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Items in the subject area " Soil > Nutrient turnover"

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Journal paper

Alves, Sandra Maria Campos; Abboud, Antonio Carlos de Souza; Ribeiro, Raul de Lucena Duarte and Almeida, Dejair Lopes de (2004) Balanço do nitrogênio e fósforo em solo com cultivo orgânico de hortaliças após a incorporação de biomassa de guandu. [Nitrogen and phosphorus balance in soil with organic cultivation of legumes after incorporation of pigeonpea biomass.] Pesquisa Agropecuária Brasileira, 39 (11), pp. 1111-1117.

Ambus, P. (2005) Relationship between nitrogen cycling and nitrous oxide emission in grass-clover pasture. Nutrient Cycling in Agroecosystems, 72, pp. 189-199.

Andersen, Mette Klindt; Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2004) Biomass production, symbiotic nitrogen fixation and inorganic N use in dual and tri-component annual intercrops. Plant and Soil, 266, pp. 273-287.

Askegaard, Margrethe; Eriksen, Jørgen and Olesen, Jørgen E. (2003) Exchangeable potassium and potassium balances in organic crop rotations on a coarse sandy soil. Soil Use and Management, 19, pp. 96-103.

Askegaard, M. and Eriksen, E. (2007) Growth of legume and nonlegume catch crops and residual-N effects in spring barley on coarse sand. J. Plant Nutrition and Soil Science, 170, pp. 733-780.

Askegaard, Margrethe (2008) Residual effect and leaching of N and K in cropping systems with clover and ryegrass catch crops on a coarse sand. Agriculture, Ecosystem and Enviroment, 123, pp. 99-108.

Askegaard, Margrethe; Olesen, Jørgen E. and Kristensen, Kristian (2005) Nitrate leaching from organic arable crop rotations: effects of location, manure and catch crop. Soil Use and Management, 21, pp. 181-188.

Askegaard, Margrethe; Olesen, Jørgen E.; Rasmussen, Ilse A. and Kristensen, Kristian (2011) Nitrate leaching from organic arable crop rotations is mostly determined by autumn field management. Agriculture, Ecosystems and Environment, 142 (3-4), pp. 149-160.

Atasay, Adem and Türemiş, Nurgül (2009) Effect of Some Nutrient Applications on Plant Properties in Organic Strawberry Production. Acta Hortuculture, 838, pp. 83-86.

Axelsen, Jørgen Aagaard; Sønderskov, Mette; Bruus-Pedersen, Marianne; Tybirk, Knud and Eriksen, Jørgen (2004) FieldEco – a multi-purpose biologically driven food web model. , , . [Completed]

Bakken, Anne Kjersti; Breland, Tor Arvid; Haraldsen, Trond K.; Aamlid, Trygve S. and Sveistrup, Tore E. (2005) Soil fertility in three cropping systems after conversion from conventional to organic farming. Acta Agriculturae Scandinavica Section B-Soil and Plant Science. [In Press]

Baldin, Bettina; Bohne, Heike and Bremer, Andrea (2003) Ökologische Baumschulwirtschaft: Konkretere Leitlinien. TASPO-Magazin (2), pp. 32-33.

Beckmann, Uta; Kolbe, Hartmut; Model, Annett and Russow, Rolf (2001) Ackerbausysteme im ökologischen Landbau unter besonderer Berücksichtigung von N-Bilanz und Effizienzkennzahlen. [Organic arable farming systems with particular consideration of nitrogen balance and parameters of efficiency.] UFZ-Bericht (14), pp. 1-138.

Berner, Alfred; Mäder, Paul; Schaub, Daniel and Ott, Martin (2004) Feldrandkompostierung - ein Problem für das Grundwasser? Umwelt Aargau (26), pp. 9-12.

Berntsen, J.; Grant, R.; Olesen, J.E.; Kristensen, I.S.; Vinther, F.P.; Mølgaard, J.P. and Petersen, B.M. (2006) Nitrate leaching from organic farming systems with rotational grass-clover and arable crops. Soil Use and Management, 22, pp. 197-208.

Berntsen, Jørgen; Petersen, B.M.; Pedersen, A. and Jensen, L.S. (2003) Simulating leaching losses following incorporation of grass and grass-clover leys. DARCOFenews (4).

Beste, Andrea (2007) Klimaschutz auf Kosten des Bodenschutzes? [Climate protection at the expense of soil conservation?] Local Land and Soil News (22/23), pp. 28-29.

Beste, Dr Andrea (2007) Klimaschutz auf Kosten des Bodens? [Protecting Climate versus Soil Quality?] Lebendige Erde (05), p. 19.

Bohne, Heike; Andrea, Bremer and Michaelis, Jan-Peter (2000) Erste Ergebnisse zur ökologischen Produktion von Gehölzen. Deutsche Baumschule, 52 (5), pp. 34-35.

Boval, Maryline; Faverial, J.; Mulciba, P.; Loranger-Merciris, G.L.M. and Sierra , J. (2013) Intensify pastures for livestock production: vermicompost use, an agro-ecological practice. [Intensifier la production animale au pâturage : le vermicompost, pratique agro-écologique.] Innovations Agronomiques, 32, pp. 83-93.

Bruun, Sander; Hansen, Trine L.; Christensen, Thomas H.; Magid, Jakob and Jensen, Lars S. (2006) Application of processed organic municipal solid waste on agricultural land - a scenario analysis. Environmantal Modeling and Assessment, 11, pp. 251-265.

Canali, S.; Trinchera, A.; Intrigliolo, F.; Pompili, L.; Nisini, L.; Mocali, S. and Torrisi, B. (2004) Effects of long term application of compost and poultry manure on soil quality of citrus orchards in Southern Italy. [.] Biology and Fertility of Soils ( 40), pp. 206-210.

Carter, Mette S. (2007) Contribution of nitrification and denitrification to N2O emissions from urine patches. Soil Biology & Biochemistry, 39, pp. 2091-2102.

Carter, Mette S.; Klumpp, Katja and Xavier, Le Roux (2006) Lack of increased availability of root-derived C may explain the low N2O emission from low N-urine patches. Nutrient Cycling in Agroecosystems, 75, pp. 91-100.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Jensen, Morten; Thomsen, Sune T.; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2012) Consequences of field N2O emissions for the environmental sustainability of plant-based biofuels produced within an organic farming system. Global Change Biology Bioenergy, 4 (4), pp. 435-452.

Carter, Mette S.; Sørensen, Peter; Petersen, Søren O.; Ma, Xiuzhi and Ambus, Per (2014) Effects of green manure storage and incorporation methods on nitrogen release and N2O emissions after soil application. Biology and Fertility of Soils, , .

Chirinda, N.; Kracher, D.; Porter, J.R.; Olesen, J.E.; Petersen, B.M.; Doltra, J.; Kiese, R. and Butterbach-Bahl, K. (2010) Simulating soil N2O and CO2 emissions from arable cropping systems using FASSET and MOBILE-DNDC. Plant and Soil, 343 (1-2), pp. 139-160.

Chirinda, N.; Olesen, J.E.; Porter, J.R. and Schjønning, P. (2010) Soil properties, crop production and greenhouse gas emissions from organic and inorganic fertilizer-based arable cropping systems. Agriculture, Ecosystems and Environment, 139, pp. 584-594.

Christensen, B.T.; Rasmussen, J.; Eriksen, J. and Hansen, E.M. (2009) Soil carbon storage and yields of spring barley following grass leys of different age. European Journal of Agronomy, 31, pp. 29-35.

Christiansen, J.S.; Thorup-Kristensen, K. and Kristensen, H.L. (2006) Root development of beetroot, sweet corn and celeriac, and soil N content after incorporation of green manure. [Rodudvikling hos rødbede, sukkermajs og rodselleri, samt jordens kvælstofindhold efter nedpløjning af grøngødning.] Journal of Horticultural Science & Biotechnology, 81 (5), pp. 831-838.

COLOMB, Bruno; Jouany, Claire and Prieur , Loic (2013) Des bilans de phosphore majoritairement négatifs pour les systèmes de grandes cultures biologiques sans élevage en Midi-Pyrénées. Quels impacts sur le phosphore biodisponible des sols et l’état de nutrition des cultures ? [Most of stockless organic farming systems in the Midi-Pyrenees region display negative field P budget. What are the impact on soil P fertility and plant P status?] Innovations Agronomiques, 32, pp. 73-82.

Dalgaard, Tommy; Olesen, Jørgen E.; Petersen, B.M.; Petersen, Søren O.; Jørgensen, Uffe; Kristensen, Troels; Hutchings, Nicholas J.; Gyldenkerne, Steen and Hermansen, J.E. (2011) Developments in greenhouse gas emissions and net energy use in Danish agriculture - How to achieve substantial CO2 reductions? Environmental Pollution, 159 (11), pp. 3193-3203.

Davari, Mohammadreza; Sharma, Shri Niwas and Mirzakhani, Mohammad (2012) THE EFFECT OF COMBINATIONS OF ORGANIC MATERIALS AND BIOFERTILISERS ON PRODUCTIVITY, GRAIN QUALITY, NUTRIENT UPTAKE AND ECONOMICS IN ORGANIC FARMING OF WHEAT. Journal of Organic Systems, 7 (2), pp. 26-35.

David, Christophe and Jeuffroy, Marie-Hélène (2009) A sequential approach for improving AZODYN crop model under conventional and low-input conditions. European Journal of Agronomy, 31 (4), pp. 177-182.

Deru, Joachim; Schilder, Henk; Schoot, Jan Rinze, van der and Eekeren, N. van (2014) Genetic differences in root mass of Lolium perenne varieties under field conditions. Euphytica, may 20, pp. 1-11.

Dierauer, Hansueli and Böhler, Daniel (2004) Bio ohne Vieh ist eine grosse Herausforderung. [Organic Agriculture without livestock is a big challenge.] Bioaktuell (2/04), pp. 16-17.

Dubois, David; Mäder, Paul; Fliessbach, Andreas and Strasser, Fredi (2003) Auswirkungen reduzierter Hofdüngergaben im Bioackerbau. [Effects of reducing farm yard manure in organic arable farming.] Bioaktuell (9/03), pp. 6-7.

El-Naggar, Ahmed; Rasmussen , Jim; de Neergaard, Andreas; El-Araby, Ahmed and Høgh-Jensen, Henning (2010) Source and temperature determine the releases of multiple amino acids from plant materials. Agronomy for Sustainable Development, 30, pp. 679-688.

Elers, Barbara (2003) Stickstoffmanagement im Ökologischen Gemüsebau. [Nitrogen-management in organic vegetable growing.] Landinfo (4/2003), pp. 74-76.

Elsgaard, Lars (2010) Dynamics of mineral nitrogen, water-soluble carbon and potential nitrification in band-steamed arable soil. Biology and Fertility of Soils.

Eriksen, J (2001) Implications of grazing by sows for nitrate leaching from grassland and the succeeding cereal crop. Grass and Forage Science, 56, pp. 317-322.

Eriksen, J (2001) Nitrate leaching and growth of cereal crops following cultivation of contrasting temporary grasslands. Journal of Agricultural Science, 136, pp. 271-281.

Eriksen, J and Askegaard, M (2000) Sulphate leaching in an organic crop rotation on sandy soil in Denmark. Agriculture, Ecosystems and Environment, 78, pp. 107-114.

Eriksen, J; Askegaard, M and Kristensen, K (1999) Nitrate leaching in an organic dairy/crop rotation as affected by organic manure type, livestock density and crop. Soil Use and Management, 15, pp. 176-182.

Eriksen, J and Kristensen, K (2001) Nutrient excretion by outdoor pigs: a case study of distribution, utilisation and potential for environmental impact. Soil Use and Management, 17, pp. 21-29.

Eriksen, J; Nielsen, M; Mortensen, JV and Schjørring, JK (2001) Redistribution of sulphur during generative growth of barley with different sulphur and nitrogen status. Plant and Soil, 230, pp. 239-246.

Eriksen, J; Petersen, SO and Sommer, SG (2002) The fate of nitrogen in outdoor pig production. Agronomie, 22 (7/8), pp. 863-867.

Eriksen, J and Thorup-Kristensen, K (2002) The effect of catch crops on sulphate leaching and availibility of S in the succeeding crop on sandy loam soil in Denmark. Agriculture, Ecosystems and Environment, 90, pp. 247-254.

Eriksen, J. (2005) Ring i trynen garanterer ikke en lav N udvaskning fra søer på græs. Nyhedsbrev fra Forskningscenter for Økologisk Jordbrug (5).

Eriksen, J. (2005) Grass cover retained by nose-ringing of outdoor sows only partially reduces the risk of N leaching. DARCOFenews (3).

Eriksen, J. (2005) Ringning af søer påvirker græsdække og potentiale for næringsstoftab. Forskningsnytt om økologisk landbruk i Norden, 4, pp. 22-23.

Eriksen, J. (2004) Efficient use of grassland nitrogen. DARCOFenews (1).

Eriksen, J. (2004) Gross sulphur mineralisation-immobilisation turnover in soil amended with plant residues. Soil Biology & Biochemistry, 37, pp. 2216-2224.

Eriksen, J. (2003) Afgræsningsmarkers eftervirkning. FØJOenyt (2).

Eriksen, J.; Askegaard, M. and Kristensen, K. (2004) Nitrate leaching from an organic dairy crop rotation: the effect of manure type, N-input and improved crop rotation. Soil Use and Management, 20, pp. 48-54.

Eriksen, J. and Hermansen, J.E. (2005) Outdoor production of slaughter pigs requires an optimized management to mitigate N pollution. DARCOFenews (3).

Eriksen, J. and Hermansen, J.E. (2005) Slagtesvin på friland kræver optimeret driftsledelse for at mindske miljøbelastningen. FØJOenyt.

Eriksen, J.; Hermansen, J.E.; Strudsholm, K. and Kristensen, K. (2006) Potential loss of nutrients from different rearing strategies for fattening pigs on pasture. Soil Use and Management, 22, pp. 256-266.

Eriksen, J. and Jensen, L.S. (2001) Soil respiration, nitrogen mineralisation and uptake in barley following cultivation of grazed grasslands. Biology and Fertility of Soils, 33, pp. 139-145.

Eriksen, J.; Olesen, J.E. and Askegaard, M. (2002) Sulphate leaching and sulphur balances of an organic crop rotation on three Danish soils. European Journal of Agronomy, 17, pp. 1-9.

Eriksen, J.; Pedersen, L. and Jørgensen, J.R. (2006) Nitrate leaching and spring wheat bread making quality following cultivation of grasslands of different composition, age and management. Agriculture, Ecosystems & Environment, 116, pp. 165-175.

Eriksen, J. and Søegaard, K. (2000) Nitrate leaching following cultivation of contrasting temporary grassland. Grassland Science in Europe, 5, pp. 577-579.

Eriksen, J.; Thorup-Kristensen, K. and Askegaard, M. (2004) Plant-availability of catch crop S following spring incorporation. Journal of Plant Nutrition and Soil Science, 167, pp. 609-615.

Eriksen, J.; Vinther, F.P. and Søegaard, K. (2004) Ældre marker med kløvergræs kan beskytte grundvandet mod nitrat. FØJOenyt (4).

Eriksen, J.P.; Vinther, F.P. and Søegaard, K. (2004) Low nitrate leaching from long-term grass-clover. DARCOFenews (3).

Eriksen, Jørgen and Høgh-Jensen, Henning (1998) Variations in the natural abundance of 15N in ryegrass/white clover shoot material as influenced by cattle grazing. Plant and Soil, 205, pp. 67-76.

Eriksen, Jørgen and Mortensen, Jørgen (1999) Soil sulphur status following long-term annual application of animal manure and mineral fertilizers. Biology and Fertility of Soils, 28, pp. 416-421.

Eriksen, J.; Studnitz, M.; Strudsholm, K.; Kongsted, A.G. and Hermansen, J.E. (2006) Effect of nose ringing and stocking rate of pregnant and lactating outdoor sows on exploratory behavior, grass cover and nutrient loss potential. Livestock Science, 104, pp. 91-102.

Eriksen, J.; Vinther, F.P. and Søegaard, K. (2004) Nitrate leaching and N2-fixation in grasslands of different composition, age and management. Journal of Agricultural Science, 142, pp. 141-151.

Esperschütz, Jürgen; Gattinger, Andreas; Mäder, Paul; Schloter, Michael and Fließbach, Andreas (2007) Response of soil microbial biomass and community structures to conventional and organic farming systems under identical crop rotations. FEMS Microbiology Ecology, 61 (1), pp. 26-37.

Fliessbach, Andreas; Schmid, Heinz and Niggli, Urs (2008) Die Vorteile des Öko-Landbaus für das Klima. Ökologie & Landbau (1/2008), pp. 17-19.

Fortune, S; Robinson, J S; Watson, C A; Philipps, L; Conway, J S and Stockdale, E A (2005) Response of organically managed grassland to available phosphorus and potassium in the soil and supplementary fertilization: field trials using grass– clover leys cut for silage. Soil use and Land Management, 21 (21), pp. 370-376.

Friedel, Jürgen K. and Scheller, Edwin (2002) Composition of hydrolysable amino acids in soil organic matter and soil microbial biomass. Soil Biology & Biochemistry, 34, pp. 315-325.

Goulding, Keith; Stockdale, Elizabeth; Fortune, Sharon and Watson, Christine (2000) Nutrient cycling on organic farms. Journal of the Royal Agricultural Society of England, 161, pp. 65-75.

Govasmark, Espen; Steen, Arvid; Bakken, Anne Kjersti; Strøm, Turid and Hansen, Sissel (2005) Factors affecting the concentration of Zn, Fe and Mn in herbage from organic farms and in relation to dietary requirements of ruminants. Acta Agriculturae Scandinavica Section B - Soil and Plant Science, 55, pp. 131-142.

Govasmark, Espen; Steen, Arvid; Bakken, Anne Kjersti; Strøm, Turid; Hansen, Sissel and Bernhoft, Aksel (2005) Copper, molybdenum and cobalt in herbage and ruminants from organic farms in Norway. Acta Agriculturae Scandinavica Section A Animal Science, 55, pp. 21-30.

Gruber, Harriet and Thamm, Uwe (2004) Entwicklung der Grundnährstoffgehalte und des pH-Wertes im Boden nach 10-jähriger Bewirtschaftung nach den Richtlinien des ökologischen Landbaus. Mitteilungen der Landesforschungsanstalt für Landwirtschaft und Fischerei Mecklenburg-Vorpommern, 33.

Gruber, Harriet; Thamm, Uwe and Michel, Volker (2004) Einfluss der ökologischen Bewirtschaftung auf die Nitratstickstoffgehalte im Boden. Mitteilungen der Landesforschungsanstalt für Landwirtschaft und Fischerei Mecklenburg-Vorpommern, 33.

Gruber, Harriet; Thamm, Uwe and Michel, Volker (2003) Effektive Nutzung des Leguminosenstickstoffs in der Fruchtfolge. [Effective use of legume Nitrogen in the crop rotation.] Ökologie & Landbau, 127 (3/2003), pp. 29-31.

Gunst, Lucie; Richner, Walter; Mäder, Paul and Mayer, Jochen (2013) DOK-Versuch: Nährstoffversorgung in Winterweizen – Wo wird es eng? Agrarforschung Schweiz, 4 (2), pp. 74-81.

Haas, Guido; Bach, Martin and Zerger, Corinna (2005) Landwirtschaftsbürtige Stickstoff- und Phosphor-Überschüsse - Nährstoffbilanzen der Landkreise Nordrhein-Westfalens. [Farming derived nitrogen and phophor surplus - nutrient balances of the districts of the state North-Rhine-Westphalia in Germany.] LÖBF-Mitteilungen (2/05), pp. 45-49.

Haas, Guido; Brand, Heike and Puente de la Vega, Mirea (2007) Nitrogen from hairy vetch (Vicia villosa Roth) as winter green manure for white cabbage in organic horticulture. Biological Agriculture and Horticulture, Vol. 25, pp. 37-53.

Haas, Guido; Wetterich, Frank and Köpke, Ulrich (2002) Nutrient cycle on organic farms: stall balance of a suckler herd and beef bulls. Nutrient Cycling in Agroecosystems, 64, pp. 225-230.

Hagel, I. (1995) Kalium-Natrium-Verhältnis in Demeter-Möhren. [On the ratio of potassium and sodium in demeter-carrots.] Lebendige Erde (2/1995), pp. 103-109.

Hammermeister, A.M.; Astatkie, T.; Jeliazkova, E.A.; Warman, P.R. and Martin, R.C. (2006) Nutrient supply from organic amendments applied to unvegetated soil, lettuce and orchardgrass. Can. J. Soil Sci., 86, pp. 21-33.

Hansen, Birgitte; Alrøe, Hugo Fjelsted and Kristensen, Erik Steen (2001) Approaches to assess the environmental impact of organic farming with particular regard to Denmark. Agriculture, Ecosystems and Environment, 83 (1-2), pp. 11-26.

Hansen, E.M.; Eriksen, J. and Vinther, F.P. (2005) High yield and low N leaching with barley as a green crop for silage after grass-clover. DARCOFenews (1).

Hansen, E.M.; Eriksen, J. and Vinther, F.P. (2005) Stor produktion af grovfoder og lav nitratudvaskning ved dyrkning af grønbyg med italiensk rajgræs efter kløvergræs. FØJOenyt, 1.

Hansen, J.P.; Eriksen, J. and Jensen, L.S. (2005) Residual nitrogen effect of a dairy crop rotation as influenced by grass ley management manure type and age. Soil Use and Management (21), pp. 278-286.

Hansen, Jacob P. and Vinther, Finn P. (2001) Spatial variability of symbiotic N2 fixation in grass-white clover pastures estimated by the 15N isotope dilution method and the natural 15N abundance method. Plant and Soil (230), pp. 257-266.

Hauggaard-Nielsen, Henrik; Ambus, Per and Jensen, Erik Steen (2003) The comparison of nitrogen use and leaching in sole cropped versus intercropped pea and barley. Nutrient Cycling in Agroecosystems, 65 (3), pp. 289-300.

Henriksen, Christian Bugge; Rasmussen, Jesper and Søgaard, Carsten (2005) Ridging in autumn as an alternative to mouldboard ploughing in a humid-temperate region. Soil & Tillage Research. [In Press]

Hiltbrunner, Jürg and Liegdens, M. (2008) Performance of winter wheat varieties in white clover living mulch. Biological Agriculture & Horticulture, 26, pp. 85-101.

Høgh-Jensen, Dr Henning and Schjoerring, Dr Jan K. (2001) Rhizodeposition of nitrogen by red clover, white clover and ryegrass leys. Soil Biology & Biochemistry, 33, pp. 439-448.

Jensen, Lars Stoumann; Pedersen, Anders; Magid, Jakob and Nielsen, Niels Erik (2006) Influence of catch crops on phosphorous and potassium availability in a depleted loamy soil. Soil Use and Management, (draft manuscript). [Unpublished]

Jensen, Lars Stoumann; Pedersen, Anders; Magid, Jakob and Nielsen, Niels Erik (2005) Catch crops have little effect on P and K availability of depleted soils. [Efterafgrøder har ringe effekt på P og K forsyningen på udpint lerjord.] DARCOFenews.

Jensen, Lars Stoumann; Pedersen, Anders; Magid, Jakob and Nielsen, Niels Erik (2005) Efterafgrøder har ringe effekt på P og K forsyningen på udpint lerjord. [Catch crops have little effect on P and K availability of depleted soils.] FØJOenyt.

Johansen, Anders; Carter, Mette S.; Jensen, Erik Steen; Hauggaard-Nielsen, Henrik and Ambus, Per (2011) Effects of digestate from anaerobic digested cattle slurry and plant materials on soil microbiota and fertility. Applied Soil Ecology, , . [Submitted]

Jørgensen, P.R.; Urup, J.; Helstrup, T.; Jensen, M.B.; Eiland, F. and Vinther, F.P. (2004) Transport and reduction of nitrate in clayey till underneath forest and arable land. Journal of Contaminant Hydrology, 73, pp. 207-226.

Kahle, Petra; Baum, Christel and Borchwardt, Monika (2004) Auswirkungen mehrjähriger ökologischer Bewirtschaftung auf ausgewählte Bodeneigenschaften, dargestellt am Beispiel des Versuchsfeldes Gülzow. Mitteilungen der Landesforschungsanstalt für Landwirtschaft und Fischerei Mecklenburg-Vorpommern, 33.

Knudsen, Marie Trydeman; Kristensen, Ib Sillebak; Berntsen, Jørgen; Petersen, Bjørn Molt and Kristensen, Erik Steen (2006) Estimated N leaching losses for organic and conventional farming in Denmark. Journal of Agricultural Science, 144 (2), pp. 135-149.

Kolbe, Hartmut (2001) Anleitung zur P-, K-, Mg- und Kalk-Düngung im ökologischen Landbau [Instructions for phophorous, potassium, magnesium and lime fertilisation in organic agriculture.]. SÖL-Berater-Rundbrief (3), pp. 3-9.

Kolbe, Hartmut (2001) Übersicht über Versuche und Entwicklungsarbeiten zur Düngung im Ökologischen Landbau in Deutschland [Chart of trials and projects on fertilization and manuring in organic agriculture in Germany]. SÖL-Berater-Rundbrief (1), pp. 27-36.

Kolbe, Hartmut; Jäckel, Ulf and Beckmann, Uta (2003) Einfluss einer 5jährigen Dauerstilllegung auf Pflanzenbestand, Bodenmerkmale und einen ökologischen Nachbau von Winter- und Sommerweizen. Schriftenreihe der Sächsischen Landesanstalt für Landwirtschaft, 8 (6), pp. 82-103.

Kolbe, Hartmut (2007) Anforderungen an die Humusbilanzierung in der Praxis des ökologischen Landbaus. [Requirements for humus balance methods using in organic farming practice.] Schriftenreihe der Sächsischen Landesanstalt für Landwirtschaft, H. 9, pp. 58-69.

Kolbe, Hartmut; Franko, Uwe; Thiel, Enrico and Ließ, Ekkehard (2013) Verfahren zur Abschätzung von Humusreproduktion und N-Umsatz im ökologischen und konventionellen Ackerbau. Schriftenreihe des Landesamtes für Umwelt, Landwirtschaft und Geologie (LfULG), D-Dresden, 1/2013, pp. 1-119.

Kolbe, Hartmut and Köhler, Brigitte (2006) Das PC-Programm BEFU, Teil Ökologischer Landbau. [The PC programme BEFU, organic farming section.] Infodienst für Beratung und Schule der Sächsischen Agrarverwaltung, 7, pp. 5-7.

Koller, Martin and Lichtenhahn, Martin (2004) Stickstoffversorgung im Freiland-Gemüsebau. [Nitrogen supply in organic field vegetable production.] Der Gemüsebau/ Le Maraîcher (3), pp. 27-31.

Kristensen, H.L. and Thorup-Kristensen, K. (2007) Effects of vertical distribution of soil inorganic nitrogen on root growth and subsequent nitrogen uptake by field vegetable crops. [Betydning af dybdefordeling af uorganisk kvælstof i jorden for rodvækst og kvælstofoptagelse hos grønsagsafgrøder.] Soil Use and Management, 23, pp. 338-347.

Kristensen, H.L. and Thorup-Kristensen, K. (2006) Deep roots of Brassica oleracea have high uptake of 15N-nitrate to 2 meters soil depth. [Submitted]

Kristensen, Hanne L.; Debosz, Kasia and McCarty, Greg W. (2003) Short-term effects of tillage on mineralization of nitrogen and carbon in soil. Soil Biology and Biochemistry, 35, pp. 979-986.

Kristensen, Hanne L. and Thorup-Kristensen, Kristian (2005) Grønkål optager nitrat fra mere end 2 meters dybde. [Curly kale takes up nitrate from more than 2 meters depth.] FØJOenyt, 4.

Kupper, Thomas and Fuchs, Jacques (2007) Compost et digestat en Suisse. [Kompost und Gärgut in der Schweiz.] Umwelt Wissen (43), p. 126.

Kupper, Thomas and Fuchs, Jacques (2007) Kompost und Gärgut in der Schweiz. [Compost et digestat en Suisse.] Umwelt Wissen (43), p. 126.

Laber, H. (2001) Organische Handelsdünger für den ökologischen Gemüsebau. [Commercial organic fertilizers for organic vegetable growing.] ÖKOmenischer Gärtnerrundbrief (1/2001), pp. 27-29.

Laber, Hermann (2003) N-Freisetzung aus organischen Handelsdüngern – Übersicht und eigene Versuchsergebnisse im ökologischen Gemüsebau. [N-Mineralisation of organic fertilizer - Review and own results in organic vegetable production]. Infodienst für Beratung und Schule der sächsischen Agrarverwaltung (4/2003), pp. 157-161.

Laberge, Guillaume; Ambus, Per; Nielsen, Henrik Hauggaard and Jensen, Erik Steen (2006) Stabilization and plant uptake of N from 15N-labelled pea residue 16.5 years after incorporation in soil. Soil Biology and Biochemistry, 38 (7), pp. 1998-2000.

Lichtenhahn, Martin and Böhler, Daniel (2006) Bodenschutz und Fruchtfolge: neue Regelung ab Anbaujahr 2006. Bioaktuell (2/06), pp. 8-11.

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Lindenthal, Thomas; Spiegel, Heide; Mazorek, Manfred; Heß, Jürgen and Freyer, Bernhard (2003) Ergebnisse von drei 40jährigen P-Dauerversuchen in Österreich: 2. Mitteilung: Auswirkungen unterschiedlicher P-Düngerformen und –mengen auf den P-Entzug und die P -Bilanzen. [Results of three long-term P-field experiments in Austria 2nd Report: Effects of different types and quantities of P-fertiliser on P-uptake and P-balances.] Die Bodenkultur, 54 (1), pp. 11-21.

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McNiel, A.M.; Eriksen, J.; Bergström, L.; Smith, K.S.; Marstorp, H.; Kirschmann, H. and Nilsson, I. (2005) Nitrogen and sulphur management: challenges for organic sources in temperate agricultural systems. Soil Use and Management, 21, pp. 82-93.

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Munkholm, Lars J. and Olesen, Jørgen E. (2004) Mekanisk jordløsning fjernede pløjesål men gav varierende effekt på udbyttet. [Subsoil loosening eliminated plough pan but had variable effect on crop yield.] FØJOenyt.

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Pedersen, Anders; Zhang, Kefeng; Thorup-Kristensen, Kristian and Jensen, Lars Stoumann (2009) Modelling diverse root density dynamics and deep nitrogen uptake. Plant and Soil, 326 (1-2), pp. 493-510.

Pedersen, Anders; Petersen, Bjørn Molt; Eriksen, Jørgen; Hansen, Søren and Jensen, Lars Stoumann (2007) A model simulation analyses of nitrate leaching – does soil organic matter pool structure or catch crop growth parameters matter most? Ecological Modelling, 205, pp. 209-220.

Petersen, B.M.; Berntsen, J.; Hansen, S. and Jensen, L.S. (2005) CN-SIM - a model for the turnover of soil organic matter. I: Long term carbon development. Soil Biology and Biochemistry, 37, pp. 359-374.

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Petersen, Søren O.; Schjønning, P.; Olesen, Jørgen E.; Christensen, S. and Christensen, B.T. (2013) Sources of nitrogen for winter wheat in organic cropping systems. Soil Science Society of America Journal, 77, pp. 155-165. [In Press]

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Rasmussen, Richard and Jokumsen, Alfred (2008) Digestibility in selected rainbow trout families and modelling of growth from the specific intake of digestible protein. Aquaculture International, 17 (2), pp. 187-197.

Raupp, Joachim (2001) Zwanzig Jahre Langzeit-Düngungsversuch. Ökologie & Landbau (2/2001), pp. 29-31.

Ricci , Marta dos Santos Freire; Oliveira, Fabio Freire de; Miranda, Simone Cordeiro de and Costa, Janaina Ribeiro (2006) Produção da cenoura e efeito na fertilidade do solo e nutrição decorrente da solarização do solo para controle da tiririca. [Carrot production and effect on soil fertility and nutrition as function of soil solarization for purple nutsedge weed control.] Bragantia, 65 (04), pp. 607-614.

Romamyà, Joan and Rovira, Pere (2007) Labile phosphorus forms in irrigated and rain-fed semiarid Mediterranean grassy crops with long-term organic and conventional farming practices. European Journal of Agronomy, 27, pp. 62-71.

Saarela, Into (2002) Phosphorus in Finnish soils in the 1900s with particular reference to the acid ammonium acetate soil test. Agricultural and Food Science in Finland, 11 (4), pp. 257-271.

Salo, Tapio; Lemola, Riitta and Esala, Martti (2007) National and regional net nitrogen balances in Finland in 1990-2005. Agricultural and Food Science, 16 (4), pp. 366-375.

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Scheller, Edwin (2002) Eiweißstoffwechsel und Bodenfruchtbarkeit. [Protein metabolism and soil fertility.] Bioland, 1/2002, pp. 12-13.

Scheller, Edwin (2001) Amino acids in dew - origin and seasonal variation. Atmospheric Environment, 35, pp. 2179-2192.

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Schjønning, P.; Thomsen, I. K.; Moldrup, P. and Christensen, B. T. (2003) Linking Soil Microbial Activity to Water- and Air-Phase Contents and Diffusivities. Soil Science Society of America Journal, 67, pp. 156-165.

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Soinne, Helena; Saarijärvi, Kirsi; Karppinen, Minna and Hartikainen, Helinä (2008) Sensitivity of soil phosphorus tests in predicting the potential risk of phosphorus loss from pasture soil. Agricultural and Food Science, 17 (3), pp. 265-277.

Stavridou, Eleftheria; Thorup-Kristensen, Kristian and Young, Scott D. (2011) Assessment of selenium mineralization and availability from catch crops. Soil Use and Management, 27 (3), pp. 305-311.

Steinshamn, Håvard; Bleken, Marina Azzaroli and Hansen, Sissel (2004) Lite nitrogentap fra mjølkegarder som baserer seg på egen fôrprodukjson. [Minor nitrogen losses from dairy farms based on feed self-sufficiency.] Forskningsnytt om økologisk landbruk i Norden, 2004 (2), pp. 3-6.

Steinshamn, Håvard; Thuen, Erling; Bleken, Marina Azzaroli; Brenøe, Ulrik Tutein; Ekerholt, Georg and Yri, Cecilie (2004) Utilization of nitrogen (N) and phosphorus (P) in an organic dairy farming system in Norway. Agriculture, Ecosystems & Environment, 104 (3), pp. 509-522.

Sørensen, Jørn Nygaard and Thorup-Kristensen, Kristian (2003) Undersowing legume crops for green manuring of lettuce. [Undersåning af bælgplanter til grøngødskning af salat.] Biological Agriculture and Horticulture, 21 (4), pp. 399-414.

Taube, Friedhelm and Pötsch, E.M. (2001) On-Farm nutrient balance assessment to improve nutrient management on organic dairy farms. Grassland Science in Europe, 6, pp. 225-234.

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Thomsen, I.K. and Sørensen, P. (2006) Interactions between soil organic matter level and soil tillage in a growing crop: N mineralization and yield response. Soil Use and Management (22), pp. 221-223.

Thomsen, I.K. and Sørensen, P. (2006) Tillage-induced N mineralization and N uptake in winter wheat on a coarse sandy loam. Soil & Tillage Research (89), pp. 58-69.

Thomsen, Ingrid Kaag and Sørensen, Peter (2004) Jordløsning i vækstsæsonen øger ikke N mineraliseringenen. FØJOenyt (4).

Thomsen, Ingrid Kaag and Sørensen, Peter (2004) Tillage in the growing season is ineffective as a tool of increased soil N mineralization. DARCOFenews (1).

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Uusitalo, Risto and Aura, Erkki (2005) A rainfall simulation study on the relationships between soil test P versus dissolved and potentially bioavailable particulate phosphorus forms in runoff. Agricultural and Food Science, 14 (4), pp. 335-345.

Uusitalo, Risto; Turtola, Eila; Grönroos, Juha; Kivistö, Juhani; Mäntylahti, Väinö; Turtola, Ari; Lemola, Riitta and Salo, Tapio (2007) Finnish trends in phosphorus balances and soil test phosphorus. Agricultural and Food Science, 16 (4), pp. 301-316.

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Vinther, F.P.; Hansen, E.M. and Olesen, J.E. (2004) Effects of plant residues on crop performance, N mineralisation and microbial activity including field CO2 and N2O fluxes in unfertilised crop rotations. Nutrient Cycling in Agroecosystems, 70, pp. 189-199.

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Berntsen, Jørgen (2004) Ingen forskel på nitratudvaskning. Økologisk Jordbrug, 2004, 316, p. 6.

Carter, Mette S. and Ambus, Per (2009) Greenhouse gas emissions from cultivation of energy crops – is it important? ICROFS news, November 2009, 4, pp. 2-3.

Carter, Mette S. and Ambus, Per (2009) Nødvendig viden om mark-emissioner for valg af biobrændsel. [Necessary knowledge on field emissions to choose between biofuels.] ICROFS nyt, October 2009, 3, pp. 5-6.

Carter, Mette S. and Chirinda, Ngonidzashe (2009) Ingen effekt af dyrkningssystem på drivhusgassen N2O. ICROFS nyt, June 2009.

Carter, Mette S. (2010) Stor forskel på energiafgrøders udledning af drivhusgas. [Large variation in greenhouse gas emissions from energy crops.] LandbrugsAvisen, 3 December 2010.

Carter, Mette S. (2010) Drivhusgas fra energi-afgrøder. [Greenhouse gas from energy crops.] Økologi & Erhverv, 5 November 2010, 466, pp. 16-17.

Carter, Mette S. (2010) Drivhusgas fra økologiske sædskifter. [Greenhouse gas from organic crop rotations.] Økologi & Erhverv, March 2010, 452, p. 16.

Carter, Mette S.; Ambus, Per; Petersen, Søren O. and Sørensen, Peter (2013) Kløvergræs ensilage og kompost som grøngødning. [Grass-clover silage and compost as green manure.] ICROFS Nyt, 15 November 2013, 4, pp. 4-5.

Christiansen, Julie S.; Kristensen, Hanne L. and Thorup-Kristensen, Kristian (2003) Rodsystemer hos rødbede, sukkermajs og knoldselleri efter grøngødning. [Root systems of beetroot, sweet corn and celleriac after green manure.] Forskningsnytt, 2003, 4, pp. 20-21.

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Eriksen, J. (2004) Udvaskning før og efter ompløjning af kløvergræs. Månedsmagasinet Mark, January 2004, 1, p. 18.

Eriksen, J. (2003) Afgræsningsmarkers eftervirkning. [Residual effect of grasslands.] Økologisk Jordbrug, 2003 (283), p. 6.

Eriksen, J.; Askegaard, M. and Søegaard, K. (2009) Kvælstofmanagement på store økologiske kvægbrug. Nyhedsbrev fra Internationalt Center for Forskning i Økologisk Jordbrug og Fødevaresystemer 2, 2009, p. 8.

Eriksen, J.; Askegaard, M. and Søegaard, K. (2009) Nitrogen management on large organic dairy farms. Newsletter from the International Centre for Research in Organic Food Systems 2, 2009, p. 2.

Hansen, E.M. (2010) Efterafgrøder i majs - hvor svært kan det være? Økologi & Erhverv, 26 February 2010.

Hansen, E.M. and Eriksen, J. (2009) Nitratudvaskning fra majs. ICROFSnyt, December 2009, pp. 3-4.

Hansen, E.M. and Eriksen, J. (2009) Nitrate leaching from silage maize. ICROFSnews, November 2009, pp. 4-5.

Hansen, E.M.; Eriksen, J. and Vinther, F.P. (2004) Øget udnyttelse af kvælstof efter ompløjning af afgræsset kløvergræs. Grøn Viden, Markbrug, November 2004.

Jensen, Erik Steen and Hauggaard-Nielsen, Henrik (2002) Understanding the role of grain legumes in the N cycling of agroecosystems. Grain Legumes, 2002, 36 (2), pp. 12-14.

Jensen, Lars Stoumann (2005) Lille effekt af fangafgrøder. [Little effect of catch crops.] Økologisk Jordbrug, October 2005 (345), p. 6.

Johansen, Anders; Hansen, Christian M. and Carter, Mette S. (2010) Restmaterialer fra bio-energiproduktion - kan de tilbageføres til marken? ICROFSnyt, March 2010, pp. 12-13.

Johansen, Anders; Stevenson, Bryan; Hauggaard-Nielsen, Henrik and Jensen, Erik Steen (2011) Effects of bioethanol residues on the functional and genetic diversity of soil microbiota. Plant and Soil, 2011, ( ), - . [Unpublished]

Kristensen, H.L. and Thorup-Kristensen, K. (2003) Olieræddike kan optage tabt nitrat fra 2,5 meters dybde. [Fodder radish takes up lost nitrate from 2.5 meters depth.] Månedsmagasinet Mark, 2003, 7, pp. 14-15.

Olesen, J.E. and Berntsen, J. (2004) Simulating crop production and nitrate leaching losses from organic arable crop production. DARCOFenews, December 2004, 4, - .

Thomsen, Ingrid Kaag (2003) Kun lille N-effekt af jordløsning i vårbyg. Landbrugsmagasinet Landsbladet, June 2003, p. 32.

Thorup-Kristensen, Kristian (2004) Om at vende chikanegræsset til egen fordel. [How to turn legally required catch crops to your own advantage.] Agrologisk, November 2004, pp. 8-10.

Thorup-Kristensen, Kristian (2003) Efterafgrøder med mange formål. Økologisk Jordbrug, 2003, 23 (285), p. 6.

Thorup-Kristensen, Kristian (2002) Grønsagssædskifte uden tilførsel af gødning. Økologisk Jordbrug, 2002, 22 (258), p. 6.

Thorup-Kristensen, Kristian (2002) Viden om rodvækst er nyttig. Økologisk Jordbrug, 2002, 22 (277), p. 14.

van Eekeren, Nick; Iepema, Goaitske and Smeding, Frans (2007) Natuurherstel in grasland door klaver en kalibemesting. [Nature recovery in grassland by means of clover and potassium fertilization.] De Levende Natuur, January 2007, pp. 27-31.

Van Gils, Bert; Willekens, Koen; Beeckman, Annelies and Delanote, Lieven (2014) Onderzoek naar niet-kerende bodembewerking en groenbemesters: resultaten veldproeven 2013. BIOpraktijk, 1 April 2014, pp. 1-3.

Van Gils, Bert; Willekens, Koen; Beeckman, Annelies and Delanote, Lieven (2013) Onderzoek naar niet-kerende bodembewerking en groenbemesters: resultaten veldproeven 2012. BIOpraktijk, 1 February 2013, pp. 1-3.

Vinther, F.P. (2004) Organisk kvælstof kan også udvaskes. [Organic nitrogen can also be leached.] Økologisk Jordbrug, November 2004 (325), p. 6.

Vinther, F.P. (2004) N-fiksering - hvor meget og hvordan? [N fixation - how much and how?] MånedsMagasinet Kvæg, January 2004, p. 19.

Vinther, F.P. (2003) Hvor bliver kvælstoffet af? [Where does the nitrogen go?] FØJOenyt, October 2003, - .

Vinther, F.P. (2003) Symbiotisk N2 fiksering i kløvergræs. [Symbiotic N2 fixation in grass-clover.] FØJOenyt, June 2003, 2, - .

Vinther, F.P. (2003) Hvor meget kvælstof henter kløvergræs fra luften? [How much nitrogen is fixed by grass-clover?] Aktuel Økologi fra Familielandbrugets Økologikonsulenter, 2003 (6), pp. 4-5.

Vinther, F.P. (2003) Kvælstof forsvinder. [Nitrogen disappeas.] Økologisk Jordbrug, 2003 (297), p. 8.

Vinther, F.P. (2003) Kvælstof fra luften. [Nitrogen from the air.] Økologisk Jordbrug, 2003 (288), p. 6.

Vinther, F.P.; Hansen, E.M. and Eriksen, J. (2005) Leaching of organic nitrogen and carbon after cultivating grass-clover pastures. DARCOFenews, June 2005, 1, - .

Vinther, F.P.; Hansen, E.M. and Olesen, J.E. (2003) Grass-clover and catch crops - How does grass-clover and catch crops affect crop performance and soil microbiology in unfertilised organic crop rotations? DARCOFenews, September 2003, 3.

Working paper

Canali, Dr. Stefano; Riva, Dr. Francesco and Dell'Orco, Dr. Silvia (2005) Criteri di ammissibilità e di utilizzo degli effluenti di allevamento e dei concimi ed ammendanti derivati in agricoltura biologica. [Utilisation and admissibility criteria of animal effluents and derived fertilisers and soil conditioners in organic farming.] MINISTERO DELLE POLITICHE AGRICOLE E FORESTALI Progetto di ricerca La zootecnia biologica in Italia: situazioni attuali e prospettive. Tipologie d'imprese, trasformazioni necessarie e possibili, incentivi pubblici e di mercato, domanda di ricerca., no. 8, CRA - Istituto Sperimentale per la Nutrizione delle Piante.

Gerlach, Florian (2003) Übersicht über Homepages und Dokumentdatenbanken der "Arbeitsgruppe Versuchsansteller im Ökologischen Landbau" im "Verband der Landwirtschaftskammern e.V." (VLK) und ihrer Mitglieder. [Chart of websites and online-databases containing reports by the "working group of experimental stations for organic agriculture" and its members.] Working paper. [Unpublished]

Köhler, Brigitte and Kolbe, Hartmut (2008) PC-Programm BEFU, Teil Ökologischer Landbau: Verfahren zur Grunddüngung, Nährstoff- und Humusbilanzierung. Working paper, FB Pflanzliche Erzeugung, Sächsische Landesanstalt für Landwirtschaft, D-Leipzig. [Completed]

Kolbe, Hartmut (2008) Wirkung organischer Düngemittel auf Ertrag und Qualität von Kartoffeln im Ökologischen Landbau. [Effects of organic fertilizers on yield and quality of potatoes.] Working paper, FB Pflanzliche Erzeugung, Sächsische Landesanstalt für Landwirtschaft, Leipzig. [Unpublished]

Kolbe, Hartmut (2008) Einfache Verfahren zur Berechnung der Humusbilanz für konventionelle und ökologische Anbaubedingungen. Working paper, FB Pflanzliche Erzeugung, Sächsische Landesanstalt für Landwirtschaft, D-Leipzig. [Completed]

Kolbe, Hartmut (2008) Verfahren zur Berechnung der N-Bindung von Leguminosen im Ökolandbau. Working paper, FB Pflanzliche Erzeugung, Sächsische Landesanstalt für Landwirtschaft, D-Leipzig. [Completed]

Kolbe, Hartmut (2007) Berücksichtigung von Standort- und Bewirtschaftungsfaktoren bei der Verbesserung von Verfahren der Grunddüngung und Humusbilanzierung unterschiedlich intensiver Anbausysteme. [Improvement of basic fertilization and humus balance methods subject to site and cultivation factors on farming systems of diffenrent intensity.] Working paper, Fachbereich Pflanzliche Erzeugung, Sächsische Landesanstalt für Landwirtschaft, DE-Leipzig. [Completed]

Kolbe, Hartmut and Köhler, Brigitte (2008) Formen der Nährstoffbilanzierung in Praxis und Beratung des Ökologischen Landbaus. Working paper, Abteilung Pflanzliche Erzeugung, Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie (LfULG), D-Leipzig. [Completed]

Laber, Hermann (2013) Zügiger Umsatz bei vielen der im Brutversuch getesteten organischen Handelsdünger. [Speedy nitrogen mineralisation of organic fertilisers tested in an incubation experiment.] Versuche im deutschen Gartenbau.

Mathiesen, Camilla and Tersbøl, Michael (2011) Supply Chain Workshop afdækkede både muligheder og barrierer. Working paper.

Nielsen, Professor N.E.; Thomsen, Senior Scientist I.K. and Berntsen, Senior Scientist J. (2004) Do nutrient uptakes and grain yields differ between spring barley varieties grown for organic farming as mono-crop and in mixture: Characteristics of spring barley varieties for organic farming. Working paper. [Unpublished]

Pedersen, Anders; Zhang, Kefeng; Thorup-Kristensen, Kristian and Jensen, Lars S. (2007) Simulating root density dynamics and nitrogen uptake in the soil profile – A simple approach. Working paper. [Unpublished]

Conference paper, poster, etc.

Bender, Franz; Conen, Franz; Neftel, Albrecht; Oberholzer, Hans-Rudolf; Olbrecht, Luise; Jocher, Markus; Rollog, Mark and van der Heijden, Marcel G.A (2013) Der Einfluss symbiotischer Bodenpilze auf den Stickstoffzyklus. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

ADEOLUWA, DR OLUGBENGA O. and ADEOYE, PROFESSOR GIDEON O. (2008) Potential of Oil Palm Empty Fruit Bunch (EFB) as Fertilizer in Oil Palm (Elaeis guineensis L Jacq.) Nurseries. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Andres, C.; NGuessan Diby, L.; Kouamé Hgaza, V. and Frossard, E. (2012) Fertilization of Dioscorea rotundata with poultry manure: effects on nutrient dynamics and nutrient use efficiencies. Poster at: SGPW-Tagung "Energieeffiziente Pflanzenproduktion", Forschungsanstalt Agroscope ART Reckenholz-Tänikon, CH-Reckenholz, 23. März 2012. [Completed]

Andres, C.; NGuessan Diby, L.; Kouamé Hgaza, V. and Frossard, E. (2012) Fertilization of Dioscorea rotundata with poultry manure: effects on nutrient dynamics and nutrient use efficiencies. Awarded poster presentation. Poster at: Symposium of the Zurich-Basel Plant Science Center: "Understanding Plant Phenotypes", ETH Zurich, Switzerland, November 4, 2011. [Completed]

Andres, Christian (2013) Fertilization of Dioscorea rotundata with poultry manure: effects on nutrient dynamics and yield formation. Paper at: Tropentag (oral presentation at award ceremony of Hans H. Ruthenberg Award for Graduates), Stuttgart-Hohenheim, Germany, September 17-19, 2013. [Completed]

Arcand, M M; Lynch, D H; Voroney, R P and van Straaten, P (2006) Improving green manure quality with phosphate rocks in Ontario Canada. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 283-287.

Askegaard, Margrethe; Rasmussen, Ilse A. and Olesen, Jørgen E. (2004) Resultater med efterafgrøder i økologiske forsøg – hvordan kan disse resultater udnyttes på økologiske og konventionelle bedrifter. Speech at: Planteproduktion 2004, Herning, 13-14 Januar.

Askegaard, Senior scientist Margrethe and Eriksen, Senior scientist Jørgen (2008) Legume catch crops for reducing N leaching and substituting animal manure. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Bachinger, J. and Stein-Bachinger, K. (2000) Organic Farming on large farms with special reference to Eastern Germany. In: Wilson, M. J. and Maliszewska-Kordybach, B. (Eds.) Soil Quality, Sustainable Agriculture and Environmental Security in Central and Eastern Europe, Kluwer Academic Publishers, Dordrecht, 69, NATO Science Partnership Sub-Series 2: Environmental Security continued within NATO Science Series IV: Earth and Environmental Sciences, pp. 125-138.

Bachinger, Dr. Johann; Stein-Bachinger, Dr. Karin and Fuchs, Sarah (2006) Ecological and agronomic evaluation of crop rotations in organic farming systems. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Baddeley, J. A.; Döring, Thomas F.; Hatch, David; Marshall, Athole; Pearce, Bruce; Roderick, S; Stobart, Ron; Storkey, Jonathan; Watson, C.A. and Wolfe, Martin (2010) Using legume-based mixtures to enhance the nitrogen use efficiency and economic viability of cropping systems. In: Crighton, K and Audsley, R. (Eds.) Proceedings of the SAC/SEPA Conference, pp. 178-182.

Baldin, Bettina and Bohne, Heike (2002) Anpassung von Kulturmaßnahmen an Bodeneigenschaften zur Vermeidung von Nitrateinträgen ins Grundwasser bei einer ökologisch wirtschaftenden Baumschule. Paper at: 39. Gartenbauwissenschaftliche Tagung, Braunschweig, 27.2.-1.3.2002.

Baldin, Bettina and Bohne, Heike (2001) Einfluß von Standort, Standjahr und verschiedener Kulturmaßnahmen auf den Mineralstickstoffgehalt des Bodens ökologisch wirtschaftender Baumschulen. Paper at: 38. Gartenbauwissenschaftliche Tagung, Osnabrück, 28.02. - 02.03.2002.

Ball, B C (2006) Nitrous oxide emissions from organic farming: the importance of well-timed ley cultivation. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 317-320.

Benoit, M.; Garnier, J.; Billen, G.; Mercier, B. and Azougui, A. (2013) Nitrogen leaching from organic agriculture and conventional crop rotations (France). In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 45-46.

Berner, Alfred; Frei, Robert; Dierauer, Hans-Ulrich; Vogelgsang, Susanne and Mäder, Paul (2005) EFFECTS OF REDUCED TILLAGE, FERTILISATION AND BIODYNAMIC PREPARATIONS ON CROP YIELD, WEED INFESTATION AND THE OCCURRENCE OF TOXIGENIC FUSARIA. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

Beste, Dr. Andrea (2005) Bodenqualität als Grundlage für Produktqualität im ökologischen Lanbdau. [Soil quality - a precondition for food quality in organic farming.] In: Einsiedel, SIGÖL, Roland (Ed.) XXXI Fortbildungskurs der Interessensgemeinschaft Ökologischer Landbau e.V. "Boden, Pflanze, Tier, Vermarktung", Heft 15/2005, pp. 15-26.

Bilen, Emre; Özsoy, Nazire; Nazik Bayram, Ceren Ayşe; Ünal, Mehmet; Kaya, Seçkin; Duman, İbrahim; Aksoy, Uygun and Al-Bitar, Lina (2011) Effect of vetch and broccoli in four-year rotation of organic cucurbitaceous and solanaceous vegetables under Mediterranean conditions. Paper at: V Balkan Symposium on Vegetables and Potatoes, Tiran, Albania, 9 - 12 October 2011. [Completed]

Bleken, Ass. prof Marina Azzaroli; Krogstad, Prof. Tore; Speetjens, Koen and Heim, Ass. pref. Michael (2008) Use of a mixture of biotite- and apatite-rich rock powder in a soil with inherent low soil fertility. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Böhm, Herwart (2007) Auswirkungen einer Weißklee-Untersaat in Winterraps auf den Ertrag der Folgekultur Weizen. [Effect of a white clover underseed in oil seed rape on yield of the following crop wheat.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23. März 2007.

Bosshard, Christine; Sorensen, Peter; Frossard, Emmanuel; Mayer, Jochen; Mäder, Paul; Nanzer, Simone and Oberson, Astrid (2009) Stickstoffausnutzungseffizienz von 15N-markierter Schafsgülle und 15N-markiertem Mineraldünger in biologisch und konventionell bewirtschafteten Anbausystemen. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Brito, L Miguel; Reis, Mário; Mourão, Isabel and Coutinho, João (2014) Evaluation of invasive Acacia species compost as alternative horticultural organic substrates. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 3, Thuenen Report, no. 20, pp. 929-932.

Brito, L Miguel; Sampaio, Áurea; Pinto, Rui; Mourão, Isabel and Coutinho, João (2014) Effects of soil, root mycorrhization, organic and phosphate fertilization, in organic lettuce production. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 3, Thuenen Report, no. 20, pp. 925-928.

Brock, Christopher; Hoyer, Uta; Leithold, Prof.Dr. Günter and Hülsbergen, Prof.Dr. Kurt-Jürgen (2009) Ergebnisse der Anwendung einer neuen Humusbilanzmethode in Dauerfeldversuchen. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Brock, Christopher and Leithold, Prof. Dr. Günter (2008) The Impact of Site and Management Factors on Humus Dynamics in Long-term Field Experiments. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Brock, Christopher; Leithold, Prof.Dr. Günter and Schulz, Franz (2009) Entwicklung der Humusgehalte in Abhängigkeit von Fruchtart/Anbausystem in einem Dauerfeldversuch. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Brock, Dipl.geogr. Christopher and Leithold, Prof.Dr. Günter (2006) Balancing soil organic matter in organic agriculture - a theoretical approach. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Bugge Henriksen, Christian (2000) Er kamme et alternativ til pløjning? Speech at: Det Kgl. Danske Landhusholdningsselskabs Akademiråds efterårsseminar, Foulum, Denmark, November 8. 2000.

Cabilovski, dipl ing Ranko; Manojlovic, Prof Maja; Bogdanovic, Prof Darinka and Bavec, Prof Martina (2008) Economic aspects of the application of different organic materials as N-sources in organic production of lettuce. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Cagas, Bohumir and Machac, Radek (2002) The effect of grasses grown for seed in mixture with legumes on the incidence of weeds and soil nitrogen content. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 53-54.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Thomsen, Sune T.; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2011) Field emissions of N2O during biomass production may affect the sustainability of agro-biofuels. Speech at: Sixth International Symposium on Non-CO2 Greenhouse gases (NCGG-6), Amsterdam, The Netherlands, 2-4 November 2011. [Submitted]

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Heiske, Stefan; Thomsen, Sune T.; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2011) Greenhouse gas emissions from cultivation of energy crops may affect the sustainability of biofuels. Speech at: Risø Energy Conference, Roskilde, Denmark, 10-12 May 2011. [Completed]

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Johansen, Anders and Ambus, Per (2009) Consequences of agro-biofuel production for greenhouse gas emissions. In: NJF Report, Vol. 5, No 3, NJF General Secretariat, Stockholm, Sweden, pp. 34-35.

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Thomsen, Sune T.; Heiske, Stefan; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2010) Udledning af drivhusgas ved dyrkning af energiafgrøder - har det nogen betydning? [Emission of greenhouse gases during the cultivation of energy crops – does it make a difference?] Speech at: Seminar om bioenergi i økologisk landbrug, Middelfart, Denmark, 7 December 2010. [Completed]

Carter, Mette S.; Hauggaard-Nielsen, Henrik; Thomsen, Sune T.; Heiske, Stefan; Jensen, Morten; Schmidt, Jens Ejbye; Johansen, Anders and Ambus, Per (2010) Relating N2O emissions from energy crops to the avoided fossil fuel-derived CO2 – a study on bioethanol and biogas produced from organically managed maize, rye, vetch and grass-clover. Speech at: GHG Europe Workshop on Bioenergy, Dublin, Ireland, 27-29 October 2010. [Completed]

Carter, Mette S.; Sørensen, Peter; Petersen, Søren O. and Ambus, Per (2013) Effects of green manure storage and incorporation methods on greenhouse gas fluxes and N mineralization after soil application. Poster at: Greenhouse Gas Management in European Land Use Systems, Antwerp, 16-18 September 2013.

Carter, Mette S.; Sørensen, Peter; Petersen, Søren O. and Ambus, Per (2013) Nitrogen mineralization and greenhouse gas emissions after soil incorporation of ensiled and composted grass-clover as green manure. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 41-42.

Chirinda, Mr Ngonidzashe and Olesen, Professor Jørgen, E. (2008) Effects of organic matter input on soil microbial properties and crop yields in conventional and organic cropping systems. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Christian Bugge, Henriksen (2000) Kamme - et alternativ til pløjning? In: P. Dam, Hans (Ed.) Tidsskrift for Landøkonomi, Det Kgl. Danske Landhusholdningsselskab, 187 (4), pp. 311-314.

Ciavatta, C.; Gioacchini, P. and Montecchio, D. (2008) Can Organic Farming Contribute to Carbon Sequestration? A Survey in a Pear Orchard in Emilia-Romagna Region, Italy. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Cicek, Harun and Entz, Martin (2014) GRAZING GREEN MANURES TO OPTIMIZE NITROGEN SUPPLY ON THE CANADIAN PRAIRIES. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 1, Thuenen Report, no. 20, pp. 101-104.

Cornish, P. S. (2007) Phosphorus Management on ‘Extensive' Organic Farms with Infertile Soils. Paper at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

Cornish, Peter and Obersen, Astrid (2008) New Approaches to Phosphorus Regulation and Management. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Cuijpers, Ir. W.J.M.; van der Burgt, Ir. G.J.H.M. and Voogt, Dr. W. (2008) Nitrogen balances in Dutch organic greenhouse production. In: Conference proceedings.

David, C.; Jeuffroy, M.H. and Meynard, J.M. (2005) Nitrogen management of organic winter wheat Decision-making through model-based explorations. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

Deuker, Arno; Möller, Kurt and Leithold, Günter (2005) Vergleich der pflanzenbaulichen Systemwirkungen vergorener und unvergorener Wirtschaftsdünger und Vergärung von pflanzlichen Koppelprodukten in einem Betriebssystem der ökologischen Landwirtschaft mit Viehhaltung. [Comparison of system effects from fermented and unfermented organic fertilizers and fermentation of vegetal by-products on plant production in an organic farming system with husbandry.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Devakumar, N.; Subha, S.; Rao, G.G.E. and ImranKhan, J. (2014) Studies on Soil fertility, Cow urine and Panchagavya levels on Growth and Yield of Maize. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 2, Thuenen Report, no. 20, pp. 627-630.

Donnelly, E; Robertson, J and Robinson, D (2006) Potential uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agrculture. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 289-290.

Döring, Thomas F.; Baddeley, J. A.; Brown, RJ; Collins, R; Crowley, Oliver; Cuttle, Steve; McCalman, Heather; Pearce, Bruce; Roderick, Stephen; Stobart, Ron; Storkey, Jonathan; Watson, Christine; Wolfe, Martin and Jones, H E (2012) Legume based plant mixtures for delivery of multiple ecosystem services: An overview of benefits. In: McCracken, K (Ed.) Agriculture and the Environment IX, Valuing Ecosystems: Policy, Economic and Management Interactions, pp. 150-155.

Dreymann, Sonja; Loges, Ralf and Taube, Friedhelm (2005) Schnittgutabfuhr oder Gründüngung? Auswirkung der Kleegras-Nutzung auf Nitrat im Sickerwasser und Folgefrüchte. [Forage use or green manure? Impact of grass/clover management on nitrate in the leachate and succeeding crops.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Driouech, Noureddin; Abou Fayad, Fady; Ghanem, Ala'a and Al-Bitar, Lina (2008) Agronomic performance of annual self-reseeding legumes and their self-establishment potential in the Apulia region of Italy. In: Neuhoff, Daniel; Halberg, Niels; Alfodi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse.A.; Hermansen, John; Vaarst, Mette; Lueck, Loran; Caporali, Fabio; Hogh Jensen, Henning; Migliorini, Paola and Willer, Helga (Eds.) Cultivating the future based on science: Proceeding of the second conference of the international society of organic agriculture research (ISOFAR), ISOFAR, Organic crop production (1), pp. 396-399.

Duman, İbrahim; Kaya, Seçkin; Düzyaman, Eftal; Aksoy, Uygun; Albitar, Lina; Nazik, Ceren Ayşe; Bilen, Emre; Unal, Mehmet and Özsoy, Nazire (2013) ORGANİK ÜRETİMDE FİĞ (Vicia sativa) İLE YAPILAN YEŞİL GÜBRELEMENİN BAZI SEBZE TÜRLERİNİN VERİMİNE VE TOPRAK ÖZELLİKLERİNE ETKİSİ. [EFFECTS OF GREEN MANURING WITH VETCH (Vicia sativa) ON YIELD OF SOME VEGETABLE SPECIES AND SOIL PROPERTIES.] Paper at: 5. Organik Tarım Sempozyumu, Samsun, 25-27 Eylül 2013.

Eriksen, J ; Askegaard, M and Søegaard, K (2008) Productivity and N-leaching in organic dairy grass-arable crop rotations. In: Grassland Science in Europe, 13, pp. 556-558.

Eriksen, J ; Askegaard, M ; Søegaard, K and Hansen, E M (2008) Planteproduktion og miljø på store økologiske kvægbrug. In: Sammendrag af indlæg, pp. 333-334.

Eriksen, J (2001) Effects of timing of sulfur application and nitrogen fertilization on yield and quality of barley. In: Book of abstracts from COST Action 829 meeting Sulfur-Nitrogen Interactions in Plants.

Eriksen, J (2001) Eftervirkning af kløvergræs. In: Bilag til Efterårskonference 2001, p. 64.

Eriksen, J and Sørensen, P (2002) Eftervirkning af afgræsningsmarker og husdyrgødning. In: Intern DJF rapport, DJF, 157, pp. 25-30.

Eriksen, J and Thorup-Kristensen, K (2002) The effect of catch crops on sulphate leaching and availability of S in the succeeding crop. In: Book of abstracts, p. 98.

Eriksen, J. (2006) Management af kvælstof i grovfodersædskiftet. In: Kongresbilag, p. 108.

Eriksen, J. (2006) Miljøeffekter af trynering og græsmarksstyring. In: Kongresbilag, pp. 152-153.

Eriksen, J. (2004) Hvordan undgås svovlmangel i økologiske sædskifter. In: Månedsmagasinet Mark (1), p. 1.

Eriksen, J. (2002) Svovl til husdyrgødet vårbyg og forfrugtseffekt af græsmarker. In: Bilag til Gødningsseminar 2002.

Eriksen, J. (2001) Organic manures as sources of fertiliser sulphur. In: International Fertiliser Society Proceedings, 505, pp. 1-19.

Eriksen, J.; Askegaard, M. and Søegaard, K. (2009) Productivity and N-leaching in organic dairy grass-arable crop rotations. In: NJF Report 5 (2), p. 29.

Eriksen, J. and Hansen, E.M. (2006) N-management in grass-arable crop rotations. In: Sammendrag af Indlæg, pp. 469-470.

Eriksen, J.; Hansen, E.M. and Christensen, B.T. (2005) Tilførslen af organisk stof og jordens aktuelle udbyttepotentiale. In: Sammendrag af indlæg, pp. 230-231.

Eriksen, J.; Søegaard, K. and Askegaard, M. (2009) Kløvergræs - management bestemmer udbyttet i din mark. In: Sammendrag af indlæg, pp. 274-275.

Eriksen, J.; Søegaard, K.; Askegaard, M.; Hansen, E.M. and Rasmussen, J. (2010) Forage legume impact on soil fertility and N balance. In: NJF report 6 (3), pp. 61-65.

Eriksen, J. and Vinther, F.P. (2004) Nitrate leaching and N2-fixation in grasslands of different composition, age and management. In: Hatch, D.J.; Chadwick, D.R.; Jarvis, S.C. and Roker, J.A. (Eds.) Controlling nitrogen flows and losses, Wageningen Academic Publishers, The Netherlands, pp. 434-436.

Eriksen, J.; Mortensen, T. and Søegaard, K. (2013) Multispecies grasslands for crop productivity and carbon storage. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 39-40.

Fine, P.; Roded, L.; Cohen, S.; Shapira, N.; Adler, U.; Or, N.; Ben-Yephet, Y.; Reuven, M. and Oka, Y. (2007) Reduction of Soil-Borne Plant Pathogens Using Lime and Ammonia Evolved from Broiler Litter. Paper at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

Fischer, Meike; Raupp, Joachim; Oltmanns, Meike and Römheld, Volker (2005) Mikronährstoffversorgung in einem Langzeitversuch mit Stallmist- und mineralischer Düngung; pflanzenbauliche Konsequenzen für den Ökologischen Landbau. [Micronutrient status in a long-term experiment with farmyard manure and inorganic fertilization; agronomic consequences for organic farming.] In: Mitt. Ges. Pflanzenbauwiss., 17, pp. 385-386.

Fliessbach, Andreas; Hany, Roland; Rentsch, Daniel; Frei, Robert and Eyhorn, Frank (2000) DOC trail: soil organic matter quality and soil aggregate stability in organic and conventional soils. In: Alföldi, Thomas; Lockeretz, W. and Niggli, Urs (Eds.) Proceedings 13th International IFOAM Scientific Conference, vdf Hochschulverlag, Zürich, Switzerland.

Fliessbach, Andreas and Mäder, Paul (2000) DOC trial: diversity and metabolic effiency of microbial communities in organic and conventional soils. In: Alföldi, Thomas; Lockeretz, W. and Niggli, Urs (Eds.) Proceedings 13th International IFOAM Scientific Conference, vdf Hochschulverlag, Zürich, Switzerland.

Friedel, Dr. Jürgen K.; Farthofer, Renate; Pietsch, Gabriele and Freyer, Prof. Dr. Bernhard (2003) Auswirkungen unterschiedlich genutzter Luzernebestände auf labile Bodenstickstoff-Fraktionen im pannonischen Klimaraum Ostösterreichs. [Effects on unstable soil nitrogen fractions of differently used alfalfa crops in the pannonic region of Eastern Austria.] In: Mitt. Dtsch. Bodenkundl. Gesellsch., 102 (1), pp. 279-280.

Frøseth, Randi Berland; Hansen, Sissel and Bakken, Anne Kjersti (2008) Contribution of N from frequently chopped green manure to a succeeding crop of barley. In: Neuhoff, Daniel; Halberg, Niels; Alföldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A; Hermansen, John; Vaarst, Mette; Lueck, Lorna; Caporali, Fabio; Jensen, Henning Hogh; Migliorini, Paola and Willer, Helga (Eds.) Cultivating the future based on science, International Society of Organic Agriculture Research (ISOFAR), University of Bonn, 1, pp. 388-391.

Fuchs, Jacques G.; Mayer, Jochen and Berner, Alfred (2009) Einfluss von Kompost und Gärgut auf Pflanzenwachstum und –gesundheit: Potential und Grenzen. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

GIRARD, T.; SIMON, S.; CORROYER, N.; FAURIEL, J. and BUSSI, C. (2002) Soil nitrogen in an organic apple orchard. In: Proceedings, Canadian Organic Growers, Ottawa, Canada, p. 52.

Gjettermann, Birgitte; Styczen, Merete; Hansen, Søren; Borggaard, Ole K. and Hansen, Hans C.B. (2004) Sorption of dissolved organic C and P to agricultural top- and subsoil. In: Bruun, Bente (Ed.) ATV Jord og Grundvand. Vintermøde om jord- og grundvandsforurerening., ATV-fonden for jord og grundvand. DTU., pp. 435-444.

Goodlass, G; Hatch, D J; Shepherd, M A; King, J A; Cuttle, S P; Roderick, S and Briggs, S (2006) Making the most of soil nitrogen. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 269-271.

Govasmark, Espen; Steen, Arvid; Bakken, Anne Kjersti; Strøm, Turid and Hansen, Sissel (2005) Mikromineralinnhold i jord og planter - mikromineralforsyning til drøvtyggere i økologisk landbruk. In: Grønn kunnskap, Planteforsk Apelsvoll forskningssenter, 8 (2), pp. 155-162.

Grieb, Beatrice and Becker, Konstantin (2010) Stickstoffdynamik unter Winterraps nach Kleegrasumbruch im Vergleich zur Nachfrucht Winterweizen im ökologischen Landbau. In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften Band 22 „Koexistenz Grüne Gentechnik", Verlag Liddy Halm, 22, pp. 221-222.

Gruber, H.; Thamm, U. and Michel, V. (2003) Nitrat-Stickstoff-Gehalte im Boden in einer 6-feldrigen Fruchtfolge. [Contents of nitrate-nitrogen in soils with a six-year crop rotation.] In: Freyer, Bernhard (Ed.) Ökologischer Landbau der Zukunft, Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, Universität für Bodenkultur - Institut für ökologischen Landbau, Wien, pp. 467-468.

Gruber, Harriet (2009) Entwicklung der Grundnährstoffgehalte in einem schwach lehmigen Sandboden Nordostdeutschlands nach langjähriger ökologischer Bewirtschaftung. In: Märländer, B.; Christen , O.; Kenter, C. and Düker, A. (Eds.) Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Liddy Halm, Göttingen, pp. 1-269.

Gruber, Dr. Harriet and Thamm, Uwe (2005) Entwicklung der Grundnährstoffgehalte in einem schwach lehmigen Sandboden Nordostdeutschlands nach langjähriger ökologischer Bewirtschaftung. [The development of contents of phosphorus, potassium and magnesium in organic farming on sandy soil in north-east germany.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Häberle, Annette; Pekrun, Carola; Claupein, Wilhelm; Köhler, Stefan; Stahr, Karl and Römheld, Volker (2003) Untersuchungen zur Wirkung einer einmalig variierten Bodenbearbeitung auf Ertragsbildung, Verunkrautung und Nitratauswaschung unter den Produktionsbedingungen des Ökologischen Landbaus. [Studies on short-time effects of tillage on yields, weeds and nitrate leaching in organic farming.] In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Verlag Günter Heimbach, Stuttgart, 14, pp. 286-287.

Häberle, Annette; Pekrun, Carola; Claupein, Wilhelm; Prade, Christoph; Thierfelder, Christian and Stahr, Karl (2004) Untersuchungen zu den Auswirkungen im ersten und zweiten Folgejahr nach einer einmalig variierten Bodenbearbeitung auf Ertragsbildung, Verunkrautung und Nitratauswaschung unter ökologischen Produktionsbedingungen. [Studies of varied tillage in one year on yields, weeds and nitrate leaching in the two consecutive years in organic farming.] In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Verlag Günter Heimbach, Stuttgart, 16, pp. 69-70.

Hampl, Ulrich (2003) Projekt Ökologische Bodenbewirtschaftung (PÖB) - Ergebnisse nach sieben Jahren [Project Ecological Soil Management - results after seven years]. In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau: Ökologischer Landbau der Zukunft, Universität für Bodenkultur - Institut für ökologischen Landbau, Wien, pp. 455-456.

Hansen, Sissel and Bakken, Anne Kjersti (2008) A discussion of norms for S supply in organic farming based on content in forage and ruminant performance in Norway. In: Neuhoff, Daniel (Ed.) Proceedings of the 2nd scientific conference of the international society of organic agriculture research (ISOFAR), Livestock, socio-economic and cross disciplinary research in organic agriculture, ISOFAR, II, pp. 160-163.

Hansen, E.M.; Eriksen, J. and Vinther, F.P. (2005) Nitrogen leaching following cultivation of grazed grass-clover on coarse sandy soil. Poster at: N-workshop, Maastricht, 23-26 Sept. 2005.

Hatch, David; Shepherd, Mark and Hatley, Damian (2002) Understanding soil nitrogen supply: organic matter quality and quantity. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 145-146.

Hege, U.; Fischer, A. and Offenberger, K. (2003) Nährstoffsalden und Nitratgehalte des Sickerwassers in ökologisch und konventionell bewirtschafteter Ackerflächen. [Nutrient balance and nitrate content in leakage water of arable soils managed organically and conventionally.] In: Institut für Agrarökologie, Ökologischen Landbau und Bodenschutz (Ed.) Tagungsband: Forschung für den ökologischen Landbau in Bayern, Bayerische Landesanstalt für Landwirtschaft (LfL), Freising, Schriftenreihe der Bayerischen Landesanstalt für Landwirtschaft, no. 3/03, pp. 7-13.

Henriksen, C.B. and Rasmussen, J. (2002) Kamdyrkning (drill) – et økologisk alternativ. In: Cottis, T. (Ed.) Den nasjonale kongres for økologisk jordbrug, Rapport nr. 3 - 2002, Høgskolen i Hedmark, pp. 61-68.

Hillebrecht, Björn; Brock, Christopher and Leithold, Prof.Dr. Günter (2009) Saisonale Dynamik von Ct und Nt im Boden unter Winterweizen mit nachfolgender Zwischenfrucht. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Hoffmann, Heide and Hübner, W. (2001) Ökologischer Landbau auf leichten Böden - Ertragsparameter und Bodenfruchtbarkeitskennziffern aus dem Demonstrationsversuch Ackerbausysteme in Blumberg bei Berlin. [Organic Agriculture on sandy ground.] In: Reents, H.-J. (Ed.) Beiträge zur 6. Wissenschaftstagung zum Ökologischen Landbau, Dr. Köster Verlag Berlin, pp. 171-174.

Hoyer, Dipl.Ing.agr. Uta; Brock, Dipl.geogr. Christopher; Hülsbergen, Prof.Dr. Kurt-Jürgen and Leithold, Prof.Dr. Günter (2006) Development of a method for balancing soil organic matter in organic agriculture for practical application. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Jaakkola, Antti and Yli-Halla, Markku (2008) Thirty years of growing cereal without P and K fertilization. In: NJF Report, Nordic Association of Agricultural Scientists, 4 (2), pp. 17-19.

Jacobsen, O.H.; Vinther, F.P.; Schjønning, P.; Hansen, E.M. and Eriksen, J. (2004) Økologisk jordbrug til beskyttelse af grundvand. [Organic farming for protection of the ground water quality.] Speech at: Økologi-kongres 2004, Odense Kongrescenter, 16-17. November 2004.

Jahan, Instructor Mohsen; Koocheki, Professor Alireza; Nassiri Mahallati, Associated Prof. Mehdi and Dehghanipur, Instructor Forugh (2008) The effects of different cattle manure levels and branch management methods on organic production of Cucurbita pepo L. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Jensen, Lars Stoumann (2010) Mere optimal udnyttelse af forfor og kalium i såvel jord som alternative gødningskilder. Keynote presentation at: Økologi Kongres, Vingsted Centret, Vejle, 23-24 november, 2011.

Johansen, A.; Hauggaard-Nielsen, H.; Ambus, P.; Dalgaard, T.; Jørgensen, U.; Nielsen, A.M.; Nielsen, L.H.; Olesen, J.E.; Roepstorff, A.; Skytte, K.; Smith, J.E.; Thomsen, A.B.; Carter, M.S. and Jensen, E.S. (2008) Production of biomass and bioenergy in organic agriculture and its consequences for soil quality, environment, biodiversity and socio-economy. [Produktion af biomasse og bioenergi i økologisk jordbrug og konsekvenserne for jord kvalitet, miljø, biodiversitet og socio-økonomi.] Poster at: ALTERNET Workshop: Interlinkage between Biodiversity and Bioenergy, Edinburgh, 20th - 21st October 2008.

Johansen, A.; Pommeresche, R.; Riley, H. and Løes, A.-K. (2013) Effects of applying anaerobically digested slurry on soil available organic C and microbiota. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 125-126.

Johansen, Anders; Carter, Mette S.; Hauggaard-Nielsen, Henrik; Nielsen, Henrik Bangsø; Andreasen, Christian; Hansen, Christian M.; Carlsgart, Josefine and Roepstorff, Allan (2010) Biogasproduktionens effekter på parasitter, ukrudtsfrø og jordens mikroorganismer. Speech at: Seminar om bioenergi i økologisk landbrug, Middelfart, Danmark, 7 December 2010.

Johansen , Anders; Carter, Mette S.; Hauggaard-Nielsen, Henrik and Løes, Anne-Kristin (2011) Waste materials from biogas production - effects on soil fertility and climate. Speech at: Program Hushållningssällskapens kompetensdagar och HIR-konferens, Jönköping , 26-27 September 2011.

Jonczyk, Krzysztof and Igras, Janusz (2005) Mineralstickstoffgehalt im Boden in einem ökologischen und einem konventionellen Pflanzenproduktionssystem. [Soil mineral nitrogen contents in an ecological and a conventional crop production system.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Jost, Britta; Schmidtke, Knut and Rauber, Rolf (2007) Kalkulation der N2-Fixierleistung und der N-Flächenbilanz beim Anbau von Leguminosen im ökologischen Landbau. [Calculation of the symbiotic N2 fixation and N balance of organically grown legumes.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Kasper, Martina; Freyer, Bernhard; Amon, Barbara; Hülsbergen, Kurt-Jürgen; Schmid, Harald and Friedel, Juergen K. (2011) Modellberechnungen für treibhausgasrelevante Emissionen und Senken in landwirtschaftlichen Betrieben Ost-Österreichs. [Databasis for greenhousegas emissions and sinks in agricultural systems in Eastern Austria.] Poster at:

Katroschan, K. and Stützel, H. (2008) Mineralization of lupine seed meal and seedlings used as N fertilizer in organic vegetable production. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Keller, Martina; Oberson, Astrid; Frossard, Emmanuel; Mäder, Paul; Mayer, Jochen and Bünemann, Else K. (2009) Einfluss unterschiedlicher Bewirtschaftungsverfahren auf P-Formen und P-Dynamik im Boden. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Köhler, Brigitte and Kolbe, Dr. Hartmut (2006) Formen der Stickstoffbilanzierung für die Praxis des Ökologischen Landbaus. [Nitrogen budget types for organic farming practice.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Hartmut (2010) Einfluss mineralischer K-Düngung und organischer Düngemittel auf Nährstoffversorgung, Ertrag und Qualität von Kartoffeln im ökologischen Landbau. Paper at: 32. Kartoffel-Tagung, Arbeitsgemeinschaft Kartoffelforschung e. V., Detmold, 19. - 20. 05. 2010. [Unpublished]

Kolbe, Hartmut (2010) Phosphor und Kalium im ökologischen Landbau - aktuelle Probleme, Herausforderungen, Düngungsstrategien. Paper at: Tagung des Verbandes der Landwirtschaftskammern und des Bundesarbeitskreises Düngung, Würzburg, 20. - 21. 04. 2010. [Unpublished]

Kolbe, Hartmut (2007) Einfache Methode zur standortangepassten Humusbilanzierung von Ackerland unterschiedlicher Anbauintensität. [Site adjusted humus balance method for use in arable farming systems of different intensity.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Kolbe, Hartmut (2007) Ökologischer Ackerbau: Fruchtfolgegestaltung und Düngungsplanung. Speech at: Fortbildungsveranstaltung für die Landwirtschaftsverwaltung. Landesanstalt für Entwicklung der Landwirtschaft, Schwäbisch Gmünd, 03.07.2007.

Kolbe, Hartmut (2007) Tastversuch zur Kompensation negativer Ertragsreaktionen nach Strohdüngung im (viehlosen) Getreideanbau. [Field trial for negative yield effect compensation after straw application in (stockless) cereal production systems.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Kolbe, Hartmut (2007) Zwischenfrüchte als Vorfrüchte für die Ertrags- und Qualitätsleistung von Mais und Kartoffeln. Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Kolbe, Dr. Hartmut (2007) Site adjusted organic matter balance method for use in arable farming systems. Speech at: Practical Solutions for Managing Optimum C and N Content in Agricultural Soils IV, Praha, June 20-22, 2007.

Kolbe, Dr. Hartmut (2006) Dauerversuch zur komplexen Prüfung ökologischer Anbau- und Düngungsverfahren – Anbaujahr 2005 Triticale –. [Log-term field trial for complex examination of organic cultivation and fertilization systems – Cultivation of triticale in 2005 –.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut (2006) Dauerversuch zur P- und K-Grunddüngung im Ökologischen Landbau. [Long-term field trial for P and K basic fertilization in organic farming.] Poster at: Vortragsveranstaltung mit Feldtag "Forschung zum ökologischen Landbau in Sachsen", Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut (2006) Eignung verschiedener Zwischenfrüchte als Vorfrüchte für die Ertrags- und Qualitätsleistung von Mais und Kartoffeln. [Effects of different preceding catch crops on yield and quality of maize and potato.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut (2006) Einfluss organischer und mineralischer Düngemittel auf Ertrag und Verfärbungsneigung von Kartoffeln. [Effects of organic and mineral fertilizer application on yield and discolouration of potato tubers.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut (2006) Leistungsfähigkeit von Merkmalen der Bodenfruchtbarkeit für das Nährstoffmanagement des ökologischen Landbaus. [Reliability of soil fertility properties for use in nutrient management of organic farming.] Paper at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut (2006) Methode zur standortangepassten Humusbilanzierung von Ackerland im Integrierten und Ökologischen Landbau. [Site adjusted humus balance method for use in integrated and organic farming arable land.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut (2006) Vergleich von Bilanzierungsmethoden für Humus an Hand langjähriger Dauerversuche. [Comparison of humus balance methods using long-term field trials.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut and Heinig, Caterina (2006) Das Öko-Feld der Versuchsstation Roda (Sachsen). [The organic field of the experimental station of Roda (Saxony).] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut and Heinig, Caterina (2006) Entwicklung der Erträge und der Nährstoffversorgung auf dem Ökofeld in Roda (Sachsen). [Development of yields and soil nutrients on the organic experiment field in Roda (Saxony).] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut and Köhler, Brigitte (2006) Entwicklung von kalibrierten Schnellmethoden zur Berechnung der symbiotischen N-Bindung von Futterleguminosen. [Development of calibrated rapid methods for symbiotic N fixation of fodder lugumes.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut and Köhler, Brigitte (2006) PC-Programm BEFU, Teil Ökologischer Landbau. [PC programme BEFU, organic farming section.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Dr. Hartmut; Rikabi, Dr. Fouad; Albert, Dr. Erhard; Ernst, Dr. Hartmut and Förster, Frank (2006) Ansätze zur PK-Düngungsberatung im ökologischen Landbau. [Basic approaches of P and K fertilizer requirements in organic farming.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Kolbe, Hartmut (2013) VDLUFA-Standpunkt Humusbilanzierung: Ökologischer Landbau. Paper at: AK Humusbilanzierung des VDLUFA, Hochschule Weihenstephan-Triesdorf, Fakultät Land- und Ernährungswirtschaft, Freising, 11. Dezember 2013. [Unpublished]

Kolbe, Hartmut (2013) Besonderheiten der Phosphorversorgung von ökologisch bewirtschafteten Standorten im Erzgebirge und Vogtland. Paper at: Gäa- und Naturland-Ackerbauseminar, Agrargenossenschaft Oberes Vogtland, D-Adorf, 18.10.2012. [Completed]

Kolbe, Hartmut (2013) Grundnährstoffversorgung ökologisch wirtschaftender Betriebe mit Kali, Phosphor und Schwefel auf leichten Standorten. Paper at: Naturland Ackerbautagung Nord-Ost, Heimvolkshochschule am Seddiner See, 21.02.2013. [Completed]

Kolbe, Hartmut (2009) Standarduntersuchungsprogramm zu Bodenfruchtbarkeit und Nährstoffmanagement. Paper at: Tagung des Arbeitskreises Versuchsansteller im Ökologischen Landbau, D-Uelzen, 23. - 24. 06. 2009. [Completed]

Kolbe, Hartmut (2007) Vorstellung eines Kalkulationsprogramms für den ökologischen Landbau: Grunddüngung, Humusbilanzierung, legume N-Bindung, Nährstoffbilanzierung. Paper at: Naturland Ackerbautagung, D-Bernburg, 22.02.2007. [Completed]

Kramer, Eckart; Borchert, Anne Friederike; Gebbers, Robin; Schirrmann, Michael; Trautz, Dieter; Olfs, Hans-Werner and Schatz, Thomas (2011) Praktische Erfahrungen bei der Erfassung der räumlichen Variabilität von pH-Werten in Ackerböden durch das Online-Messverfahren Veris MSP. [Practical experiences for the evaluation of pH spatial variability in agricultural soils using the Veris MSP online sensor.] Poster at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 16.-18. März 2011.

Kristensen, Erik Steen and Knudsen, Marie Trydemann (2004) Impact of Organic farming on aquatic environment. Speech at: Lednice, Lednice, 1st July 2004.

Kristensen, Hanne L. and Thorup-Kristensen, Kristian (2006) Roots below one meters depth are important for nitrate uptake by annual crops. [Rødder under 1 meters dybde er vigtige for et-årige afgrøders optagelse af nitrat.] In: CD-rom "The American Society of Agronomy - Crop Science Society of America - Soil Science Society of America International Annual Meetings, November 12-16, 2006, Indianapolis, USA. No. 205-9., CD-rom "The American Society of Agronomy - Crop Science Society of America - Soil Science Society of America International Annual Meetings, November 12-16, 2006, Indianapolis, USA., no. Abstract No. 205-9..

Kristensen, Hanne L. and Thorup-Kristensen, Kristian (2006) Roots below one meters depth are important for nitrate uptake by annual crops. [Rødder under 1 meters dybde er vigtige for et-årige afgrøders optagelse af nitrat.] Speech at: The American Society of Agronomy - Crop Science Society of America - Soil Science Society of America International Annual Meetings, Indianapolis, USA, November 12-16, 2006.

Küstermann, B; Hofmann, M; Schmid, H; Gerl, G; Kainz, M and Hülsbergen, K J (2005) Langzeituntersuchung der Kohlenstoff- und Stickstoffkreisläufe eines intensiven ökologischen Betriebssystems – am Beispiel des Versuchsgutes Scheyern. [Long-time analysis of carbon and nitrogen cycles of an intensive organic farm-ing system – at example of the experimental farm Scheyern.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Landgraf, Anke and Schmidtke, Knut (2013) Quantifizierung der N-Rhizodeposition von Leguminosen in einem Gefäßversuch unter Gewächshaus- und Freilandbedingungen. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Larsen, Thomas; Krogh, Paul Henning; Magid, Jakob; Hobbie, Erik and Marc, Ventura (2006) Collembola’s role in regulating mass fluxes in soil and the effects of contrasting life histories. Poster at: The 5th International Conference on Applications of Stable Isotope Techniques to Ecological Studies, Belfast, 13-18 August 2006. [Unpublished]

Law-Ogbomo, K.E.; Osaigbovo, A.U. and Ogedegbe, S. (2014) Soil nutrient status and okra pod yield as influenced by plant density and cattle dung manure application. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 4, Thuenen Report, no. 20, pp. 827-830.

Leisen, Edmund (2013) Veränderung von Mineralstoffgehalten in Böden und Pflanzen von Öko-Milchviehbetrieben in den letzten 14 bis 15 Jahren. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Li, Dr. Zhifang; Sabahi, Hossein; Schulz, Dr. Rudolf and Müller, Prof. Dr. Torsten (2009) Inkubationsversuche zum Einfluss von Sorte und Textur auf den Umsatz von Lupinenkörnerschroten im Boden bei unterschiedlichen Temperaturen. Poster at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Linder, Janne (2005) Kväveeffektivitet i ekologisk odling-slutsatser från gårdsstatistik. [Nitrogen efficiency in organic farming-conclusions from farm statistics.] In: Ekologiskt lantbruk konferens 22-23 november 2005. Ultuna, Uppsala. Sammanfattningar av föredrag och postrar. SLU. Centrum för uthålligt lantbruk., pp. 84-87.

Loges, Ralf; Ingwersen, Kathrin; Kaske, Axel and Taube, Friedhelm (2000) Methodological aspects of determining nitrogen fixation of different forage legumes. [Methodische Aspekte zur Bestimmung der symbiontischen N2-Fixierungsleistung verschiedener Futterleguminosen.] In: Alföldi, Thomas; Lockeretz, William and Niggli, Urs (Eds.) Proceedings 13th International IFOAM Scientific Conference, IFOAM 2000 - The World Grows Organic, vdf Hochschulverlag AG an der ETH Zürich, -92.

Loges, Ralf; Ingwersen, Kathrin and Taube, Friedhelm (2001) Methodische Aspekte zur Bestimmung der symbiontischen N2-Fixierungsleistung von Leguminosen. [Methodological aspects of determining nitrogen fixation of different forage legumes.] In: 45. Jahrestagung vom 23. bis 25. August 2001 in Gumpenstein. Kurzfassungen der Referate und Poster, Arbeitsgemeinschaft für Grünland und Futterbau in der Gesellschaft für Pflanzenbauwissenschaften, Wissenschaftlicher Fachverlag: Giessen, pp. 29-32.

Loges, Ralf; Kaske, A.; Ingwersen, K. and Taube, F. (2000) Yield, forage quality, residue nitrogen and nitrogen fixation of different forage legumes. [Ertrag, Futterqualität, Stickstoff der Ernterückstände sowie N-Fixierung verschiedener Futterleguminosen.] In: Alföldi, Thomas; Lockeretz, William and Niggli, Urs (Eds.) IFOAM 2000 - The World Grows Organic - Proceedings of the 13th International IFOAM Scientific Conference, vdf Hochschulverlag AG an der ETH Zürich, -83.

Loges, Ralf; Kaske, A. and Taube, F. (1999) Dinitrogen fixation and residue nitrogen of different managed legumes and nitrogen uptake of subsequent winter wheat [N2-Fixierung und residualer Stickstoff verschiedener Futterleguminosen sowie N-Aufnahme der Folgefrucht Winterweizen.]. In: Olesen, J.E.; Eltun, R.; Gooding, M.J.; Jensen, E.S. and Köpke, U. (Eds.) Designing and testing crop rotations for organic farming, DARCOF Report, no. 1, pp. 181-190.

Loges, Ralf; Kornher, Alois and Taube, Friedhelm (1998) Ertrag, Futterqualität und N2-Fixierungsleistung von Rotklee und Rotklee/Gras. [Yield, forage quality and nitrogen fixation of red clover and red clover/ grass.] In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, Gesellschaft für Pflanzenbauwissenschaften, Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, pp. 139-142.

Loges, Ralf; Kornher, Alois and Taube, Friedhelm (1997) Methodische Aspekte zur N2-Fixierung von Acker-Kleegras-Systemen. [Methodological aspects of determining nitrogen fixation in clover based cropping systems.] In: Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, pp. 180-183.

Loges, Ralf; Mauscherning, Inken and Taube, Friedhelm (2008) Autumn sown catch crop understoreys as strategy to reduce nitrate leaching in winter cereals. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Loges, Ralf and Taube, Friedhelm (2002) Methodological aspects of determination of biological N-fixation of different forage legumes [Methodische Aspekte der Bestimmung der biologischen N-Fixierung verschiedener Futterleguminosen]. In: Helgadóttir, A. and Dalmannsdóttir, S. (Eds.) Proceedings of the kick-off meeting, Solsona, Spain. Quality legume-based forage systems for contrasting environments., Reykjavík: Agricultural Reserach Institute, pp. 101-104.

Loges, Ralf; Taube, Friedhelm and Kornher, Alois (1997) Ertrag, N-Fixierungsleistung sowie Ernterückstände verschiedener Rotklee- und Rotkleegrasbestände. [Yield, forage quality and residue nitrogen of red clover and red clover/grass-mixtures.] In: Köpke, Ulrich and Eisele, Jons A. (Eds.) Beiträge zur 4. Wissenschaftstagung zum Ökologischen Landbau, Verlag Dr. Köster, Berlin, pp. 265-271.

Luxhøi, Jesper; Brøgger, Morten; Knudsen, Inge M.B.; Poulsen, Pernille H.B.; Møller, Jacob; Jensen, Birgit; Jensen, Dan F. and Magid, Jakob (2006) Functional Compost. In: The ORBIT 2006 Conference Proceedings publication.

Mäder, Paul; Berner, Alfred and Niggli, Urs (2009) Erhöhte Bodenfruchtbarkeit durch reduzierte Bodenbearbeitung im Langzeitversuch Frick. In: Tagungsband der BGS Jahrestagung 2009 - Bodenbiologie, Bodenkundliche Gesellschaft der Schweiz, p. 17.

Majidi, Ariel; Shade, Jessica; Leach, Allison and Galloway, James (2014) FARMING PRACTICE EFFECTS ON NITROGEN FOOTPRINTS. In: Rahmann, G. and Aksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 4, Thuenen Report, no. 20, pp. 1131-1134.

Malhi, Sukhdev S.; Brandt, Stewart A.; Zentner, R. P.; Knight, Diane J.; Gill, Kabal S.; Sahota, Tarlok S. and Schoenau, J. J. (2008) Management Strategies and Practices for Preventing Nutrient Deficiencies in Organic Crop Production. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Marchetti, Rosa; Casadei, Nerio; Marino, Antonio and Sghedoni, Lidia (2008) Inorganic nitrogen in soil green manured with biocidal crops. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Marchetti, Rosa; Lazzeri, Luca; Malaguti, Lorena; Orsi, Anna and Ponzoni, Gilda (2008) Potentially mineralizable nitrogen is soils green manured with biocidal crops. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Mayer, Jochen; Buegger, Franz; Jensen, Erik Steen; Schloter, Michael and Heß, Jürgen (2003) Einflüsse der Rhizodeposition von Körnerleguminosen auf den Umsatz ihrer Residuen im Boden. [Rhizodeposition effects of grain legumes on the turnover of its crop residues.] In: Freyer, Bernhard (Ed.) Ökologischer Landbau der Zukunft, Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, pp. 5-8.

Mayer, Jochen; Koeppe, Petra and Dubois, Ana (2011) Umsatz von Kompost N in einer biologischen Modellfruchtfolge Ein Vergleich direkter und indirekter 15N Tracermethoden. [Turnover of compost N in an organic model crop rotation - A comparison of direct and indirect tracer methods.] Paper at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 16.-18. März 2011.

Möller, Kurt (2003) Einfluss der Zugabe von Rohphosphat in den Biogasfermenter auf die Düngewirkung fermentierter Rindergülle [Influence of adding phosphate to the biogas fermenter on the fertilization effect of fermented liquid cattle manure]. In: Freyer, Bernd (Ed.) Ökologischer Landbau der Zukunft; Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, Universität für Bodenkultur Wien, Institut für organischen Landbau, pp. 519-520.

Möller, Kurt (2003) POSTER Einfluss der Zugabe von Rohphosphat in den Biogasfermenter auf die Düngewirkung fermentierter Rindergülle. [Influence of adding phosphate to the biogas fermenter on the fertilization effect of fermented liquid cattle manure.] Poster at: 7. Wissenschaftstagung zum Ökologischen Landbau "Ökologischer Landbau der Zukunft", Wien, 24.-26. Februar 2003. [Unpublished]

Müller, Torsten; Riehle, Judith; Schlegel, Isabel; Li, Zhifang; von Schenck zu Schweinsberg - Mickan, Mario; Sabahi, Hossein and Schulz, Rudolf (2007) Leguminosenkörnerschrote und andere vegetabile Dünger im Ökologischen Gemüsebau. [Legume seed meals and other plant based fertilisers in organic vegetable pro-duction.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Müller, Dr. Torsten; Magid, Dr. Jakob; Jensen, Dr. Lars Stoumann; Nielsen, Dr. Niels Erik and Thorup-Kristensen, Dr. Kristian (2002) Catch Crops in Organic Farming Systems without Livestock Husbandry - Model Simulations. In: Kheoruenromme, Dr. Irb (Ed.) Conference Transactions, International Union of Soil Science, 830.1-830.9.

Müller, Dr. Torsten and Thorup-Kristensen, Dr. Kristian (2002) Total N difference method and 15N isotope dilution methode - A comparative study on N-fixation. In: Mitteilgn. Dtsch. Bodenkundl. Gesellsch.,, 98, pp. 23-24.

Myrbeck, Åsa (2005) Harvning - inte bara en ogräsfråga. [Harrowing - not only for controlling weeds.] In: Ekologiskt lantbruk konferens 22-23 november 2005. Ultuna, Uppsala. Sammanfattningar av föredrag och postrar. SLU. Centrum för uthålligt lantbruk., Federativ tryckeri AB. [Unpublished]

Nielsen, Dr. Kai Lønne and Thorup-Kristensen, Dr. Kristian (2001) Root Growth and Nitrogen Utilization of a Leek Crop and an Undersown Catch Crop. In: Horst, Dr. W.J. (Ed.) Plant Nutrition - Food security and sustainability of agro-ecosystems through basic and applied research, Kluwer Academic Publishers, pp. 1010-1011.

Oberholzer, H.R.; Mäder, Paul and Fliessbach, Andreas (2000) DOC-trail: 20 years of organic and conventional farming affect soil microbial properties. In: Alföldi, Thomas; Lockeretz, W. and Niggli, Urs (Eds.) Proceedings 13th International IFOAM Scientific Conference, p. 14.

Olesen, J.E. and Petersen, B.M. (2004) Do we pay proper attention to the subsoil C turnover? In: Rasmussen, K.; Elberling, B. and Jepsen, M.R. (Eds.) Impacts of changes in land use and management on carbon stocks and turnover in the tropics, Geographical Institute, University of Copenhagen, p. 20.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse A. (2006) Kløvergræs som omdrejningspunkt. [Grass-clover as the key issue.] In: Sammendrag af indlæg Plantekongres 2006, Danmarks JordbrugsForskning and Dansk Landbrugsrådgivning, pp. 218-219.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse A. (2005) Learning from a long-term crop rotation experiment. In: NJF Report, Nordic Association of Agricultural Scientists (NJF), 1 (1), pp. 91-94.

Olesen, Jørgen E. and Askegaard, Margrethe (2011) Økologiske planteavlssædskifter – jordfrugtbarhed og miljø. In: Plantekongres 2011: Sammendrag af indlæg, Aarhus Universitet, Videncentret for Landbrug, pp. 112-114.

Owen, D; LeBlanc, S and Fillmore, S A E (2006) Short-term effect of soil disturbance by mechanical weeding on plant available nutrients in an organic vs conventional rotations experiment. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 301-305.

Owen, Ms. Josée; LeBlanc, Mr. Serge and Fillmore, Ms. Sherry (2008) Season-long supply of plant-available nutrients from compost and fertiliser in a long term organic vs. conventional snap bean rotations experiment. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Owen, Ms. Josée; Lynch, Dr. Derek and Fillmore, Ms. Sherry (2008) Changes in light fraction soil organic matter and in organic carbon and nitrogen in compost amended soils. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Owens, Katie and Watson, Christine (2002) Nutrient budgeting for trace elements: Examples from Scottish organic farms. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 147-148.

Ozyazıcı, Gulen; Ozdemir, Osman and Ozyazıcı, Mehmet Arif (2010) Organik Kivi Üretiminde Toprak Düzenleyicilerin ve Organik Materyallerin Verim ve Bazı Meyve Özellikleri Üzerine Etkileri. [The Effects of Organic Materials and Soil Regulators In Organic Kiwifruit Production On Yield and Some Fruit Properties.] Poster at: Türkiye IV. Organik Tarım Sempozyumu, Erzurum, 28 Haziran-1 Temmuz 2010.

Palmer, M.; Cooper, J.M; Fließbach, A.; Melville, J.; Turnbull, C.; Shotton, P. and Leifert, C. (2007) N released from organic amendments is affected by soil management history. Paper at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

Pappa, V A; Rees, R M and Watson, C A (2006) Nitrogen transfer between clover and wheat in an intercropping experiment. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 291-295.

Paulsen, Hans Marten; Schochow, Martin and Behrendt, Andrea (2007) N-Bedarf und N-Effizienz von Mischfruchtanbausystemen mit Ölpflanzen im ökologischen Landbau. [N-demand and N-efficiency of mixed cropping systems with oil crops in organic farming.] Paper at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Paulsen, Hans Marten (2011) Bodenfruchtbarkeit im biologischen Landbau nach Hans-Peter Rusch. [Soil fertility in organic farming systems according to Hans-Peter Rusch.] In: Zusammenfassung der Tagungsbeiträge BIO AUSTRIA Bauerntage 2011, Bio Austria, A-Linz, pp. 11-12.

Pedersen, Anders (2005) If modelling modelling with Daisy. Speech at: 14th N WORKSHOP “N management in agrosystems in relation to the Water Framework Directive”, Maastricht, The Netherlands, 24-26 October 2005.

Pedersen, Anders; Stoumann Jensen, Lars and Thorup-Kristensen, Kristian (2005) A model analysis on nitrate leaching under different soil and climate conditions and use of catch crops. Poster at: at 14th N WORKSHOP “N management in agrosystems in relation to the Water Framework Directive”, Maastricht, The Netherlands, 24-26 October 2005,. [Unpublished]

Pedersen, Anders; Zhang, Kefeng; Jensen, Lars Stoumann and Thorup-Kristensen, Kristian (2007) Simulating Root Density Dynamics and Nitrogen Uptake – Can a Simple Approach be Sufficient? In: 37th Annual Biological Systems Simulation Conference, Program and Abstract, USDA-ARS, pp. 11-12.

Penfold, Mr. Chris and McNeill, Dr. Ann (2008) Agronomic options for the management of phosphorus in Australian rain-fed organic broadacre farming systems. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Pepin, Steeve; Dorais, Martine; Gruyer, Nicolas and Ménard, Claudine (2008) Changes in mineral content and CO2 release from organic greenhouse soils incubated under two different temperatures and moisture conditions. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Petersen, Anders; Bruun, Sander; Jensen, Dr. Lars Stoumann and Hansen, Dr. Søren (2001) Simulating Soil Organic Matter Transformations with the New Implementation of the Daisy Model. In: Recous, Dr. S. (Ed.) Conference Transactions, INRA.

Petersen, B.M. and Berntsen, J. (2002) Omsætning i jordpuljen på forskellige bedriftstyper. Speech at: Kvælstofbalancer på landbrugsbedriften - status og perspektiv, Foulum, Denmark, 24-04-2002.

Petersen, B.M. and Berntsen, J. (2001) Using C-Tool to simulate soil carbon and radiocarbon development. In: COST 627. Carbon storage in European Grasslands. Danish Institute of Agricultual Sciences, Research Centre Foulum. Book of Abstracts, DIAS.

Petersen, Søren O. (2011) Nitrous oxide emissions from arable soil: Effects of crop rotation, tillage and manure management. Keynote presentation at: ASA Meetings, San Antonio,TX, 16-19 October 2011.

Pietsch, Gabriele; Hrbek, Regina; Schmutzer, Gerd and Friedel, Jürgen K. (2007) Bewirtschaftungsfreie Zeitfenster für den Naturschutz - Auswirkung auf die N2-Fixierleistung von Luzernebeständen. [Periods without soil management for nature conservation – effects on nitrogen fixation of Lucerne crops.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Pietsch, Gabriele; Starz, Walter; Friedel, Jürgen K. and Freyer, Bernhard (2007) Luzerne-Sortenvergleich im Trockengebiet Ostösterreichs. [Comparison of lucerne varieties under dry site conditions in Eastern Austria.] Poster at: Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23.03.2007.

Pinxterhuis, Ina; Boer, H. de; Eekeren, N. van and Stienezen, M.W.J. (2013) Integrating maize and triticale in grass/clover based dairy systems: examining yields and autumn soil nitrate levels. In: Proceedings of the New Zealand Grassland Association, 75, pp. 251-256.

Pommeresche, Reidun and Meisingset, Erling L. (2005) Meitemarkens rolle i omdanning av planterester. [The earthworm's contribution in decomposition of plant residues.] In: Grønn kunnskap, Planteforsk (Norwegian Institute of Crop Research), 9 (3), pp. 129-138.

Rasche, Frank; Widmer, Franco; Mäder, Paul; Gattinger, Andreas and Fliessbach, Andreas (2003) Vergleich von Methoden zur Ermittlung der mikrobiellen Diversität in Böden des DOK-Versuches. In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum ökologischen Landbau: Ökologischer Landbau der Zukunft. Wien, 24.-26. Februar 2003, Universität für Bodenkultur, Wien - Institut für Ökologischen Landbau, p. 447.

Rasmussen, J ; Eriksen, J ; Jensen, E S and Høgh-Jensen, H (2008) In field N transfer, build-up, and leaching in ryegrass-clover mixtures. In: Grassland Science in Europe, 13, pp. 559-561.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2003) Konsekvenser af at nedsætte input af næringsstoffer på bedriften. Speech at: Konventionel husdyrgødning i det økologiske sædskifte, Den økologiske Landbrugsskole, Kalø, 25. sept. 2003.

Rasmussen, J.; Søegaard, K. and Eriksen, J. (2010) Biomass production and N2-fixation in seven grass-legume mixtures. Paper at: NJF Seminar 432, Hvanneryri, Iceland, 20-22 June.

Rasmussen, Jesper; Helgadóttir, Á.; Frankow-Lindberg, B.; Loges, R. and Eriksen, J. (2010) The contribution of grass and clover root turnover to N leaching. In: Schnyder, H. (Ed.) Grassland Science in Europe 15, pp. 1028-1030.

Rasmussen, Jim and Høgh-Jensen, Henning (2004) Origin and composition of Dissolved Organic C and N from grass-clover mixtures. Poster at: Cost Action 627 - Carbon Storage in European grasslands, Ghent, Belgium, June 3-6 2004. [Unpublished]

Rasouli, Mrs. Shabnam; Azizi, Prof. Pirouz; Forghani, Dr. Akbar and Asghar Zade, Dr. Ahmad (2008) Comparison of effect of zinc-enriched pod of Phaseolus vulgaris and inner rice husk composts with zinc sulphate and zinc 14% chelate on zinc availability in maize plant in a calcareous soil. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Raubuch, Markus; Terhoeven-Urselmans, Thomas and Scheller, Edwin (2005) Suspension aus Biogasanlagen: Qualität und Wirkung auf den Ertrag. [Biogas suspension: quality and effect on yield.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Raupp, J.; Oltmanns, M.; Jarosch, A.-M. and Neumann, E. (2009) Ertrag und Wurzelkolonisation mit arbuskulären Mykorrhiza- Pilzen von organisch oder mineralisch gedüngtem Weizen auf trockenem, sandigen Boden. [Yield and arbuscular mycorrhiza fungal root colonization of organically or minerally fertilized wheat grown on a dry, sandy soil.] Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Raupp, Joachim and Oltmanns, Meike (2006) What will long-term experiments deliver? Key results of 12 experiments on different continents. In: Aspects of Applied Biology, Assoc. Applied Biologists, 79, pp. 89-92.

Raupp, Joachim and Oltmanns, Meike (2003) Unterschiedlich aktive C-Pools im Boden: Corg, POS, CO2. 2. Vergleich der Parameter und Methoden zur Beurteilung der Bewirtschaftung. In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau, Universität für Bodenkultur, Wien - Institut für ökologischen Landbau, pp. 13-16.

Raupp, Dr Joachim (2005) Stickstoffmineralisation von Stallmist, Ackerbohnenschrot, Luzernegrünmehl und Rizinusschrot unter kontrollierten Bedingungen im Brutversuch. [Nitrogen mineralisation of farmyard manure, faba bean meal, alfalfa meal and castor meal under controlled conditions in incubation tests.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Raupp, Dr Joachim (2001) Kann man bei der Nährstoffbilanzierung im ökologischen Anbau mit den üblichen Faustzahlen rechnen? Paper at: 44. Jahrestagung der Gesellschaft für Pflanzenbauwissenschaften, Bonn, 27.-29. Sep. 2001.

Raupp, Dr Joachim (1999) Lichtangebot und Bodentemperatur in Winterroggen unterschiedlicher Bestandesdichte und deren Konsequenzen für die Stickstoffmineralisation. In: Hoffmann, PD Dr. H. and Müller, Dr. S. (Eds.) Beiträge zur 5. Wissenschaftstagung zum Ökologischen Landbau, pp. 217-223.

Raupp, Dr Joachim and Oltmanns, Meike (2006) Reducing nitrogen and potassium losses during farmyard manure composting by improving composting techniques. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Raupp, Dr Joachim and Oltmanns, Meike (2002) Fractions of particulate organic matter in soils depending upon farmyard manure and mineral fertilization. In: Proceedings 14th IFOAM Organic World Congress, p. 25.

Rayns, Francis W; Harlock, Simon and Turner, Rebecca J (2002) Fertility building strategies during the conversion period – assessment of performance in a stockless field vegetable rotation. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 125-128.

Rees, Dr Robert; Baddeley, Dr John; Bingham, Dr Ian and Watson, Dr Christine (2006) Nitrogen uptake by spring barley grown with red and white clover. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Riesinger, Paul and Herzon, Irina (2014) High variability of symbiotic nitrogen fixation in farming conditions. In: Rahmann, G. and Oksoy, U. (Eds.) Building Organic Bridges, Johann Heinrich von Thünen-Institut, Braunschweig, Germany, 1, Thuenen Report, no. 20, pp. 239-242.

Ringe, Dr. Horst; Liess, Ekkehard; Franko, Dr. Uwe and Kolbe, Dr. Hartmut (2006) Erstellung und Prüfung von Verfahren zur Abschätzung des N-Umsatzes im Rahmen der Humusreproduktion im ökologischen Landbau - Projektvorstellung. [Development and verification of methods for estimating the nitrogen turnover in organic farming on the basis of data from long-term experiments – Project introduction.] Poster at: Vortragsveranstaltung mit Feldtag „Forschung zum ökologischen Landbau in Sachsen“, Roda, 14. 06. 2006. [Unpublished]

Romanyà, Joan and Rovira, Pere (2008) N availability after long-term organic farming in irrigated and rain-fed Mediterranean semi-arid grassy crops. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Rudolph, Gwendolyn; Bochicchio, Davide; Butler, Gillian; Dippel , Sabine; Dourmad, Jean Yves; Edwards , Sandra; Früh, Barbara; Illmann, Gudrun; Meier, Matthias; Prunier, Armelle; Rousing, Tine; Salomon, Eva; Silerova, Jitka; Sorensen, J.T.; Urban, Jiri; Vertes, Francois; Winckler, Christoph and Leeb, Christine (2012) ProPIG - Organic pig health, welfare and environmental impact across Europe. Poster at: Minding Animals, Utrecht, The Netherlands, 4-6 July 2012.

Ruhe, Iris; Loges, R. and Taube, F. (2003) Stickstoffflüsse in verschiedenen Fruchtfolgen des ökologischen Landbaus – Ergebnisse aus dem CONBALE-Projekt Lindhof. In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau: Ökologischer Landbau der Zukunft, Universität für Bodenkultur (Boku), Wien, pp. 97-100.

Saarela, Into (2008) Changes of yield responses and soil test values in Finnish soils in relation to cumulative phosphorus and potassium balances. In: NJF Report, Nordic Association of Agricultural Scientists, 4 (2), pp. 52-55.

Saarela, Into (2008) Estimating bioavailable reserves and potential leaching of soil P by simple chemical tests. In: NJF Report, Nordic Association of Agricultural Scientists, 4 (4), pp. 166-170.

Sahin, Fikrettin (2010) Organik Bitkisel Üretimde Biyoteknoloji ve Ar-Ge. [Agricultural Biotechnology For Organic Plant Production, and R&D.] Paper at: Türkiye IV. Organik Tarım Sempozyumu, Erzurum/Türkiye, 28 Haziran - 1 Temmuz 2010.

Sanches De Cima, Diego; Reintam, Endla; Eremeev, Viacheslav and Luik, Anne (2013) Soil chemical properties under different nutrient managements in Estonia. In: Mikomägi, Annika and Vilumaa, Kadri (Eds.) Book of Abstracts Down to Earth, p. 63.

Sanchez de Cima, Diego; Reintam, Endla and Luik, Anne (2013) Effects of organic versus conventional farming on different chemical soil parameters in Estonia. In: Løes, Anne-Kristin; Askegaard, Margrethe; Langer, Vibeke; Partanen, Kirsi; Pehme, Sirli; Rasmussen, Ilse A.; Salomon, Eva; Sørensen, Peter; Ullvén, Karin and Wivstad, Maria (Eds.) Organic farming systems as a driver for change, NJF Report, no. 9 (3), pp. 163-164.

Sangakkara, Dr. Ravi; Weerasekera, Mr. Danesh and Freyer, Prof.Dr. Bernhard (2008) Green manuring for tropical organic cropping – A comparative analysis. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Scharfy, Deborah; Raupp, Dr Joachim and Neumann, Elke (2005) Der Einfluss organischer Düngung im Langzeitdüngungsversuch auf das Ausmaß der Wurzelinfektion mit Arbuskulärer Mykorrhiza sowie die Entwicklung des wurzelexternen Myzels bei Kartoffel (Solanum tuberosum). [Effect of organic fertilisation on the root colonisation by arbuscular mycorrhizal fungi within a long-term fertilisation trial and the development of the extraradi-cal mycelium of potato (Solanum tuberosum).] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Schaub, Dagmar; Paulsen, Hans Marten; Böhm, Herwart and Rahmann, Gerold (2008) Mineral nitrogen in the course of a cash crop and two livestock rotations - first results from the long-term monitoring Trenthorst. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Schmidtke, Knut (2008) How to optimise symbiotic nitrogen fixation in organic crop rotations. Paper at: ISOFAR Conference 'Organic Agriculture in Asia', Dankook University, Republic of Korea, 13-14 March 2008. [Unpublished]

Schmidtke, Knut and Hof-Kautz, Claudia (2013) Workshop: Bodenfruchtbarkeit und Körnerleguminosenanbau - Anspruch und Wirklichkeit in der Praxis des Ökolandbaus. Workshop at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität Bonn, Deutschland, 5. bis 8. März 2013. [Completed]

Schuler, Christiana; Raupp, Joachim and George, Eckhard (2008) The importance of amino-N for humus formation studied by comparing amino-N input to the soil and soil total nitrogen content in long-term experiments. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Schulz, Franz; Brock, Christopher and Leithold, Günter (2009) Effekte unterschiedlicher Systeme der Grundbodenbearbeitung auf Erträge und Beikraut im Dauerfeldversuch Gladbacherhof. Paper at: 10. Wissenschaftstagung Ökologischer Landbau, Zürich, 11.-13. Februar 2009.

Schulz, Franz; Brock, Christopher and Leithold, Günter (2008) Effects of Farm Type and Different Intensities of Soil Tillage on Cash Crop Yields and Soil Organic Matter. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Schulz, Franz; Brock, Christopher and Leithold, Günter (2013) Viehhaltung im Ökologischen Landbau - ja oder nein? Effekte auf Bodenfruchtbarkeit, N-Bilanzen und Erträge. Paper at: 12. Wissenschaftstagung Ökologischer Landbau, Rheinische Friedrich-Wilhelms-Universität, Bonn, 5. bis 8. März 2013.

Shepherd, Mark; Hatch, David and Hatley, Damian (2002) Understanding soil nitrogen supply: organic matter quality and quantity. In: Powell, Jane and et al., (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 145-146.

Sommer, Hendrik; Schmid-Eisert, Andreas; Franz, Klaus and Leithold, Günter (2011) Steigerung der Produktionsintensität im Ökologischen Landbau: Ergebnisse einer 14jährigen Fallstudie am Beispiel des Lehr- und Versuchsbetriebes Gladbacherhof. Paper at: 11. Wissenschaftstagung Ökologischer Landbau, Gießen, 16.-18. März 2011.

Stefano, Dr. Canali; Alessandra, Dr. Trinchera; Emanuela, Dr. Di Bartolomeo; Luigi, Dr. Nisini; Anna, Dr. Benedetti and Francesco, Dr. Intrigliolo (2002) Soil fertility comparison among organic and conventional managed citrus orchards in Sicily. Speech at: 17th World Congress of Soil Science, Bangkok (Thailand), 14 – 21 August.

Stinner, Walter; Möller, Dr. Kurt and Leithold, Prof. Dr. Günter (2005) Biogaserzeugung im viehlosen Betrieb: Effekte auf Stickstoffmanagement, Erträge und Qualität. [Biogas production in a stockless farming system: Effects on nitrogen management, yield and quality.] In: Heß, J and Rahmann, G (Eds.) Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau, kassel university press GmbH, Kassel.

Strøm, Turid; Hansen, Sissel and Govasmark, Espen (2003) Mikromineralinnhold i jord og planter - mikromineralforsyning til drøvtyggere i økologisk landbruk. In: Grønn kunnskap, Planteforsk Kvithamar forskningssenter, 7 (3), Grønn kunnskap, pp. 122-137.

Sørensen, Peter; Khan, A R; Møller, Henrik B. and Thomsen, Ingrid Kaag (2012) Effects of anaerobic digestion of organic manures on N turnover and N utilization. In: Richards, K.G.; Fenton, O. and Watson, C.J. (Eds.) Proceedings of the 17th Nitrogen Workshop –Innovations for sustainable use of nitrogen resources., pp. 80-81.

Tamm, L.; Koepke, U.; Cohen, Y. and Leifert, C. (2007) Development of strategies to improve quality and safety and reduce cost of production in organic and ‘low input‘ crop production systems. Paper at: 3rd QLIF Congress: Improving Sustainability in Organic and Low Input Food Production Systems, University of Hohenheim, Germany, March 20-23, 2007.

Taube, Friedhelm; Wachendorf, M. and Loges, R. (2001) Auswirkungen reduzierter Produktionsintensität auf Futterqualität und ökologische Effekte. [Effects of reduced production intensity on forage quality and on organic effects.] Paper at: Hochschultagung der Cristian-Albrechts-Universität zu Kiel, Kiel, 2001.

Thomsen, I. K. (2002) Kan kvælstofmineraliseringen styres ved jordløsning? Poster at: Markvandring Foulumgaard, Foulumgaard, 13. juni 2002. [Unpublished]

Thomsen, Senior scientist Ingrid Kaag (2003) Kvælstofmineralisering efter jordløsning i vinterhvede. [Nitrogen mineralization as affected by soil disturbance in winter wheat.] Speech at: Markvandring, Forskningscenter Foulum, 12. juni 2003.

Thorup-Kristensen, Kristian (2003) Optimising nutrition in organic tomato production. [Gødningsoptimering i økologisk tomatproduktion.] In: Book of abstracts, HDC/HRIA/TGA Tomato Conference, pp. 14-15.

Thorup-Kristensen, Kristian (2002) Økologisk grønsagssædskifte uden kvælstofimport. In: Bakkegard, Mikkel (Ed.) Plantemøtet Østlandet 2002 (2), Grønn Forskning, pp. 139-144.

Thorup-Kristensen, Kristian and Pedersen, Lene (2006) Cropping systems with winter wheat or spring wheat? Root growth, catch crops, nitrogen leaching and baking quality. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Thyme, Mette and Ambus, Per (2004) From N2 fixation to N2O emission in a grass-clover mixture. In: Hatch, D.J.; Chadwick, D.R.; Jarvis, S.C. and Roker, J.A. (Eds.) Controlling nitrogen flows and losses, Wageningen Academic Publishers, The Netherlands, pp. 365-366.

Thyme, Mette and Ambus, Per (2003) From N2 fixation to N2O emission in a grass-clover pasture. Poster at: 12th N workshop "Controlling N flows and losses", Exeter, UK, 21st - 24th September 2003. [In Press]

van der Burgt, Ir. G.J.H.M. and Timmermans, Dr. B.G.H. (2009) The NDICEA model: a supporting tool for nitrogen management in arable farming. In: Sarapatka, Borivoj (Ed.) Bioacademy 2009 - Proceedings, pp. 4-8.

van Eekeren, N.; Murray, P.J. and Smeding, F.W. (2007) Soil biota in grassland, its ecosystem services and the impact of management. In: de Vliegher, A. and Carlier, L. (Eds.) Grassland Science in Europe, 12, pp. 247-257.

VIAN, Ph D Jean François; PEIGNE, Dr Joséphine; CHAUSSOD, Dr Rémi; DAVID, Dr Christophe and ROGER-ESTRADE, Pr Jean (2006) Spatial variability of microbial indicators and assessment of tillage systems on the soil microbiological functioning on organic farming. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Vinther, F.P. (2005) SimDen – A simple empirical model for quantification of N2O emission and denitrification. Paper at: Manure - an agronomic and environmental challenge. NJF-seminar no. 372, Nils Holgerssongymnasiet, Skurup, Sweden. Abstract of oral presentation, 5-6 September 2005.

Vinther, F.P. (2004) Effect of age and cutting frequency on below-ground biomass in grass-clover. In: Abstracts of the Workshop on Adaption and Management of Forage Legumes - Strategies for improved Reliability in Mixed Swards, pp. 23-24. [Unpublished]

Vinther, F.P. (2004) N-fiksering - hvor meget og hvordan? [N fixation - how much and how?] Speech at: Plantekongres 2004, Messecenter Herning, Danmark, 13.-14. januar 2004. [Unpublished]

Vinther, F.P.; Eriksen, J. and Hansen, E.M. (2004) Leaching of dissolved organic carbon (DOC) and nitrogen (DON) from grass-clover pastures after ploughing. Speech at: DOM 2004 - International workshop: Dissolved Organic Matter and the Cycling of Carbon, Nutrients and Metals, Bayreuth, Germany, October 3-6 2004.

Vinther, F.P.; Hansen, E.M. and Olesen, J.E. (2002) Relationship between crop rotation and microbial biomass and activity including field CO2 and N2O fluxes and N mineralization. In: Abstracts of NJF seminar no: 342 "Agricultural soils and greenhouse gasses in cool-temperate climate", p. 12.

Vinther, Finn P. (2000) Symbiotic nitrogen fixation and N-transfer in a grass-white clover mixture. In: Grassland Science in Europe, 5, pp. 415-417.

Wald, Fabian; Pekrun, Carola and Claupein, Wilhelm (2001) Einfluss der Bearbeitungsintensität beim Umbruch von Leguminosen-Grasgemengen auf die N-Mineralisierung zur Folge-frucht Winterweizen. [Influence of intensity of cultivation after a perennial legume-grass crop on N-mineralisation under the following crop winter wheat.] In: Gesellschaft für Pflanzenbauwissenschaften, (Ed.) 44. Jahrestagung (27.-29.09.) : Kurzfassungen der Vorträge und Poster, Mitteilungen der Gesellschaft für Pflanzenbauwissenschaften, no. 13, 117 -118.

Wald, Fabian; Pekrun, Carola and Claupein, Wilhelm (2000) Effect of tillage intensity and timing on nitrogen mineralization after a perennial forage crop. In: Proceedings of the 3rd International Crop Science Congress, p. 40.

Walker, R L; Watson, C A; Rees, R M and Stockdale, E A (2006) Improving supply and phosphorous use efficiency in organic farming systems. In: Atkinson, C; Ball, B; Davies, D H K; Rees, R; Russell, G; Stockdale, E A; Watson, C A; Walker, R and Younie, D (Eds.) Aspects of Applied Biology 79, What will organic farming deliver? COR 2006, Association of Applied Biologists, pp. 311-315.

Wichmann, Stefan; Loges, Ralf and Taube, Friedhelm (2003) Vergleich von verschiedenen Leguminosenarten in Reinsaat und Gemenge im Hinblick auf Ertrag, Futterqualität, Stickstofffixierungsleistung und Vorfruchtwirkung. Projektbeschreibung und erste Ergebnisse. [Comparison of different species of legumes in clean seed and mixed with others. Special view on yield, fodder quality, nitrogene fixation and first fruit effect. Project description and first results.] In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau - Ökologischer Landbau der Zukunft, Universität für Bodenkultur Wien - Institut für ökologischen Landbau, pp. 505-506.

Wichmann, Stefan; Loges, Ralf and Taube, Friedhelm (2003) Vergleich von verschiedenen Leguminosenarten in Reinsaat und Gemenge im Hinblick auf Ertrag, Futterqualität, Stickstofffixierungsleistung und Vorfruchtwirkung. Projektbeschreibung und erste Ergebnisse. [Comparison of yield, forage quality, N2 fixation, residuals and pre crop effect of different grain legumes species in monocrop and in intercropping with cereals.] In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum Ökologischen Landbau - Ökologischer Landbau der Zukunft, Universität für Bodenkultur Wien - Institut für ökologischen Landbau, pp. 505-506.

Willekens, Koen and Van Gils, Bert (2013) TILMAN-ORG veldproef 2012-2013 Design, parameters en meetmethoden. Poster at: [Completed]

Zanen, Ir. M. and Koopmans, Dr. Ir. C.J. (2008) Improving Soil Structure and Nitrogen Use Efficiency by GPS-controlled Precision Tillage Technology in Organic Farming. Poster at: Cultivating the Future Based on Science: 2nd Conference of the International Society of Organic Agriculture Research ISOFAR, Modena, Italy, June 18-20, 2008.

Znaor, Darko (2009) Impact of Large-Scale Conversion to Organic Farming on Greenhouse Gas Emissions. In: Znaor, Darko (Ed.) Proceedings of the International Conference on Organic Agriculture and Climate Change, Avalon Foundation, Wommels, pp. 58-68.

Znaor, Darko and Karyotis, Theodore (2011) Capacity building and public awareness raising on Nitrates Directive in the countries aspiring to EU accession. In: Karyotis, T.; Gabriels, D. and Noulas, C. (Eds.) Proceedings of the 6th International Congress of the European Society for Soil Conservation “Innovative Strategies and Policies for Soil Conservation”, National Agricultural Research Foundation , Athens, pp. 172-173.

Proceedings

Bio-Institut, LFZ Raumberg-Gumpenstein (Ed.) (2013) Fachtagung für Biologische Landwirtschaft - Grünlandbasierte BIO-Rinderhaltung. Lehr- und Forschungszentrum für Landwirtschaft Raumberg-Gumpenstein, Irdning. Proceedings of Fachtagung für Biologische Landwirtschaft - Grünlandbasierte BIO-Rinderhaltung, Irdning, 07.11.2013.

Znaor, Darko (Ed.) (2009) Organic Agriculture and Climate Change. Avalon Foundation, Wommels, pp. 181. Proceedings of International Conference on Organic Agriculture and Climate Change, Sofia , September 28-29, 2009.

van der Burgt, Ir. G.J.H.M and Timmermans, Dr. B.G.H. (Eds.) (2008) Soil Nitrogen: research and extension. . Proceedings of 4th QLIF workshop, Driebergen, the Netherlands, 13-15 February 2008.

Rahmann, Gerold (Ed.) (2007) Ressortforschung für den Ökologischen Landbau 2007. [Organic Farming Research of the Federal Ministry of Nutrition, Agriculture and Consumer Protection 2007.] Bundesforschungsanstalt für Landwirtschaft, Landbauforschung Völkenrode - Sonderheft, no. 314. Proceedings of Statusseminar 2007, Detmold, 5. Oktober 2007.

Bayerische Landesanstalt für Landwirtschaft, Institut für Agrarökologie, Ökologischen Landbau und Bodenschutz (Ed.) (2003) Forschung für den ökologischen Landbau in Bayern. [Research for organic agriculture in Bavaria.] Bayerische Landesanstalt für Landwirtschaft (LfL), Freising, Schriftenreihe der Bayerischen Landesanstalt für Landwirtschaft, no. 3/03. Proceedings of Ökolandbautag der Bayerischen Landesanstalt für Landwirtschaft, Triesdorf, 10.02.2003.

Raupp, Dr Joachim (Ed.) (1996) Quality of plant products grown with manure fertilization. IBDF Darmstadt, Germany, 9, Publications of the Institute for Biodynamic Research, Darmstadt. Proceedings of 4th workshop on Fertilization in Organic Farming, Juva, Finland, 6-9 July 1996.

Elmholt, Susanne; Stenberg, Bo; Grønlund, Arne and Nuutinen, Visa (Eds.) (2000) Soil Stresses, Quality and Care. Danish Institute of Agricultural Research, DIAS Report, no. 38. Proceedings of Soil Stresses, Quality and Care. NJF Seminar 310, Ås, Norway, 10-12 April 2000.

Report

Freyer, Bernhard; Surböck, Andreas; Heinzinger, Markus; Friedel, Jürgen K. and Schauppenlehner, Thomas (Eds.) (2010) Evaluierung LE07-13. Bewertung des viehlosen biologischen Ackerbaus und seiner agrarökologischen Leistungen im österreichischen Trockengebiet (MUBIL III). Zwischenbericht. [Evaluation LE07-13. Evaluation of stockless organic crop farming and its agri-environmental achievements in the semi-arid region of Austria (MUBIL III). Midterm Report.] .

ADAS (2006) The development of improved guidance on the use of fertility building crops in organic farming (CTE0204). ADAS , Wolverhampton.

Sommer, Sven G. and Eriksen, Jørgen (Eds.) (2000) Husdyrgødning og kompost. Næringsstofudnyttelse fra stald til mark i økologisk jordbrug. FØJO-rapport, no. 7. Forskningscenter for Økologisk Jordbrug.

Anon, (2002) Advantages and disadvantages of different break crops in organic grass/arable rotations (OF0143). Scottish Agricultural College.

Anon, (2002) Improving N use and performance of arable crops on organic arable farms using an expert group approach (OF0178). ADAS, Boxworth.

Beckmann, Uta; Kolbe, Hartmut; Model, Annett and Russow, Rolf (2001) Ackerbausysteme im ökologischen Landbau unter besonderer Berücksichtigung von N-Bilanz und Effizienzkennzahlen. [Organic arable farming systems with particular consideration of nitrogen balance and parameters of efficiency.] UFZ-Bericht, no. 14. UFZ-Umweltforschungszentrum, Leipzig-Halle.

Beckmann, Uta; Kolbe, Hartmut; Model, Annett and Russow, Rolf (2000) Ackerbausysteme im ökologischen Landbau. [Organic arable farming systems.] Sächsische Landesanstalt für Landwirtschaft, Dresden.

Berner, Alfred; Frei, Röbi and Mäder, Paul (2003) Einfluss von biologisch-dynamischen Präparaten, Düngung und Bodenbearbeitung auf Bodenfruchtbarkeit und Ertrag. [Effects of biobynamic preparations, fertilisation and soil management on soil fertility and yields.] Projektbericht. Forschungsinstitut für biologischen Landbau Frick.

Berntsen, J.; Petersen, B.M.; Kristensen, I.S. and Olesen, J.E. (2004) Nitratudvaskning fra økologiske og konventionalle planteavlsbedrifter - simuleringer med FASSET bedriftsmodellen. Markbrug, no. 107. Danmarks JordbrugsForskning.

Berntsen, J.; Petersen, B.M.; Kristensen, I.S. and Olesen, J.E. (2004) Nitratudvaskning fra økologiske og konventionelle planteavlsbedrifter - simuleringer med FASSET bedriftsmodellen. Intern rapport, no. 56. Forskningscenter for Økologisk Jordbrug (FØJO).

Böhler, Daniel; Dierauer, Hansueli and Clerc, Maurice (2006) Stickstoffintensitätsversuch im Bio-Weizen 2006. FiBL-Bericht. Forschungsinstitut für biologischen Landbau (FiBL) CH-Frick.

Briggs, Stephen (2008) Nitrogen Supply and Management in Organic Farming. Institute of Organic Training and Advice (IOTA), Craven Arms.

Brock, Christopher; Hoyer, Uta; Leithold, Günter and Hülsbergen, Kurt-Jürgen (2008) Entwicklung einer praxisanwendbaren Methode der Humusbilanzierung im ökologischen Landbau. [Development of a method for humus balancing in organic farming for application under practice conditions.] Justus-Liebig-Universität Gießen, Professur für Organischen Landbau, Technische Universität Münschen, Lehrstuhl für Ökologischen Landbau und Pflanzenbausysteme.

Brock, Christopher; Oltmanns, Meike and Spiegel, Ann-Kathrin (editor): Landesbetrieb Landwirtschaft Hessen (LLH) (Ed.) (2013) Humusmanagement und Humusbilanz hessischer Öko-Betriebe. Eigenverlag, Kassel.

Burgt, G.J.H.M. and Bus, M.C. (2013) PlantyOrganic: Design and results 2012. Louis Bolk Institute, Driebergen.

Burgt, Geert-Jan H.M. and Rietberg, P.I. (2012) Evaluation of the NDICEA model. [Evaluatie van het NDICEA model.] Louis Bolk Instituut publications, no. 2012-036 LbP. Louis Bolk Instituut, Driebergen.

Cormack, Dr W F (1998) Organic Arable Systems at ADAS Terrington OF0112. ADAS.

Deru, Joachim; Eekeren, N. van and Boer, H. de (2010) Beworteling van grasland - een literatuurstudie: Nutriëntenopname in relatie tot bewortelingsdiepte en - intensiteit; factoren en potentiële maatregelen die de beworteling beïnvloeden. [Rooting of grassland: a literature review on nutrient uptake in relation to rooting depth and density, and on potential measures to stimulate deep and dense rooting of grass.] Lous Bolk Instituut, Driebergen, Netherlands.

Engström, Agr Lena and Lindén, AgrD Börje (2008) Kväveförsörjning i ekologiska odlingssystem med vall - höstraps - vete. [N-supply in organic crop systems with ley - winter oilseed rape - wheat.] Report, no. 16. .

Eriksen, J and Mogensen, J (2001) Forfrugtsværdi og N-udvaskning efter ompløjning af flerårige græsmarker med forskellige forhistorier. DJF-rapport, no. 46. DJF.

Eriksen, J and Mogensen, J (2001) Ompløjning af afgræsningsmarker. Grøn Viden Markbrug, no. 237. DJF.

Fredshavn, Jesper; Tybirk, Knud and et al., (2003) FØJOII-29: Nature Quality in Organic Farming. Midterm Status Report 2003. National Environmental Research Institute, Dept. Wildlife Ecology and Biodiversity.

Gjettermann, Birgitte (2005) Modeling dissolved organic matter mobilization and immobilization in the root zone: Effect of soil treatment on denitrification and N leaching. The Royal Veterinary and Agricultual University, Department of Agricultural Science.

Granstedt, Artur (1999) Växtnäringens flöde genom jordbruk och samhälle – vägar att sluta kretsloppen. Ekologiskt lantbruk, no. 29. .

Gruber, Harriet (2009) Einfluss einer mineralischen Grundnährstoffdüngung mit im ökologischen Landbau zugelassenen Düngemitteln auf Boden- und Pflanzengehalte sowie Ertrag. Landesforschungsanstalt für Landwirtschaft und Fischerei Mecklenburg-Vorpommern, Sachgebiet Acker- und Pflanzenbau.

Haas, Guido; Brand, Heike and Puente de la Vega, Mireia (2004) Stickstoffversorgung der Zweitfrüchte Feldgemüse und Mais nach Winterzwischenfrucht-Leguminosen. [Nitrogen supply of vegetable and maize crops following winter green manure legumes.] Bundesanstalt für Landwirtschaft und Ernährung, Bonn, Geschäftsstelle Bundesprogramm Ökologischer Landbau.

Hackl, E. and Sessitsch, A. (2011) CORE Organic Project Series Report: PathOrganic Deliverables. .

Hospers-Brands, A.J.T.M.; Anema, D. and Bus, M.C. (2014) PlantyOrganic: Results 2013. Louis Bolk Instituut publications, no. 2014-013 LbP. Louis Bolk Instituut, Driebergen.

Hospers-Brands, A.J.T.M. and Burgt, Geert-Jan H.M. (2013) Verkenningen organische stof: Proefbedrijf Vredepeel. [Prospective study on Organic Matter: Experimental site Vredepeel.] Louis Bolk Instituut, Driebergen.

Hospers-Brands, A.J.T.M. and Burgt, Geert-Jan H.M. (2013) Verkenningen organische stof; Proefbedrijf Vredepeel. [Prospective study on Organic Matter: Experimental site Vredepeel.] Louis Bolk Instituut , Driebergen.

Institut für Biologisch-Dynamische Forschung e.V., DE-Darmstadt (2002) Arbeitsbericht 2001 [Annual report 2001]. Institut für Biologisch-Dynamische Forschung e.V., Darmstadt.

Köhler, Brigitte and Kolbe, Hartmut (2007) Programm BEFU, Teil Ökologischer Landbau: Verfahrensbeschreibung und PC-Anleitung zu Methoden der Bilanzierung und Düngungsbemessung. Sächsische Landesanstalt für Landwirtschaft, D-Dresden, Fachbereich Pflanzliche Erzeugung.

Kolbe, Hartmut (2009) Effects of conventional and organic land use types on water protection criteria in Germany. Saechsisches Landesamt fuer Umwelt, Landwirtschaft und Geologie, D-Dresden, Abteilung Pflanzliche Erzeugung.

Kolbe, Hartmut (2007) Effects of increasing fertilization in organic farming fodder cultivation and market crop systems. Sächsische Landesanstalt für Landwirtschaft, DE-Leipzig, FB Pflanzliche Erzeugung.

Kolbe, Hartmut and Köhler, Brigitte (2008) Erstellung und Beschreibung des PC-Programms BEFU, Teil Ökologischer Landbau. Verfahren der Grunddüngung, legumen N-Bindung, Nährstoff- und Humusbilanzierung. Schriftenreihe des Landesamtes für Umwelt, Landwirtschaft und Geologie, no. Heft 36/2008. Saechsisches Landesamt fuer Umwelt, Landwirtschaft und Geologie.

Kolbe, Dr. Hartmut and Prutzer, Dipl. Ing. agr. Ina (2004) Überprüfung und Anpassung von Bilanzierungsmodellen für Humus an Hand von Langzeitversuchen des Ackerlandes. [Verification of humus balance methods using arable land long-term field trials.] Sächsische Landesanstalt für Landwirtschaft, Fachbereich Pflanzliche Erzeugung.

Kolbe, Hartmut (editor): Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie, Dresden (Ed.) (2013) Anwendungsbeispiele zur standortangepassten Humusbilanzierung im ökologischen Landbau. Informationen für Praxis, Beratung und Schulung. Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie (LfULG), D-Dresden.

Kolbe, Hartmut (editor): Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie (Ed.) (2012) Bilanzierungsmethoden und Versorgungsniveau für Humus. [Accounting methods and supply level for humus.] Schriftenreihe des LfULG, no. 19/2012. Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie, Abteilung Pflanzliche Erzeugung/Referat Pflanzenbau, Nachwachsende Rohstoffe, Dresden.

Laber, Hermann (2003) Praxiseinführung und Evaluierung eines Kalkulationsschemas zur bedarfsgerechten N-Düngung im ökologischen Freilandgemüsebau. [Model for demand-oriented N-fertilisation in organic vegetable production: Introduction into agricultural practice and evaluation.] Sächsische Landesanstalt für Landwirtschaft, DE-Dresden Pillnitz, Fachbereich Gartenbau und Landespflege.

Laber, Hermann (2002) Kalkulation der N-Düngung im ökologischen Gemüsebau. [Calculating nitrogen fertilisation in organic vegetable growing.] Schriftenreihe der Sächsischen Landesanstalt für Landwirtschaft, no. 6. Sächsische Landesanstalt für Landwirtschaft.

Lammert, Benjamin; Weissbart, Joseph; Groschupp, Christine; Vetter, Dr. Reinhold; Berner, Alfred; Leclerc, Blaise and Schaub, Christiane (2002) Stickstoffverfügbarkeit von Komposten im Ökolandbau. [Disponibilité de l'azote des composts en agriculture biologique.] ITADA-Sekretariat F-68000 Colmar.

Langer, Vibeke; Dalgaard, Tommy; Heidmann, Tove; Elmegaard, Niels; Mogensen, Lisbeth; Odderskær, Peter and Hasler, Berit (editor): Langer, Vibeke (Ed.) (2002) Omlægning til økologisk jordbrug i et lokalområde. Scenarier for natur miljø og produktion. [Conversion to organic farming in a local area. Scenarios for nature, encviroment and production.] DARCOF Reports, no. 12. .

Main, Michael; Lynch, Derek; Ward, Amanda; Voroney, Paul; Schneider, Kim and Juurlink, Shelly (2010) Bilan phosphore du sol et fixation de l'azote dans fermes laitières biologiques de l'Ontario et de la Nouvelle-Écosse. [Soil P Status and Nitrogen Fixation on Organic Dairy Farms in Ontario and Nova Scotia.] Bulletins de vulgarisation - CABC , no. E2010-40. Centre d'agriculture biologique du Canada.

Main, Michael; Lynch, Derek; Ward, Amanda; Voroney, Paul; Schneider, Kim and Juurlink, Shelly (2010) Soil P Status and Nitrogen Fixation on Organic Dairy Farms in Ontario and Nova Scotia. [Bilan phosphore du sol et fixation de l'azote dans fermes laitières biologiques de l'Ontario et de la Nouvelle-Écosse.] OACC Technical Bulletins, no. E2010-40. Organic Agriculture Centre of Canada.

Müller, Siegfried (2003) Wirkung verschiedener organischer Mulchmaterialien auf den Nährstoff- und Wasserhaushalt des Bodens - Quantifizierung der Bedeutung für den ökologischen Landbau. [Reaction of different organic mulch materials on the nitrogen and water supply in soil - quantification of the meaning for organic farming.] Fachhochschule Erfurt, Fachbereich Gartenbau.

Müller, Dr. Torsten and von Fragstein und Niemsdorff, Prof. Dr. Peter (2003) Umsatz und Wirkung vegetabiler Düngemittel im Ökologischen Gemüseanbau. [Organic Fertilisers Derived from Plant Materials in Organic Vegetable Production.] Universität Kassel, Fachbereich Ökologische Agrarwissenschaften.

Nawrath, Dr. Martin; Vetter, Dr. Reinhold; Weissbart, Joseph; Hebeisen, Dr. Thomas; Römer, Dr. Peter; Angelbauer, Heinz; Frick, Claudia and Life Food GmbH Freiburg, (2002) Anbau- und Verwertungsstrategien für Sojabohnen und Weiße Lupinen im ökologischen Landbau unter besonderer Berücksichtigung des N-Haushalts. [Stratégies de production et de valorisation du soja et du lupin en production biologique avec prise en compte de la gestion de l´azote.] ITADA-Sekretariat F-68000 Colmar.

Nyberg, Anna and Lindén, Börje (2008) Åkerbönor som förfrukt till vårsäd i ekologiskodling. [Faba beans as previous crop to spring cereals in organic farming.] Report, no. 15. SLU, Swedish University of agricultural sciences, Department of soil sciences.

Nyberg, Anna and Lindén, Börje (2000) Dokumentation av ekologiska växtodlingsgårdar i Västra Sverige 1996-98. [Documentation of organic arable farms in west Sweden 1996-98.] Reports from Department of Agricultural research Skara, Series B Crops and soils, no. 6. Swedish University of Agricultural Sciences.

Opheusden, A. H. M.; Burgt, Geert-Jan H.M. and Rietberg, P.I. (2012) Decomposition rate of organic fertilizers: effect on yield, nitrogen availability and nitrogen stock in the soil. [Afbraaksnelheid van organische mest: effect op opbrengst, stikstof beschikbaarheid en stikstof voorraad in de bodem.] Louis Bolk Instituut Publications, no. 2012-033 LbP. Louis Bolk Instituut, Driebergen.

Padel, Susanne (2001) Conversion to Organic Production Software (OrgPlan, OF0159). University of Wales Aberystwyth, Institute of Rural Sciences.

Philipps, (2003) Utilisation of Compost at Sheepdrove Organic Farm. Sheepdrove Organic Farm and Elm Farm Research Centre.

Shepherd, Dr M. A. (2002) Understanding soil fertility in organically farmed systems (OF0164). ADAS Consulting Ltd.

Steffens, Diedrich; Stamm, Roland; Leithold, Günter and Schubert, Sven (2003) Phosphat-Mobilisierung durch Haupt- und Zwischenfrüchte nach Düngung von weicherdigem Rohphosphat im ökologischen Landbau. [Phosphate mobilization by cultivating main and catch crop after application of mineral phosphorus fertilizer in organic farming.] Justus-Liebig-Universität Gießen, Institut für Pflanzenernährung.

Stockdale, E (2001) Optimisation of phosphorus and potassium management within organic farming systems (OF0114). Institute or Arable Crops Research, Rothamsted.

Timmermans, B.G.H.; Sukkel, Wijnand and Bokhorst, J.G. (2012) Telen bij lage fosfaatniveaus in de biologische landbouw; achtergronden en literatuurstudie. [Grow at low phosphate levels in organic farming; backgrounds and literature study.] Louis Bolk Instituut Publication. Louis Bolk Instituut .

van der Burgt, Ir. G.J.H.M. and Timmermans, Dr. B.G.H. (2009) Fusarium in wheat. Effects of soil fertility strategies and nitrogen levels on mycotoxins and seedling blight. .

van der Burgt, Geert-Jan (2012) PlantyOrganic; bedrijfsontwerp. [PlantyOrganic: system design.] Louis Bolk Instituut, 2012.

van der Burgt, Geert-Jan (2012) Stikstofvoorziening uit maaimeststoffen; bedrijfsontwerp. [Nitrogen supply out of cut and carry fertilizers: system design.] Louis Bolk Instituut, 2012.

van der Burgt, Geert-Jan; Timmermans, Bart and Staps, S. (2012) Minder en Anders Bemesten; resultaten van een vierjarig project over innovatieve bemesting. [Less and adapted fertilizers: results of a 4-year project on innovative fertilizer strategies.] Louis Bolk Instituut, 2011.

van Opheusden, A.H.M.; van der Burgt, G.J.H.M. and Rietberg, P.I. (2012) Decomposition rate of organic fertilizers: effect on yield, nitrogen availability and nitrogen stock in the soil. [Afbraaksnelheid van organische mest: effect op opbrengst, stikstofbeschikbaarheid en stikstof voorraad in de grond.] Louis Bolk Instituut, Driebergen, The Netherlands.

Védie, Hélène (2006) Fertilisation de la courge de plein champ : test de différentes doses et de 2 types d'engrais - rapport final 2005. [Pumpkin fertilisation in open field : test of different doses with 2 types of manure - annual report 2005.] Groupe de Recherche en Agriculture Biologique.

Védie, Hélène and Taulet, Annick (2006) Engrais verts en interculture d’automne-hiver en plein champ - rapport final 2005. [Test of different green manures as winter intercrops in open field - annual report 2005.] Groupe de Recherche en Agriculture Biologique.

Vercammen, Jef and Gomand, Ann (2013) Aanpak van herinplantproblemen in de bio fruitteelt. [Tackling apple replant disease in organic tree fruit production.] CCBT, Belgium.

Vetter, Dr. Reinhold; Miersch, Martin; Weissbart, Joseph; Freyer, Dr. Bernhard and Rennenkampff, Kai (2000) Stickstoffversorgung und -dynamik in Fruchtfolgen vieharmer Betriebe des ökologischen Landbaus. [Gestion de l´azote dans des rotations culturales en agriculture biologique ayant peu ou pas d´élevage.] ITADA-Sekretariat F-68000 Colmar.

Vinther, F.P. (2005) Ærter som kvælstofsamler i vinterafgrøder. [Field peas as collector of nitrogen in winter cereals.] Danmarks JordbrugsForskning, Afdeling for Jordbrugsproduktion og Miljø.

Vinther, Finn P. and Hansen, Søren (2004) SimDen - en simpel model til kvantificering af N2O-emission og denitrifikation. [SimDen - a simple model for quantification of N2O-emission and denitrification.] DJF rapport, no. 104. Danish Institute of Agricultural Sciences, Department for Agroecology.

Wolfe, M. S. and Cormack, W. F. (2002) Companion cropping for organic field vegetables (OF0181). ADAS, Terrington.

Woolf, Dominic (2008) Biochar as a Soil Amendment: A Review of the Environmental Implications. Swansea University, School of the Environment and Society.

Report chapter

Blume, Steffen (2013) Sewage sludge is a natural fertilizer product on organic farms! In: Økologisk Planteavlsberetning 2013. Økologisk Rådgivning, pp. 3-5.

Graß, Rüdiger (2008) Energie aus Biomasse im Ökolandbau - Weiterentwicklung oder Konventionalisierung der Ökobetriebe? [Energy from biomass for organic farming systems.] In: AgrarBündnis e.V., (Ed.) Der kritische Agrarbericht 2008. ABL-Verlag, D-Hamm / AgrarBündnis e.V., pp. 95-99.

Haas, Guido (2003) Untersaaten in Kartoffeln: Sonnenblume, Mais oder Gelbsenf. [Undersown crops in potatoes: sunflower, maize or yellow mustard.] In: Dokumentation 10 Jahre Leitbetriebe Ökologischer Landbau in Nordrhein-Westfalen. Schriftenreihe des Lehr- und Forschungsschwerpunktes „Umweltverträgliche und Standortgerechte Landwirtschaft“, no. 105. Landwirtschaftliche Fakultät der Rheinischen Friedrich-Wilhelms-Universität Bonn, pp. 105-112.

Kristensen, Ib Sillebak; Dalgaard, Randi and Kristensen, Troels (2002) Indirekte beregning af N-fiksering. In: Kvælstofbalancer på landbrugsbedriften – status og perspektiv. Temamøde på Forskningscenter Foulum, 24. april 2002. Intern Rapport, no. 157. Danmarks JordbrugsForskning, pp. 31-40.

Oelofse, Myles and de Neergaard, Andreas (2011) Organic farming and resource efficiency. In: Kölling, I. (Ed.) Organic Food and Farming. A system Approach to meet the Sustainability Challenge. IFOAM EU Group, Belgium, chapter 5, pp. 15-17.

Petersen, B.M. and Berntsen, J. (2002) Omsætning i jordpuljen på forskellige bedriftstyper. In: Kvælstofbalancer på landbrugsbedriften - status og perspektiver. DJF intern rapport 157.. DIAS internal report, no. 157. , pp. 41-47.

Ravnskov, Sabine and Larsen, John (2007) Mykorrhiza i økologisk planteproduktion. [Mycorrhiza in organic crop production.] In: Hansen, Jesper (Ed.) Økologisk Planteavlsberetning 2007. Økologisk Rådgivning, chapter 7, pp. 51-54.

Thorup-Kristensen, Kristian (2004) Forslag til øget kvælstofeffekt af efterafgrøder ved optimeret artsvalg, management og placering. In: Jørgensen, Uffe (Ed.) Forberedelse af Vandmiljøplan III. Rapport fra Kvælstofgruppen (F10). Forbedret kvælstofudnyttelse i mark og effekt på kvælstoftab. , chapter 4.5, pp. 100-110.

Vinther, F.P.; Hansen, E.M. and Eriksen, J. (2005) Udvaskning af organisk kulstof efter kløvergræs. [Leaching of organic carbon and nitrogen.] In: Olesen, J.E. (Ed.) Drivhusgasser fra jordbruget - reduktionsmuligheder. DJF rapport, no. Markbrug nr. 113. Danmarks JordbrugsForskning, Afdeling for Jordbrugsproduktion og Miljø, chapter 11, pp. 129-140.

Book

Raupp, Joachim; Pekrun, Carola; Oltmanns, Meike and Köpke, Ulrich (Eds.) (2006) Long Term Field Experiments in Organic Farming. ISOFAR Scientific Series, no. 1. Verlag Dr. Köster, Berlin.

Stein-Bachinger, Dr. Karin; Bachinger, Dr. Johann and Schmitt, Dr. Liliane (Eds.) (2004) Nährstoffmanagement im ökologischen Landbau - Ein Handbuch für Beratung und Praxis mit Anwendungs-CD. [Nutritionmanagement for organic farming.] KTBL-Schrift 423. KTBL.

Beckmann, Uta; Kolbe, Hartmut; Model, Annett and Russow, Rolf (2002) Ackerbausysteme im ökologischen Landbau: Untersuchungen zur Nmin-, N2O-N- und NH2-N-Dynamik sowie Rückschlüsse zur Anbau-Optimierung. [Arable organic farming systems: study on the dynamics of nitrogen mineralisation and demineralisation and conclusions for improving methods of cultivation.] Initiativen zum Umweltschutz, no. 35. Erich Schmidt Verlag, Berlin.

Fliessbach, Andreas; Mäder, Paul; Pfiffner, Lukas; Dubois, David and Gunst, Lucie (2000) Bio fördert Bodenfruchtbarkeit und Artenvielfalt - Erkenntnisse aus 21 Jahren DOK-Versuch. [Organic farming enhances soil fertility and biodiversity Results from a 21 year old field trial.] FiBL-Dossier. Forschungsinstitut für biologischen Landbau (FiBL), CH-Frick.

Haas, Guido (2004) Stickstoffversorgung von Weisskohl, Silo- und Körnermais durch Winterzwischenfrucht-Leguminosen. Schriftenreihe Institut für Organischen Landbau - Universität Bonn. Verlag Dr. Koester, Berlin.

Haas, Guido (2003) Grundwasserschutz im Organischen Landbau: Untersaaten in Kartoffeln zur Minderung hoher Restnitratmengen im Boden. Schriftenreihe Institut für Organischen Landbau - Universität Bonn. Verlag Dr. Koester, Berlin.

Haas, Guido (2001) Grundwasserschutz im Organischen Landbau: Untersaaten in Kartoffeln zur Minderung hoher Restnitratmengen im Boden. [Ground water protection in organic farming: Undersown catch crops in potatoes to reduce high residual nitrate content in the soil.] Schriftenreihe Institut für Organischen Landbau - Universität Bonn, no. ISBN 3-89574-472-7. Verlag Dr. Koester, Berlin.

Kolbe, Hartmut and Schuster, Martina (2011) Bodenfruchtbarkeit im Öko-Betrieb. Untersuchungsmethoden. [Soil fertility in organic farms. investigation methods.] Sächsisches Landesamt für Umwelt, Landwirtschaft und Geologie, Dresden.

Lichtenhahn, Martin; Berner, Alfred and Van der Berge, Paul (1998) Nährstoffversorgung im Biogemüsebau. FiBL-Merkblatt. Forschungsinstitut für biologischen Landbau (FiBL), CH-Frick.

Schmutz, Res and Böhler, Daniel (2002) Ackerbohnen. Merkblatt. Forschungsinstitut für biologischen Landbau, Frick.

Shepherd, Mark; Gibbs, Paul and Philipps, Lois (2002) Managing Manure on Organic Farms. ADAS Gleadthorpe Research Centre and Elm Farm Research Centre, Mansfield and Newbury.

Thorup-Kristensen, Kristian; Magid, Jacob and Jensen, Lars Stoumann (2003) Catch crops and green manures as biological tools in nitrogen management in temperate zones. Elsevier, .

Tiemens-Hulscher, Marjolein; Lammerts van Bueren, E.T. and Struik, Paul (2012) Selectiestrategie voor de ontwikkeling van stikstofefficiënte biologische aardappelrassen: Handleiding voor (hobby)kwekers. [Selection strategy to develop nitrogen efficient organic potato varieties: manual for (small) breeders.] Louis Bolk Instituut Publications, no. 2012-043 LbP. Louis Bolk Instituut, Driebergen.

Timmermans, B.G.H.; Eekeren, N. van and Bos, M (2010) Fosfaat uitmijnen op natuurpercelen met gras/klaver en kalibemesting: Handreiking voor de praktijk. [Phosphate extraction on natural plots with grass / clover crop and potassium fertilization: Guide for practice.] Louis Bolk Instituut, Driebergen.

Book chapter

Berner, Alfred; Gloor, S.; Fuchs, Jacques G.; Tamm, Lucius and Mäder, Paul (2003) Gesunder Boden - gesunde Pflanzen. [Healthy soils - healthy plants.] In: Freyer, Bernhard (Ed.) Beiträge zur 7. Wissenschaftstagung zum ökologischen Landbau: Ökologischer Landbau der Zukunft. Wien, 24.-26. Februar 2003. Universität für Bodenkultur, Wien - Institut für Ökologischen Landbau, pp. 443-444.

Berner, Alfred; Heller, Stefan and Mäder, Paul (1999) Nährstoffbilanzen im biologischen Landbau. [Nutrient balances in organic agriculture.] In: Hoffmann, H. and Müller, S. (Eds.) Beiträge zur 5. Wissenschaftstagung zum Ökologischen Landbau "Vom Rand zur Mitte". 23.-25.02.1999. Humboldt Universität zu Berlin. Verlag Dr. Köster, Berlin, pp. 226-229.

Berner, Alfred; Scherrer, Daniel and Alföldi, Thomas (1997) Stickstoffeffizienz von unterschiedlich aufbereiteten Misten in einer Ackerbaufruchtfolge auf Lösslehm. In: Köpke, U. and Eisele, J.-A. (Eds.) Beiträge zur 4. Wissenschaftstagung zum Ökologischen Landbau. 03.-04.03.1997 an der Rheinischen Friedrich-Wilhelms-Universität, Bonn.. Verlag Dr. Köster, Berlin, pp. 136-142.

Canali, Stefano (2003) Soil quality of organically managed citrus orchards in the Mediterranean area. In: Organic Agriculture: Sustainability, Markets and Policies. OECD. CABI Publishing, Wallingford, UK, chapter 2, pp. 115-125.

Elmholt, S. and Holmstrup, M. (2003) Livet i jorden. In: Holmstrup, M. (Ed.) Økologisk landbrug og naturen - gør økologisk landbrug en forskel for natur og miljø?. Miljøbiblioteket, no. 1. Gads Forlag, chapter 2, pp. 21-31.

Erdal, Ülfet; Sökmen, Ömer; Üner, Kürşat; Bilir, Lamia; Göçmez, Selçuk; OKUR, Nur; Okur, Bülent; Anaç, Dilek; Ongun, Ali Rıza; Ertem, Atila and Çakmak, Reşat (2010) Bağ Yetiştiriciliğinde Organik ve Konvansiyonel Tarım Uygulamalarının Verim, Kalite ve Toprak Özellikleri Üzerine Etkileri. [The effects of Organic and Conventional Farming Practices on Yield, Quality and Soil Properties in Vineyard Growing.] In: Alay Vural, Ayşen (Ed.) Organik Tarım Araştırma Sonuçları 2005-2010. T.C. Tarım ve Köyişleri Bakanlığı, Ankara, Turkey, pp. 333-340.

Erdal, Ülfet; Sökmen, Ömer; Üner, Kürşat; Bilir, Lamia; Göçmez, Selçuk; Okur, Nur; Okur, Bülent; Anaç, Dilek; Ongun, Ali Rıza; Ertem, Atila and Çakmak, Reşat (2010) Pamuk Yetiştiriciliğinde Organik ve Konvansiyonel Tarım Uygulamalarının Verim, Kalite ve Toprak Özellikleri Üzerine Etkileri. [The effects of Organic and Conventional Farming Practices on Yield, Quality and Soil Properties in Cotton Growing.] In: Alay Vural, Ayşen (Ed.) Organik Tarım Araştırma Sonuçları. T.C. Tarım ve Köyişleri Bakanlığı, Ankara, Turkey, pp. 325-332.

Eriksen, J. and Thorup-Kristensen, K. (2003) The effect of catch crops on sulphate leaching and availability of S in the succeeding crop. In: Davidian, J.C.; Grill, D.; De Kok, L.J.; Stulen, H.; Hawkesford, M.J.; Schnug, E. and Rennenberg, H. (Eds.) Sulfur Transport and Assimilation in Plants: Regulation, Interaction and Signaling. Backhuys Publishers, pp. 205-207.

Eriksen, J. and Vinther, F.P. (2002) Nitrate leaching in grazed grasslands of different composition and age. In: MULTI-FUNCTION GRASSLANDS – Quality Forages, Animal Products and Landscapes . European Grassland Federation, pp. 682-683.

Hornischer, Uwe (2006) Einsatz und Bedeutung organischer Handelsdünger im ökologischen Gemüsebau. [fertilizers for organic horticulture.] In: KTBL, (Ed.) Verwertung von Wirtschafts- und Sekundärrohstoffdüngern in der Landwirschaft - Nutzen und Risiken. Schrift, no. 444. KTBL Darmstadt, pp. 133-144.

Kolbe, Hartmut (2010) Phosphor und Kalium im ökologischen Landbau – aktuelle Probleme, Herausforderungen, Düngungsstrategien. [Phosphorus and potassium in organic farming - current problems, challenges, fertilization strategies.] In: Bundesarbeitskreis Düngung (BAD), Frankfurt/Main (Ed.) Phosphor- und Kaliumdüngung – brauchen wir neue Düngekonzepte? . Tagung des Verbandes der Landwirtschaftskammern (VLK) und des Bundesarbeitskreises Düngung (BAD), no. April 2010 in Würzburg. BAD, Frankfurt/Main, pp. 117-137.

Koller, Martin; Alföldi, Thomas; Siegrist, S. and Weibel, Franco (2004) A Comparison of Plant and Animal Based Fertiliser for the Production of Organic Vegetable Transplants. In: Nicola, S.; Nowak, J. and Vavrina, C.S. (Eds.) ISHS Acta Horticulturae 631: XXVI International Horticultural Congress: Issues and Advances in Transplant Production and Stand Establishment Research. International Society for Horticultural Sience (ISHS), pp. 209-215.

Köpke, Prof. Dr. Ulrich (2006) Bedeutung der Wirtschafts- und Sekundärrohstoffdünger für den ökologischen Landbau. [Manure and secundary raw material fertilizers for organic farming.] In: KTBL, (Ed.) Verwertung von Wirtschafts- und Sekundärrohstoffdüngern in der Landwirschaft - Nutzen und Risiken. Schrift, no. 444. KTBL Darmstadt, pp. 39-50.

Kristensen, Hanne L. and Thorup-Kristensen, Kristian (2008) Roots below one meters depth are important for nitrate uptake by annual crops. [Rødder under én meters dybde er vigtige for et-årige afgrøder's optagelse af nitrat.] In: Ma, L.; Ahuja, L.R. and Bruulsema, T.W. (Eds.) Quantififying and understanding plant Nitrogen uptake for systems modeling (ISBN 13:978-1-4200-5295-4). CRC Press, chapter 11, pp. 245-258.

Mayer, Dr. Jochen (2006) Einsatzstrategien für Wirtschafts- und Sekundärrohstoffdünger im ökologischen Landbau. [How to use manure and secundary raw material fertilizers for organic farming.] In: KTBL, (Ed.) Verwertung von Wirtschafts- und Sekundärrohstoffdüngern in der Landwirschaft - Nutzen und Risiken. Schrift, no. 444. KTBL Darmstadt, pp. 115-132.

Olesen, J.E.; Sørensen, P.; Thomsen, I.K.; Eriksen, J.; Thomsen, A.G. and Berntsen, J. (2004) Integrated nitrogen input systems in Denmark. In: Mosier, A.R.; Syers, J.K. and Freney, J.R. (Eds.) Agriculture and the nitrogen cycle: assessing the impacts of fertilizer use on food production and the environment. SCOPE, no. 65. Island Press, , chapter 9, pp. 129-140.

Palm, C.A.; Machado, P.L.O.A.; Mahmood, T.; Melillo, J.; Murrell, S.T.; Nymangara, J.; Scholes, M.; Sisworo, E.; Olesen, J.E.; Pender, J.; Stewart, J. and Galloway, J.N. (2004) Societal responses for addressing nitrogen fertilizer needs: Balancing food production and environmental concerns. In: Mosier, A.R.; Syers, J.K. and Freney, J.R. (Eds.) Agriculture and the nitrogen cycle: assessing the impacts of fertilizer use on food production and the environment. SCOPE, no. 65. Island Press, chapter 5, pp. 71-89.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) The Danish organic crop rotation experiment for cereal production 1997-2004. In: Raupp, J.; Pekrun, C.; Oltmanns, M. and Köpke, U. (Eds.) Long-term Field Experiments in Organic Farming. ISOFAR (International Society of Organic Agriculture Research) Scientific Series. Verlag Dr. Köster, pp. 117-134.

Raupp, Joachim and Oltmanns, Meike (2006) Soil properties, crop yield and quality with farmyard manure with and without biodynamic preparations and with inorganic fertilizers. In: Raupp, Joachim; Pekrun, Carola; Oltmanns, Meike and Köpke, Ulrich (Eds.) Long-term Field Experiments in Organic Farming.. ISOFAR Scientific Series, no. 1. Verlag Dr. Köster, Berlin, pp. 135-155.

Raupp, Dr Joachim (2001) Manure fertilization for soil organic matter maintenance and its effects upon crops and the environment, evaluated in a long-term trial. In: Rees, PhD R.M.; Ball, PhD B.C.; Campbell, PhD C.D. and Watson, PhD C.A. (Eds.) Sustainable Management of Soil Organic Matter. CABI Publishing, chapter 4.10, pp. 301-308.

Refsgaard, Karen; Jenssen, Petter D. and Magid, Jakob (2006) Possibilities for closing the urban rural nutrient cycles. In: Halberg, N.; Knudsen, M.T. and Kristensen, E.S. (Eds.) Global Development of Organic Agriculture: Challenges and Prospects. CaB International, chapter 7, pp. 181-214.

Soyergin, Serap; Atak, Arif; Uysal, Erdinç and Çelikel, Fisun Gül (2011) Yalova Koşullarında Organik Kivi Yetiştiriciliğinde Kullanılan Farklı Bitki Besleme Uygulamalarının Verim ve Kaliteye Etkisi. [Investıgatıons On The Possıbılıtıes Of Ecologıcal Kıwı Productıon In The Marmara Regıon.] In: Alay Vural, Ayşen (Ed.) Organik Tarım Araştırmaları 2005-2010. T.C. Tarım ve Köyişleri Bakanlığı , Ankara Turkey, pp. 169-174.

Soyergin, Serap; Uysal, Erdinç and Albayrak, Barış (2011) Zeytin Kekinin (Pirinanın) Kompost Yapım Teknikleri ve Organik Gübre Olarak Kullanım Olanaklarının Araştırılması. [COMPOSTING OLIVE-MILL BY-PRODUCT (OLIVE CAKE).] In: Alay Vural, Aysen (Ed.) Organik Tarım Araştırma Sonuçları2005-2010. T. C. Tarım ve Köyişleri Bakanlığı, Ankara Turkey, pp. 163-168.

Soyergin, Serap; Yalçınkaya, Erol; Aktepe Tangu, Nesrin; Erenoğlu, Burhan; Uysal, Erdinç and Çelikel, Fisun Gürsel (2010) Yalova Koşullarında Organik Bursa Siyahı İncir Yetiştiriciliğinde Kullanılan Farklı Bitki Besleme Uygulamalarının Verim ve Kaliteye Etkisi. [Effect Of Dıfferent Plant Nutrıtıonal Applıcatıons On Yıeld And Qualıty In Organıcal Bursa Siyahı Growıng On Yalova Ecologıcal Condıtıons.] In: Alay Vural, Ayşen (Ed.) Organik Tarım Araştırma Sonuçları 2005-2010. T. C. Tarım ve Köyişleri Bakanlığı, Ankara Turkey, pp. 175-182.

Thorup-Kristensen, Kristian (2005) Kapitel 1: Grøngødning og efterafgrøder, Kapitel 2: Grøngødningens biologi, og Kapitel 3: Grøngødningens virkninger. In: Bjerg, Anna-Christa (Ed.) Grøngødning, efterafgrøder og dækafgrøder. Landbrugsforlaget, chapter 1-2-3, pp. 1-37.

Vinther, F.P. (2005) Below-harvest biomass and N2 fixation in grass-clover at different cutting frequencies. In: Frankow-Lindenberg, B. (Ed.) Adaption and Management of Forage Legumes - Strategies for improved Reliability in mixed Swards. Swedish University of Agricultural Sciences, Uppsala, pp. 187-190.

Znaor, Darko (2009) Vulnerability of Water Resources. In: Landau, S; Legro, S and Vlašić, S (Eds.) A Climate for Change: Climate Change and its Impacts on Society and Economy in Croatia: UNDP’s National Human Development Report 2008. United Nations Development Programme, Country Office Croatia, Zagreb, pp. 95-118.

Thesis

Andersen, Mette Klindt (2005) Competition and complementarity in annual intercrops - the role of plant available nutrients. Thesis, The Royal Veterinary and Agricultural University, Copenhagen, Denmark, Department of Soil Science. Samfundslitteraur Grafik, Frederiksberg, Copenhagen.

Beji, Sadreddine (2003) Effet de la fertilisation organique à base de farine de poisson sur 3 types de tomates conduite selon le mode biologique. [Effect of organic fertilization based on fish meal on 3 varieties of tomato in organic farming.] Thesis, IAMB Mediterranean Agronomic Institute of Bari, Organic Farming. Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies), no. 329. . [Unpublished]

Bilen, Emre (2008) Evaluation of pre-crops and fertilization on organic zucchini under Mediterranean conditions: case of Turkey. Masters thesis, Mediterranean Agronomic Institute of Bari, Mediterranean Organic Agriculture. , Bari, Italy.

Boissinot, François (2009) Comment optimiser l’implantation de couverts de légumineuses fourragères sous culture de blé en agriculture biologique ? Incidence sur la maîtrise des adventices et les performances agronomiques du blé -. [How to optimize a forage legume/winter wheat intercropped system in organic farming? Impact on weed management and wheat yield performances.] Masters thesis, ESA-Angers; ISARA-Lyon. . [Completed]

CAVOSKI, Ivana (2004) The effects of compost and compost extract on soil properties and lettuce growth. [Les effets du compost et des extraits de compost sur les propriétés du sol et sur la croissance de la laitue.] Thesis, IAMB Mediterranean Agronomic Institute of Bari, Organic Farming. Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies), no. 352. . [Unpublished]

Cretin, Rémi (2009) Implantation d’un couvert de légumineuse fourragère en association avec un blé d’hiver conduit en agriculture biologique en Rhône-Alpes : diagnostic plurifactoriel des effets de l’implantation et d’une fertilisation de printemps sous différentes conditions pédoclimatiques. [Introduction of a legume cover in an organic winter wheat in Rhône-Alpes region (France): multifactorial diagnosis of the effet of this implantation and of a spring fertilization on various soil and climate conditions.] Thesis, University of Lyon; ISARA-Lyon. . [Completed]

Duarte, Edivânia Maria Gourete (2007) Ciclagem de nutrientes por àrvores em sistemas agroflorestais na Mata Atlântica. [Nutrient cycling by trees in agroforestry systems in the Atlantic Forest.] Masters thesis, Universidade Federal de Viçosa. , Viçosa.

Govasmark, Espen (2005) Trace element status of soil and organically grown herbage in relation to animal requirements. [Sporstoffer i jord og økologisk dyrket grovfôr vurdert i henhold til dyrenes behov.] Thesis, Norwegian University of Life Sciences, Department of Plant- and Environmental Sciences. Norwegian University of Life Sciences.

HAFID, Hicham (2002) Effet de la fertilisation organique sur la production de semences biologiques de deux variétés du haricot vert et sur les propriétés chimiques du sol. [Effect of organic fertilisation on the production of organic seeds of two snap bean varieties and on the soil chemical properties.] Thesis, IAMB Mediterranean Agronomic Institute of Bari, Organic Farming. Tesi Master of Science, no. 283. . [Unpublished]

HAMDY EL NAGGAR, Ahmed (2002) Effect of using water extracts of compost and organic materials on soil fertility and plant nutrition. [Effets de l’utilisation d’extraits liquides de compost et de substances organiques sur la fertilité du sol et la nutrition des plantes.] Thesis, Mediterranean Agronomic Institute of Bari, Organic Agriculture. Tesi Master of Science, no. 274. . [Unpublished]

Larsen, Thomas (2007) Unravelling collembolan life belowground: Stoichiometry, metabolism and release of carbon and nitrogen. Thesis, Plant Nutrition and Soil Fertility Laboratory, University of Copenhagen and Dept. of Terrestrial Ecology, NERI. National Environmental Research Institute. National Environmental Research Institute © University of Aarhus - Denmark.

Lefèvre, Vincent (2009) Les conséquences des techniques de travail du sol sur la fertilité des sols conduits en agriculture biologique. [Consequences of soil tillage techniques on soil fertility in organic agriculture.] Masters thesis, ENITA-Clermont; ISARA-Lyon. . [Completed]

LI, Mrs Zhifang (2002) New eco-compatible technologies of durum wheat production: a case study on winter wheat living mulch by sub clover in Southern Italy. [Nouvelles technologies éco-compatibles pour la production de blé dur: cas d’étude sur un mulching de trèfle souterrain dans une parcelle de blé en Italie du Sud.] Thesis, IAMB - Mediterranean Agronomic Institute of Bari, Organic Agriculture. Tesi Master of Science, no. 273. . [Unpublished]

Løes, Anne-Kristin (2003) Studies of the availability of soil phosphorus (P) and potassium (K) in organic farming systems, and of plant adaptations to low P- and K-availability. [Undersøkelser av tilgjengeligheten av P og K i jorda i økologiske dyrkingssystemer, og av planters tilpasning til lav tilgjengelighet av disse næringsstoffene.] Thesis, Agricultural University of Norway, Department of Soil and Water Sciences. Doctor Scientiarum Thesis, no. 2003: 29. Department of Soil and Water Sciences, Agricultural University of Norway, P.O.Box 5028, N-1432 Ås.

Madelin, Camille (2010) Améliorer l’autonomie azotée des systèmes céréaliers en agriculture biologique : Incidence de l’association blé-légumineuses fourragères sur la qualité technologique du blé. [Improving nitrogen autonomy of organic cereal systems: incidence of the association of wheat and forage legumes on wheat grain quality.] Masters thesis, ENITA-Clermont; ISARA-Lyon. . [Completed]

Nykänen, Arja (2008) Nitrogen dynamics of organic farming in a crop rotation based on red clover (Trifolium pratense) leys. Thesis, MTT Agrifood Research Finland. Agrifood Research Reports, no. 121. .

Pedersen, Anders (2008) Modelling crop root development and nitrate uptake. Thesis, The Faculty of Life Sciences, University of Copenhagen, Department of Agricultural Sciences. . [Unpublished]

Pietsch, Gabriele (2004) N2-Fixierungsleistung und Wasserverbrauch von Futterleguminosen im Ökologischen Landbau unter den klimatischen Bedingungen der pannonischen Region Österreichs. [Biological nitrogen fixation and water use of fodder legumes in organic farming under site conditions of the pannonical region in Austria.] Thesis, Institut für Ökologischen Landbau / Universität für Bodenkultur, Department für Nachhaltige Agrarsysteme. .

Poitral, Chloé (2009) Gestion de la nutrition azotée du blé conduit en Agriculture Biologique et incidences sur le rendement et la teneur en protéines des grains. Contribution croisée de légumineuses semées sous couvert et d’une fertilisation de printemps. [Nitrogen management of organic wheat: effects on grain yield and Grain Protein content. Crossing contribution of undersown legumes and spring N fertilization.] Masters thesis, ENITA-Bordeaux; ISARA-Lyon. . [Completed]

Rasmussen, Jim (2007) Below ground C and N transformation processes in perennial grass-clover mixtures. Thesis, Faculty of Life Sciences, University of Copenhagen, Department of Agricultural Sciences. .

Schmidt, Dr Harald (1997) Viehlose Fruchtfolge im Ökologischen Landbau - Auswirkungen systemeigener und systemfremder Stickstoffquellen auf Prozesse im Boden und die Entwicklung der Feldfrüchte. [Organic, arable crop rotation - effects of internal and external nitrogen sources on soil processes and the development of crops.] Thesis, Universität Gesamthochschule Kassel, Fachbereich Landwirtschaft, internationale Agrarentwicklung und ökologische Umweltsicherung. .

Seibt, Perry (2007) Anwendung einer neuen standortabhängigen Methode zur Humusbilanzierung an sächsischen Dauertestflächen und Vergleich mit anderen üblichen Methoden zur Feststellung des Versorgungsgrades mit organischer Substanz im Hinblick auf Sicherung der Nachhaltigkeit der Betriebe im konventionellen und ökologischen Landbau. Thesis, TU Dresden, Fakultät Forst-, Geo- und Hydrowissenschaften, Institut für Bodenkunde und Standortlehre. . [Unpublished]

T. AL DAMRAT, Rasha (2005) The role of ectomychorrizal fungi in nitrogen acquisition in California oak woodlands. [Le rôle des champignons ectomycorhiziens dans l’acquisition de l’azote dans la chênaie en Californie.] Thesis, IAMB Mediterranean Agronomic Institute of Bari, Organic farming. Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies), no. 402. . [Unpublished]

Ylivainio, Kari (2009) Environmentally benign Fe chelates in plant nutrition. PhD thesis, MTT Agrifood Research Finland. MTT Science, no. 5. MTT Agrifood Research Finland.

Research Programme description

{ Programme part} EcoFINDERS: Ecological Function and Biodiversity Indicators in European Soils. Runs 2011 - 2014. Programme Leader(s): Lemanceau, Coordinato Philippe.

{ Programme part} Formas I: Ekologisk jordbruks- och trädgårdsproduktion, Formasprogrammet 2001-2004 - markvetenskap. [Organic agricultural and horticultural production, Formas programme 2001-2004 - Soil.] Runs 2001 - 2004.

{Programme} Jord, planter og husdyr (JORDBRUK). [Soil, plants and livestock (AGRICULTURE).] Runs 2000 - 2005. Programme Leader(s): Danielsen, Kristin.

Project description

{Project} Erträge, Produktqualität und organische Substanz im Boden bei langjähriger Rottemistdüngung mit und ohne Anwendung der biologisch-dynamischen Präparate sowie bei Mineraldüngung. [Yields, product quality and organic matter in the soil with long-term application of farmyard manure with and without biodynamic preparations compared to mineral fertilization.] Runs 1980 - 2009. Project Leader(s): Raupp, Dr Joachim, Institut für Biologisch-Dynamische Forschung (IBDF).

{Project} Anbau von Mischkulturen mit Ölpflanzen zur Verbesserung der Flächenproduktivität im ökologischen Landbau - Nährstoffaufnahme, Unkrautunterdrückung, Schaderregerbefall und Produktqualitäten. Runs 2004 - 2006. Project Leader(s): Paulsen, Dr. Hans Marten, Bundesforschungsinstitut für Ländliche Räume, Wald und Fischerei.

{Project} Bestell- und Erntetechnik im Ackerbau. [Tillage, seeding and harvesting technique in arable farming.] Runs 2003 - 2007. Project Leader(s): Anken, Thomas, Agroscope FAT Taenikon, Swiss Federal Research Station for Agricultural Economics and Engineering, Taenikon, CH-8356 Ettenhausen.

{Project} Dikväveoxidemissioner från ekologisk odling styrda av kväveeffektiviteten i systemet. [Nitrous oxide emissions from organic farming driven by nitrogen use efficiency.] Runs 2004 - 2007. Project Leader(s): Klemedtsson, Leif, Göteborg University.

{Project} Einführung der Verfahren zur Humus- und N-Bilanzierung (BEFU-Erweiterung) in die Praxis unter besonderer Berücksichtigung von Feldfutter- und Stilllegungsflächen. [Introduction of nitrogen and humus balance methods (BEFU model) in organic farming practice with special consideration of field fodder and green fallow.] Runs 2004 - 2006. Project Leader(s): Kolbe, Dr. Hartmut and Köhler, Brigitte, Sächsische Landesanstalt für Landwirtschaft.

{Project} Entwicklung einer praxisanwendbaren Methode der Humusbilanzierung im ökologischen Landbau (Verbundvorhaben). [Development of a method for humus balancing in organic farming for application under practice conditions.] Runs 2005 - 2008. Project Leader(s): Leithold, Dr. Günter, Justus-Liebig-Universität Gießen.

{Project} KLMS: Entwicklung neuer Strategien zur Mehrung und optimierten Nutzung der Bodenfruchtbarkeit (Verbundvorhaben). [Developing strategies for maintaining and increasing soil fertility: cropping systems combining pulses with mulch husbandry.] Runs 2008 - 2011. Project Leader(s): Köpke, Prof. Dr. Ulrich, Rheinische Friedrich-Wilhelms-Universität Bonn.

{Project} KLMS: Entwicklung neuer Strategien zur Mehrung und optimierten Nutzung der Bodenfruchtbarkeit: Anbauverfahren von Körnerleguminosen mit Direktsaat und konservierender Bodenbearbeitung (Verbundvorhaben). [Nutrient supply for optimized N2 fixation and productivity of pulses.] Runs 2008 - 2011. Project Leader(s): Goldbach, Prof. Dr. Heiner and Scherer, Prof. Dr. Heinrich , Rheinische Friedrich-Wilhelms-Universität Bonn.

{Project} Erstellung und Prüfung von Verfahren zur Abschätzung des N-Umsatzes im Rahmen der Humusreproduktion im ökologischen Landbau. [Development and verification of methods for estimating the nitrogen turnover in organic farming on the basis of data from long-term experiments.] Runs 2005 - 2006. Project Leader(s): Kolbe, Dr. Hartmut and Ringe, Dr. Horst, Sächsische Landesanstalt für Landwirtschaft.

{Project} ProPIG: Farm specific strategies to reduce environmental impact by improving health, welfare and nutrition of organic pigs. Runs 2011 - 2014. Project Leader(s): Leeb, Dr. Christine, University of Natural ressources and Life Sciences (BOKU) .

{Project} FERTIAGRIBIO: Fertilisation en agriculture biologique. [organic farming fertilization.] Runs 2004 - 2005. Project Leader(s): Nicolardot, Bernard and Leclerc, Blaise, INRA & ACTA.

{Project} Impact environnemental ( sur l’air et l’eau) des systèmes d’élevage de ruminants en agriculture biologique – Evaluation des émissions de N -(NH3, N2O, NO3 ) , CH4, , CO2-énergie directe et indirecte. [Analysing the impact of organic farming on the environment (in breeding production).] Runs 2005 - 2006. Project Leader(s): Dulphy, Jean-Pierre and Hacala, Sylvie.

{Project} BYGGRO: Improving barley yields in organic stockless farming systems through innovations in green manure management. [Økte byggavlinger i økologisk drift gjennom bedret grønngjødselhandtering.] Runs 2008 - 2011. Project Leader(s): Hansen, Sissel, Bioforsk Norwegian Institute for Agricultural and Environmental Research.

{Project} Improving the sustainability of crop nutrition in horticultural soil. Runs 2004 - 2008. Project Leader(s): Lennartson, Margi, Henry Doubleday Research Association (HDRA).

{Project} Kaliumdynamiken i jordbruksmark: kvantifiering av källor och sänkor och identifiering av jordar (områden) som behöver K-tillskott. [K-dynamics in agricultural soils: quantifying sources and sinks and identifying soils (areas) in need of K-supplementation.] Runs 2004 - 2007. Project Leader(s): Öborn, Ingrid, Swedish University of Agricultural Sciences, SLU.

{Project} Klimawirkungen und Nachhaltigkeit ökologischer Betriebssysteme - Untersuchungen in einem Netzwerk von Pilotbetrieben. [Climate effects and sustainability of organic agriculture.] Runs 2008 - 2011. Project Leader(s): Hülsbergen, Prof. Dr. Kurt-Jürgen, Technische Universität München, D-Freising-Weihenstephan.

{Project} Klimawirkungen und Nachhaltigkeit ökologischer Betriebssysteme - Untersuchungen in einem Netzwerk von Pilotbetrieben. [Climate effects and sustainability of organic agriculture.] Runs 2008 - 2011. Project Leader(s): Rahmann, Prof. Dr. Gerold, Johann Heinrich von Thünen Institut, D-Westerau.

{Project} Kohlenstoffflüsse und mikrobielle Diversität. [Soil carbon fluxes and microbial diversity.] Runs 1995 - 2006. Project Leader(s): Fliessbach, Andreas, Research Institute of Organic Agriculture (FiBL), CH-5070 Frick.

{Project} Ökologische Beurteilung und Optimierung von Hofdüngereinsatz und Stickstoffdüngung. [Ecological assessment and optimization of farmyard manure application and nitrogen fertilization.] Runs 2003 - 2007. Project Leader(s): Richner, Walter, Agroscope FAL Reckenholz, Swiss Federal Research Station for Agroecology and Agriculture, CH-8046 Zurich, E-mail: info@fal.admin.ch.

{Project} Kvantifiering av mineralvittringens bidrag till grödornas kaliumförsörjning på olika typer av jordbruksmark. [Cycling of plant nutrients, quantification of the contribution of mineral weathering to the supply of potassium to plants on different types of agricultural land.] Runs 2002 - 2004. Project Leader(s): Öborn, Ingrid, Swedish University of Agricultural Sciences, SLU.

{Project} Kvävefixering i rödklöverrika vallar, kvantifiering av kväve i hela växten samt kväve utsöndrat från rötter. [Nitrogen fixation in green leys, quantification of total below- and above ground N.] Runs 2005 - 2007. Project Leader(s): Dahlin, Sigrun, Swedish University of Agricultural Sciences, SLU.

{Project} Kväveförsörjning av ekologiska höstoljeväxter - en studie av olika kvävekällor, tillförseltidpunkter och myllningstekniker. [Nitrogen supply to organic winter oilseed rape - nitrogen sources, time of application and incorporation techniques.] Runs 2005 - 2007. Project Leader(s): Stenberg , Maria, Swedish University of Agricultural Sciences, SLU.

{Project} Kvävemineraliseringsförlopp efter gödsling med organiska gödselmedel vid olika tidpunkter. [The nitrogen mineralization process after application of organic fertilizers at different times of the year.] Runs 2005 - 2007. Project Leader(s): Delin, Sofia and Lindén, Börje, Swedish University of Agricultural Sciences, SLU.

{Project} Optimisation of nitrogen mineralisation from winter cover crops and utilisation by subsequent crops. Runs 1995 - 1999. Project Leader(s): Unspecified, , Henry Doubleday Research Association.

{Project} Phosphat-Mobilisierung durch Haupt- und Zwischenfrüchte nach Düngung von weicherdigem Rohphosphat im ökologischen Landbau. [Phosphate mobilization by cultivating main and catch crop after application of mineral phosphorus fertilizer in organic farming.] Runs 2002 - 2003. Project Leader(s): Schubert, Prof. Dr. Sven, Justus-Liebig-Universität Gießen.

{Project} Praxiseinführung und Evaluierung eines Kalkulationsschemas zur bedarfsgerechten N-Düngung im ökologischen Freilandgemüsebau. [Model for demand-oriented N-fertilisation in organic vegetable production: Introduction into agricultural practice and evaluation.] Runs 2002 - 2003. Project Leader(s): Laber, Dr. Hermann, Sächsische Landesanstalt für Landwirtschaft.

{Project} FertOrtoMedBio: Produzione ed utilizzo di substrati per la vivaistica, miglioramento delle teniche di gestione del suolo e delle strategie di fertilizzazione dei sistemi ortofrutticoli mediterranei da reddito condotti con il metodo dell' agricoltura biologica. [Production and utilization of nursery substrates, improvement of soil management techniques and fertilization strategies of Mediterranean fruit and vegetable production systems managed with organic farming method.] Runs 2006 - 2008. Project Leader(s): Sequi, P.; Canali, S. and Tittarelli, F., CRA - ISNP.

{Project} Putsningens påverkan på N2-fixering, rhizodeposition, växtmaterialkvalitet och nedbrytning av leguminoser. [The effect of cuttings on nitrogen fixation, rhizodeposition, plant material quality and decomposition of legumes.] Runs 2002 - 2004. Project Leader(s): Dahlin, Sigrun, Swedish University of Agricultural Sciences, SLU.

{Project} PhosphorusLegumesDiversity: Rolle des Phosphors als Steuerungsgröße des Stickstoffertrages und der Phytodiversität ökologisch bewirtschafteter Dauergrünlandbestände. [Role of phosphorus as a key component for managing grasslands N-yield and phytodiversity in organic farming.] Runs 2013 - 2016. Project Leader(s): Müller, Dr. agr. Jürgen, Universität Rostock, Agrar- und Umweltwissenschaftliche Fakultät, D-Rostock.

{Project} RoCo: Roots and Compost, - organic crop production under reduced nutrient availability. [Rødder og kompost, - økologisk dyrkning med begrænset næringsstoftilgængelighed.] Runs 2011 - 3013. Project Leader(s): Kristensen, Kristian Thorup.

{Project} sulfru: Sicherung des Ertragspotentials von Luzerne-Kleegrasbeständen durch Verbesserung des aktuellen Schwefelversorgungszustandes ökologisch bewirtschafteter Flächen - Situation und Bedeutung unter Praxisbedingungen. [Ensuring of the yield potential of lucerne-clover-grass-mixtures by improving the current sulphur availability on ecologically managed areas – situation and importance under practical conditions.] Runs 2011 - 2014. Project Leader(s): Leithold, Prof. Dr. Günter, Justus-Liebig-Universität Gießen.

{Project} BODENFRUCHTBARKEIT: Steigerung der Wertschöpfung ökologisch angebauter Marktfrüchte durch Optimierung des Managements der Bodenfruchtbarkeit (Verbundvorhaben). [Enhancing the economic value of organically produced cash crops by optimizing the management of soil fertility.] Runs 2008 - 2011. Project Leader(s): Schmidtke, Prof. Dr. Knut, Hochschule für Technik und Wirtschaft Dresden, Fakultät Landbau/Landespflege, D-Dresden.

{Project} BODENFRUCHTBARKEIT: Steigerung der Wertschöpfung ökologisch angebauter Marktfrüchte durch Optimierung des Managements der Bodenfruchtbarkeit (Verbundvorhaben) Teilprojekt (WP5 und WP6). [Enhancing the economic value of organically produced cash crops by optimizing the management of soil fertility.] Runs 2008 - 2011. Project Leader(s): Finckh, Prof. Dr. Maria, Universität Kassel, D-Witzenhausen.

{Project} Stickstoff-Auswaschungsverluste und Nachfruchteffekte von Futterleguminosen (Schnitt- und Grünbrache-Nutzung) auf Getreide-Nachfrüchte im Ökologischen Landbau unter pannonischen Standortbedingungen in Ostösterreich. [Nitrogen losses due to leaching and beneficial effects on subsequent cereals crops of forage and green manure legumes in organic farming under site conditions of the Pannonical region in Eastern Austria.] Runs 2000 - 2004. Project Leader(s): Freyer, Dr. Bernhard, Department für Nachhaltige Agrarsysteme BOKU Wien.

{Project} Svaveltillgängligheten för jordbruksgrödor: betydelsen av stallgödsel, markens organiska material och mineralgödselmedel i konventionell och ekologisk odling. [The sulphur availability to arable crops: the role of farmyard manure, soil organic matter and mineral fertilizers in conventional and organic farming systems.] Runs 2004 - 2007. Project Leader(s): Nilsson, Ingvar, Swedish University of Agricultural Sciences, SLU.

{Project} Umsatzprozesse und Optimierung der Nutzungseffizienz von Kompost und Hofdüngern im biologischen Landbau. [Turnover processes and optimization of the efficiency of compost and farmyard manure in organic farming.] Runs 2003 - 2007. Project Leader(s): Mayer, Jochen, Agroscope FAL Reckenholz, Swiss Federal Research Station for Agroecology and Agriculture, CH-8046 Zurich, E-mail: info@fal.admin.ch.

{Project} Untersuchungen zum Einsatz von Blattdüngern im ökologischen Obstbau - Status Quo Analyse und Prüfung von Blattdüngern. [Foliar fertilizers in organic fruit growing - analysis of status quo and testing of different products.] Runs 2002 - 2003. Project Leader(s): Belz, Jürgen and Rueß, Dr. Franz, Staatliche Lehr und Versuchsanstalt für Wein- und Obstbau, D-Weinsberg.

{Project} Wasserschutz im Ökologischen Landbau: Leitfaden für Land- und Wasserwirtschaft. [Water protection in organic farming - manual for the farming and water supply sector.] Runs 2007 - 2009. Project Leader(s): Haas, Dr. habil. Guido, AgrarIngenieurbüro Haas, D-Bad Honnef.

{Project} Wirkung verschiedener organischer Mulchmaterialien auf den Nährstoff- und Wasserhaushalt des Bodens - Quantifizierung der Bedeutung für den ökologischen Landbau. [Reaction of different organic mulch materials on the nitrogen and water supply in soil - quantification of the meaning for organic farming.] Runs 2002 - 2003. Project Leader(s): Müller, Prof. Dr. Siegfried, Fachhochschule Erfurt.

{Project} Ytkaraktärisering av fosforhalter på markpartiklar med fotoelektronspektroskopi (ESCA) av jordar i olika jordbrukssystem. [Electron spectroscopy for chemical analysis to characterise phosphorus at soil particle surfaces of different origin and agricultural management.] Runs 2002 - 2005. Project Leader(s): Hylander, Lars, Uppsala University.

Research facility description

{Facility} ADAS: Field-scale study of sustainability of stockless organic arable production. Facility Leader(s): Cormack, Bill, ADAS.

{Facility} DOK: DOK-Langzeit-Versuch. [DOK long-term experiment.] Facility Leader(s): Mäder, Paul, Research Institute of Organic Agriculture FiBL.

{Facility} Einfluss von biologisch-dynamischen Präparaten, Düngung und Bodenbearbeitung auf Bodenfruchtbarkeit und Ertrag. [Effects of biobynamic preparations, fertilisation and soil management on soil fertility and yields.] Facility Leader(s): Berner, Alfred, Research Institute of Organic Agriculture (FiBL), CH-5070 Frick.

{Facility} EFRC: Elm Farm Research Centre: Wakelyns Agroforestry (experimental farm). Facility Leader(s): Wolfe, Martin, Elm Farm Research Centre.

{Facility} Palap9: Evaluation of soil fertility, soil quality, nutritional status and fruit quality in a Citrus orchard in Southern Italy. Start 1995. Facility Leader(s): Roccuzzo, Dr Giancarlo and Canali, Dr Stefano, CRA-Istituto Sperimentale per l'Agrumicoltura; CRA-Istituto Sperimentale per la Nutrizione delle Piante.

{Facility} Informe: Finca Experimental La Higueruela (Spain). [Report: La Higueruela experimental farm (Spain).] Facility Leader(s): Lacasta Dutoit, Mr. Carlos, Spanish National Research Council (CSIC).

{Facility} Langzeitversuch Darmstadt. [Long-term trial Darmstadt.] Start 1980. Facility Leader(s): Raupp, Dr Joachim, IBDF - Institut für Biologisch-Dynamische Forschung e.V..

{Facility} University of Nottingham: stockless organic experiment. Facility Leader(s): Sparkes, Debbie, University of Nottingham.

Teaching resource

Carter, Mette S. (2012) Find energien - fremtiden kommer. [Find the energy - the future is coming.] .

Web product

Eriksen, J. (2004) Svovl i økologiske sædskifter. . Online at <http://www.foejo.dk/enyt2/enyt/jan04/svovl.html>.

Kolbe, Hartmut (2005) Einsatz von Algen-Präparaten als Pflanzenstärkungsmittel im konventionellen und ökologischen Land- und Gartenbau? [Use of seaweed extracts as bio-stimulants in conventional and horticultural crop production?] .

Mejnertsen, Peter (2004) Benyt efterafgrøder i økologisk jordbrug. [Use catch crops in organic farming.] . Online at <http://www.lr.dk/planteavl/diverse/oe_vaerk_efterafgr.htm>.

Morgner, Marion; Fliessbach, Andreas and Mäder, Paul (2003) DOK-Versuch. [The DOK-Trial.] . Online at <http://www.oekolandbau.de/index.cfm?000C39F26BAE1D6FB99D01A5C0A8E066>.

Schjønning, P. and Munkholm, L.J. (2004) Organisk stof i jord - hvor meget er nok og hvor lidt er kritisk? . Online at <http://www.foejo.dk/enyt2/enyt/april04/ostof.html>.

Schmutz, Res; Koller, Martin; Morgner, Marion; Fichtenbusch, Lars and Puffarth, Souila (2004) Fruchtfolge-Planer. [Rotation planning tool.] . Online at <http://www.oekolandbau.de/index.cfm/000E1791DE101FB89CA16521C0A8D816>.

Tersbøl, Michael (2004) Betydning af efterafgrøder:erfaringer fra sædskifteforsøgene. [Impact of catch crops:experiences from crop rotation trials.] . Online at <http://www.lr.dk/planteavl/diverse/oekovaerk_betyd_efter.htm>.

Tersbøl, Michael (2004) Kalium til økologiske afgrøder. [Potasium in organic crops.] . Online at <http://www.lr.dk/planteavl/diverse/oekovaerk_kaliumforsoeg.htm>.

Tersbøl, Michael (2004) Udbytte og økonomi i sædskifter – erfaringer fra sædskifteforsøgene. . Online at <http://www.lr.dk/planteavl/diverse/oekovaerk_udbyt_okonomi.htm>.

Image

Castro, Cristina Maria de and Devide, Antonio Carlos Pries (2013) Produção de Jatropha curcas em sistema agroecológico. [Production of Jatropha curcas in agro-ecological system.] APTA - Polo Regional Vale do Paraíba, Setor de Fitotecnia.

Other

Andersen, Morten (2009) Mikroberne spiser gerne op. , Årsskrift for Det Frie Forskningsråd - Teknologi og Produktion.

Dhoore, Koen (2013) Biobedrijfsnetwerken groenten - akkerbouw. ILVO - proefvelden niet-kerende grondbewerking en compostsite. .

Dhoore, Koen (2012) Biobedrijfsnetwerk akkerbouw - vollegrondsgroenten Proefveldbezoek Tilman-org Project - ILVO Resultaten onderzoek niet-kerende grondbewerking en bemesting. .

Staps, Sjef (2011) kansen voor pluimveemest. [Chances for poultry manure.] bioKennis.

Thorup-Kristensen, Kristian (2011) RoCo 2011-2013: Rødder og kompost, økologisk dyrkning med begrænset tilgængelighed af næringsstoffer. [RoCo 2011-2013: Roots and compost, organic crop production with limited access to plant nutrients.] ICROFS.

TILMAN-ORG, Partnership (2013) Gereduceerde bodembewerking en groenbemesters. Integreren van gereduceerde bodembewerking en groenbemesters voor duurzame biologische teeltsystemen. .

VEDIE, Hélène (2009) Fertilisation de la courge de plein champ en AB. [Squash fertilization in organic farming in open field.] . [Submitted]

This list was generated on Tue Oct 21 03:38:54 2014 CEST.