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Subject Area: Nutrient turnover

Number of eprints: 483.

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

Raupp, Joachim; Pekrun, Carola; Oltmanns, Meike and Köpke, Ulrich, Eds. (2006) Long Term Field Experiments in Organic Farming. ISOFAR Scientific Series 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.

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

{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 19 August 1980 - 31 December 2007. Project leader(s): Raupp, Dr Joachim, Institut für Biologisch-Dynamische Forschung e.V. (IBDF). More information online at <http://www.biodynamic-research.net/forschungsfelder/langzeitversuche/plonearticlemultipage.2006-09-26.2874167065/versuchsaufbau>.

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.

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

{FACILITY} ADAS: Field-scale study of sustainability of stockless organic arable production.

{PROJECT} Anbau von Mischkulturen mit Ölpflanzen zur Verbesserung der Flächenproduktivität im ökologischen Landbau - Nährstoffaufnahme, Unkrautunterdrückung, Schaderregerbefall und Produktqualitäten. Runs 01 March 2004 - 31 October 2006. Project leader(s): Paulsen, Dr. Hans Marten, Bundesforschungsanstalt für Landwirtschaft. More information online at <http://www.bundesprogramm-oekolandbau.de/projekt_03oe113.html>.

{PROJECT} Ökologische Beurteilung und Optimierung von Hofdüngereinsatz und Stickstoffdüngung [Ecological assessment and optimization of farmyard manure application and nitrogen fertilization]. Runs 08 November 2003 - 31 December 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. More information online at <http://www.aramis-research.ch/d/15986.html?config=htdig.d&method=and&words=04.11.2.2&keywords=&matchesperpage=10&search_algorithm=exact%3A1%20substring%3A0.75%20accents%3A0.5&fostvalue=%28alle%29&nabsvalue=%28alle%29>.

{PROJECT} Bestell- und Erntetechnik im Ackerbau [Tillage, seeding and harvesting technique in arable farming]. Runs 11 November 2003 - 31 December 2007. Project leader(s): Anken, Thomas, Agroscope FAT Taenikon, Swiss Federal Research Station for Agricultural Economics and Engineering, Taenikon, CH-8356 Ettenhausen. More information online at <http://www.aramis-research.ch/d/16025.html?config=htdig.d&method=and&words=04.42.01.03&keywords=&matchesperpage=10&search_algorithm=exact%3A1%20substring%3A0.75%20accents%3A0.5&fostvalue=%28alle%29&nabsvalue=%28alle%29>.

{PROJECT} Dikväveoxidemissioner från ekologisk odling styrda av kväveeffektiviteten i systemet [Nitrous oxide emissions from organic farming driven by nitrogen use efficiency]. Runs 01 July 2004 - 30 June 2007. Project leader(s): Klemedtsson, Leif, Göteborg University.

{FACILITY} DOK: DOK-Langzeit-Versuch [DOK long term experiment]. More information online at <http://www.fibl.org/forschung/anbautechnik-einjaehrig/dok/index.php>.

{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 01 July 2004 - 31 December 2006. Project leader(s): Kolbe, Dr. Hartmut and Köhler, Brigitte, Sächsische Landesanstalt für Landwirtschaft. More information online at <http://www.smul.sachsen.de/de/wu/Landwirtschaft/lfl/fachinformationen/oeko_landbau/index_oeko_landbau.html>.

{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]. More information online at <http://www.fibl.org/forschung/anbautechnik-einjaehrig/bio-dyn/praeparateversuch.php>.

{PROGRAMME PART} Formas I: Ekologisk jordbruks- och trädgårdsproduktion, Formasprogrammet 2001-2004 - markvetenskap [Organic agricultural and horticultural production, Formas programme 2001-2004 - Soil]. Runs 01 July 2001 - 31 December 2004. More information online at <http://www.cul.slu.se/forskning/programoproj/formasprog.html>.

{FACILITY} EFRC: Elm Farm Research Centre: Wakelyns Agroforestry (experimental farm). More information online at <http://www.efrc.com>.

{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 01 August 2005 - 31 December 2006. Project leader(s): Kolbe, Dr. Hartmut and Ringe, Dr. Horst, Sächsische Landesanstalt für Landwirtschaft. More information online at <http://www.smul.sachsen.de/de/wu/Landwirtschaft/lfl/>.

{FACILITY} Palap9: Evaluation of soil fertility, soil quality, nutritional status and fruit quality in a Citrus orchard in Southern Italy..

{PROJECT} FERTIAGRIBIO: Fertilisation en agriculture biologique [organic farming fertilization]. Runs 01 January 2004 - 31 December 2005. Project leader(s): Nicolardot, Bernard and Leclerc, Blaise, INRA & ACTA. More information online at <http://www.itab.asso.fr/comm_agro.htm#fertiagribio>.

{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 01 January 2005 - 31 December 2006. Project leader(s): Dulphy, Jean-Pierre and Hacala, Sylvie.

{PROJECT} Improving the sustainability of crop nutrition in horticultural soil. Runs 01 April 2004 - 01 April 2008. Project leader(s): Lennartson, Margi, Henry Doubleday Research Association (HDRA).

{PROGRAMME} Jord, planter og husdyr (JORDBRUK) [Soil, plants and livestock (AGRICULTURE)]. Runs 01 January 2000 - 31 December 2005. Programme leader(s): Danielsen, Kristin. More information online at <http://www.forskningsradet.no/jordbruk>.

{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 01 July 2004 - 31 December 2007. Project leader(s): Öborn, Ingrid, Swedish University of Agricultural Sciences, SLU.

{PROJECT} Kohlenstoffflüsse und mikrobielle Diversität [Soil carbon fluxes and microbial diversity]. Runs 31 January 1995 - 31 March 2006. Project leader(s): Fliessbach, Andreas, Research Institute of Organic Agriculture (FiBL), CH-5070 Frick. More information online at <http://www.fibl.org/forschung/anbautechnik-einjaehrig/bodenfruchtbarkeit/index.php>.

{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 01 January 2002 - 31 December 2004. Project leader(s): Öborn, Ingrid, 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 01 January 2005 - 31 December 2007. Project leader(s): Stenberg , Maria, Swedish University of Agricultural Sciences, SLU. More information online at <http://ekoforsk.slu.se/en>.

{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 01 January 2005 - 31 December 2007. Project leader(s): Dahlin, Sigrun, Swedish University of Agricultural Sciences, SLU. More information online at <http://ekoforsk.slu.se/en>.

{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 01 January 2005 - 31 December 2007. Project leader(s): Delin, Sofia and Lindén, Börje, Swedish University of Agricultural Sciences, SLU. More information online at <http://ekoforsk.slu.se/en>.

{FACILITY} Langzeitversuch Darmstadt [Long-term trial Darmstadt]. More information online at <http://www.ibdf.de/v1>.

{PROJECT} Optimisation of nitrogen mineralisation from winter cover crops and utilisation by subsequent crops. Runs 01 August 1995 - 30 June 1999. Project leader(s): Unspecified, , Henry Doubleday Research Association.

{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 15 November 2002 - 31 December 2003. Project leader(s): Laber, Dr. Hermann, Sächsische Landesanstalt für Landwirtschaft. More information online at <http://www.bundesprogramm-oekolandbau.de/projekt_02oe576.html>.

{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 01 January 2006 - 31 December 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 01 January 2002 - 31 December 2004. Project leader(s): Dahlin, Sigrun, Swedish University of Agricultural Sciences, SLU.

{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 01 December 2000 - 31 January 2004. Project leader(s): Freyer, Dr. Bernhard, Department für Nachhaltige Agrarsysteme BOKU Wien. More information online at <http://bokudok.boku.ac.at/bokudok/search_project.show_project?project_id_in=3519>.

{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 01 July 2004 - 30 June 2007. Project leader(s): Nilsson, Ingvar, Swedish University of Agricultural Sciences, SLU.

{PROJECT} The development of improved guidance on the use of fertility building crops in organic farming (CTE0204). Runs 01 May 2002 - 28 February 2006. Project leader(s): Unspecified, , ADAS Consulting Ltd. More information online at <http://www.organicsoilfertility.co.uk/>.

{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 08 November 2003 - 31 December 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. More information online at <http://www.aramis-research.ch/d/15988.html?config=htdig.d&method=and&words=04.11.2.4&keywords=&matchesperpage=10&search_algorithm=exact%3A1%20substring%3A0.75%20accents%3A0.5&fostvalue=%28alle%29&nabsvalue=%28alle%29>.

{FACILITY} University of Nottingham: stockless organic experiment. More information online at <http://www.nottingham.ac.uk/biosciences/ah/Organic/organic.html>.

{PROJECT} Wasserschutz im Ökologischen Landbau: Leitfaden für Praxis und Beratung [Water resources quality control in organic farming: Guideline for practical farming and extension]. Runs 15 October 2007 - 30 June 2009. Project leader(s): Haas, Dr. habil. Guido, AgrarIngenieurbüro Haas. More information online at <http://www.agrarhaas.de>.

{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 01 January 2002 - 31 December 2005. Project leader(s): Hylander, Lars, Uppsala University.

Ambus, P; Petersen, S.O. and Soussana, J.-F. (2006) Short term carbon and nitrogen cycling in urine patches assessed by combined carbon-13 and nitrogen-15 labelling. [preprint]*

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

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. Online at <http://www.springerlink.com/link.asp?id=j081w72368818035>

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

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

Arcand, M M; Lynch, D H; Voroney, R P and van Straaten, P (2006) Improving green manure quality with phosphate rocks in Ontario Canada. Poster presented at What can organic farming deliver? COR 2006, Heriot-Watt University, Edinburgh, 18-20 September 2006; Published 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, page pp. 283-287.

Askegaard, Margrethe (2006) GROWTH AND RESIDUAL EFFECTS OF LEGUME AND NON-LEGUME CATCH CROP SPECIES ON COARSE SAND. [preprint]

Askegaard, Margrethe (2006) RESIDUAL EFFECT AND LEACHING OF N AND K IN CROPPING SYSTEMS WITH LEGUME AND NON-LEGUME CATCH CROPS ON A COARSE SAND. [preprint]

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, 96-103 19:pp. 96-103.**

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. [oral] Presentation at Planteproduktion 2004, Herning, 13-14 Januar.

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

Bachinger, J. and Stein-Bachinger, K. (2000) Organic Farming on large farms with special reference to Eastern Germany. Paper presented at Soil Quality in Relation to Sustainable Development of Agriculture and Environmental Security in Central and Eastern Europe, Pulawy, Poland, 13-17 October 1997; Published in Wilson, M. J. and Maliszewska-Kordybach, B., Eds. Soil Quality, Sustainable Agriculture and Environmental Security in Central and Eastern Europe 69, page pp. 125-138. NATO Science Partnership Sub-Series 2: Environmental Security continued within NATO Science Series IV: Earth and Environmental Sciences. Kluwer Academic Publishers, Dordrecht.

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

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.

Baldin, Bettina and Bohne, Heike (2002) Anpassung von Kulturmaßnahmen an Bodeneigenschaften zur Vermeidung von Nitrateinträgen ins Grundwasser bei einer ökologisch wirtschaftenden Baumschule. Paper presented at 39. Gartenbauwissenschaftliche Tagung, Braunschweig, 27.2.-1.3.2002, page pp. 146-146. BDGL-Schriftenreihe 20.

Baldin, Bettina and Bohne, Heike (2001) Einfluß von Standort, Standjahr und verschiedener Kulturmaßnahmen auf den Mineralstickstoffgehalt des Bodens ökologisch wirtschaftender Baumschulen. Paper presented at 38. Gartenbauwissenschaftliche Tagung, Osnabrück, 28.02. - 02.03.2002, page pp. 33-33. BDGL-Schriftenreihe 19.

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

Ball, B C (2006) Nitrous oxide emissions from organic farming: the importance of well-timed ley cultivation. Poster presented at What can organic farming deliver? COR 2006, Heriot-Watt University, Edinburgh, 18-20 September 2006; Published 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, page pp. 317-320.

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

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 presented at Zwischen Tradition und Globalisierung - 9. Wissenschaftstagung Ökologischer Landbau, Universität Hohenheim, Stuttgart, Deutschland, 20.-23. März 2007.

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 35. Erich Schmidt Verlag, Berlin.

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 (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.

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

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.]. Master thesis, Organic Farming, IAMB Mediterranean Agronomic Institute of Bari. Published in Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies) no. 329.

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.

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 presented at Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005.

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

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, page pp. 226-229. Verlag Dr. Köster, Berlin.

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

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., page pp. 136-142. Verlag Dr. Köster, Berlin.

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, 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).*

Berntsen, Jørgen (2004) Ingen forskel på nitratudvaskning. In Økologisk Jordbrug, Volume 316, page 6.

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). Online at <http://www.darcof.dk/enews/dec03/biomod.html>

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):pp. 19-19.

Beste, Dr. Andrea (2005) Bodenqualität als Grundlage für Produktqualität im ökologischen Lanbdau [Soil quality - a precondition for food quality in organic farming.]. Paper presented at XXXI Fortbildungskurs der Interessensgemeinschaft Ökologischer Landbau e.V. "Boden, Pflanze, Tier, Vermarktung", Bad Düben, 10./11.03.2005; Published in Einsiedel, SIGÖL, Roland, Eds. XXXI Fortbildungskurs der Interessensgemeinschaft Ökologischer Landbau e.V. "Boden, Pflanze, Tier, Vermarktung" Heft 15/2005, page pp. 15-26.

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

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

Bruun, S.; Hansen, T.L.; Christensen, T.H.; Magid, J. and Jensen, L.S. (2005) Application of Processed Organic Municipal Solid Waste on Agricultural Land – A Scenario Analysis [Bruun, S., Hansen, T.L., Christensen, T.H., Magid, J., Jensen, L.S]. [preprint]*

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.*

Bruun, Sander; Hansen, Trine Lund; Christensen, Thomas Højlund; Magid, Jakob and Jensen, Lars Stoumann (2006) Application of processed organic municipal solid waste on agricultural land – model scenario analyses. Environmental Modeling and Assessment(11):pp. 251-265.*

Bruun, Sander and Jensen, Lars Stoumann (2004) Simulations of the effects of application of composted and anaerobically digested municipal waste on leaching of nitrogen, denitrification and soil C storage with the agroecosystem model Dasiy . Report, Department of Agricultural Sciences, Royal Veterinary and Agricultural University.*

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

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. Paper presented at UK Organic Research 2002 Conference, Aberystwyth, 26-28 March 2002; Published in Powell, Jane and et al., , Eds. Proceedings of the UK Organic Research 2002 Conference, page pp. 53-54. Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth.

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.

Canali, Stefano (2003) Soil quality of organically managed citrus orchards in the Mediterranean area., in Organic Agriculture: Sustainability, Markets and Policies. OECD, chapter 2, page pp. 115-125. ISNB 92-64-10150-0 53057 2003. CABI Publishing, Wallingford, UK.

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.

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.

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.]. Master thesis, Organic Farming, IAMB Mediterranean Agronomic Institute of Bari. Published in Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies) no. 352.

Christian Bugge, Henriksen (2000) Kamme - et alternativ til pløjning?. Paper presented at Det Kgl. Danske Landhusholdningsselskabs Akademiråds Efterårsseminar, Foulum, Denmark, November 8, 2000; Published in P. Dam, Hans, Eds. Tidsskrift for Landøkonomi 187(4), page pp. 311-314. Det Kgl. Danske Landhusholdningsselskab.

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.

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]. In Forskningsnytt, Volume 4, page pp. 20-21.

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

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

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

de Neergaard, Andreas; Hauggaard-Nielsen, Henrik; Jensen, Lars Stoumann and Magid, Jakob (2002) Decomposition of white clover (Trifolium repens) and ryegrass (Lolium perenne) components: C and N dynamics simulated with the DAISY soil organic matter submodel . European Journal of Agronomy(16):pp. 43-55.**

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 ]. Paper presented at 8. Wissenschaftstagung Ökologischer Landbau _ ende der Nische, Kassel, 01.03.2005 - 04.03.2005; Published in Heß, J and Rahmann, G, Eds. Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau. kassel university press GmbH, Kassel.

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.

Donnelly, E; Robertson, J and Robinson, D (2006) Potential uses for bracken (Pteridium aquilinum (L.) Kuhn) in organic agrculture. Poster presented at What can organic farming deliver? COR 2006, Heriot-Watt University, Edinburgh, 18-20 September 2006; Published 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, page pp. 289-290.

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]. Paper presented at 8. Wissenschaftstagung Ökologischer Landbau - Ende der Nische, Kassel, 01.03.2005 - 04.03.2005; Published in Heß, J and Rahmann, G, Eds. Ende der Nische, Beiträge zur 8. Wissenschaftstagung Ökologischer Landbau. kassel university press GmbH, Kassel.

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.

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

Elmholt, S. and Holmstrup, M. (2003) Livet i jorden, in Holmstrup, M., Eds. Økologisk landbrug og naturen - gør økologisk landbrug en forskel for natur og miljø?, chapter 2, page pp. 21-31. Miljøbiblioteket 1. Gads Forlag.

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

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, Division of precision agriculture, Department of Soil Sciences, Swedish University of Agricultural Sciences.

Eriksen, J (2007) Projekt om økonomisk og miljøvenligt kløvergræs på store økologiske kvægbrug. In Landbrugsavisen 2. sektion Agro, No 22, page 24.

Eriksen, J (2007) Udnyt græsmarkens kvælstof. In Økologisk Jordbrug, No 377, page 8.

Eriksen, J (2002) Svovl til korn. In Planteavlsorientering, Volume 07-427. Landkontoret for Planteavl.

Eriksen, J (2001) Effects of timing of sulfur application and nitrogen fertilization on yield and quality of barley. Paper presented at COST Action 829 meeting Sulfur-Nitrogen Interactions in Plants, Oulu, Finland, 7-9 September 2001; Published in Book of abstracts from COST Action 829 meeting Sulfur-Nitrogen Interactions in Plants.

Eriksen, J (2001) Eftervirkning af kløvergræs. Paper presented at Efterårskonference 2001, Nyborg Strand, 2 Oktober 2001; Published in Bilag til Efterårskonference 2001, page 64.*

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 (2001) Ompløjning af græsmarker kan give stor udvaskning. In Økologisk Jordbrug, Volume 242, page 6.*

Eriksen, J and Askegaard, M (2002) Pas på kalium og svovl i økologiske sædskifter. In Landsbladet, Volume 36, page 28.

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 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.**

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).**

Eriksen, J and Sørensen, P (2002) Eftervirkning af afgræsningsmarker og husdyrgødning. Paper presented at Kvælstofbalancer på landbrugsbedriften – status og perspektiv, Foulum; Published in Intern DJF rapport 157, page pp. 25-30. DJF.

Eriksen, J and Thorup-Kristensen, K (2002) The effect of catch crops on sulphate leaching and availability of S in the succeeding crop. Poster presented at 5th Workshop on Sulphur Transport and Assimilation, Montpellier, France, 11-14 April 2002; Published in Book of abstracts, page 98.

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 and Vinther, FP (2002) Nitrate leaching in grazed grasslands of different composition and age. Grassland Science in Europe 7:pp. 682-683.

Eriksen, J. (2006) Management af kvælstof i grovfodersædskiftet. Paper presented at Økologikongres 2006, Odense Kongres Center, 30-31 maj; Published in Kongresbilag, page 108.

Eriksen, J. (2006) Miljøeffekter af trynering og græsmarksstyring. Paper presented at Økologikongres 2006; Published in Kongresbilag, page pp. 152-153.

Eriksen, J. (2005) Økologiske søer med ring i trynen. In Økologisk Jordbrug, Volume 341, page pp. 4-4.

Eriksen, J. (2005) Grass cover retained by nose-ringing of outdoor sows only partially reduces the risk of N leaching. DARCOFenews(3). Online at <http://www.darcof.dk/enews/sep05/sow.html>

Eriksen, J. (2005) Ring i trynen garanterer ikke en lav N udvaskning fra søer på græs. Nyhedsbrev fra Forskningscenter for Økologisk Jordbrug(5). Online at <http://www.foejo.dk/enyt2/enyt/okt05/ring.html>

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). Online at <http://www.darcof.dk/enews/april04/grassland.html>

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

Eriksen, J. (2004) Hvordan undgås svovlmangel i økologiske sædskifter. Paper presented at Planteproduktion 2004, 13-14 januar 2004; Published in Månedsmagasinet Mark(1), page 1.

Eriksen, J. (2004) Organic manures as sources of fertiliser sulphur. Paper presented at Biogeochemistry of sulphur in agricultural systems, Pulawy, Poland, 21-22 April 2004; Published in Proceedings of Biogeochemistry of sulphur in agricultural systems II, page pp. 52-70. Polish Fertilizer Society.

Eriksen, J. (February 2004) Svovl i økologiske sædskifter. Online at <http://www.foejo.dk/enyt2/enyt/jan04/svovl.html>. FØJOenyt. Nyhedsbrev fra Forskningscenter for Økologisk Jordbrug

Eriksen, J. (2004) Svovl i økologiske sædskifter?. In Økologisk Jordbrug, 23. January, No 305, page 6.

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

Eriksen, J. (2003) Afgræsningsmarkers eftervirkning [Residual effect of grasslands]. In Økologisk Jordbrug, No 283, page 6.

Eriksen, J. (2003) Afgræsningsmarkers eftervirkning. FØJOenyt(2). Online at <http://www.foejo.dk/foejo/enyt2/enyt/april03/efterv.html>

Eriksen, J. (2002) Organic manures as sources of fertiliser sulphur. Paper presented at International Fertiliser Society, Cambridge, 16-17 December; Published in International Fertiliser Society Proceedings(505), page pp. 1-19.*

Eriksen, J. (2002) Svovl til husdyrgødet vårbyg og forfrugtseffekt af græsmarker. Paper presented at Gødningsseminar 2002, Nyborg, Viborg og Hovborg, 8.-10. Oktober 2002.*

Eriksen, J. (2002) Svovl til husdyrgødet vårbyg og forfrugtseffekt af græsmarker. Paper presented at Gødningsseminarer, Nyborg, Viborg og Hovborg, 8-10 oktober 2002; Published in Bilag til Gødningsseminar 2002.*

Eriksen, J. (2001) Organic manures as sources of fertiliser sulphur. Paper presented at International Fertilizer society, Cambridge, UK, 16-17 December 2002; Published in International Fertiliser Society Proceedings 505, page pp. 1-19.

Eriksen, J. and Askegaard, M. (2007) Residual effect and nitrate leaching in mixed crop rotations differing in grassland type, frequency and fertilizer history. Working Paper.

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 Hansen, E.M. (2006) N-management in grass-arable crop rotations. Paper presented at Plantekongres 2006, Herning Kongres Center, 10-11 januar; Published in Sammendrag af Indlæg, page pp. 469-470.

Eriksen, J.; Hansen, E.M. and Christensen, B.T. (2005) Tilførslen af organisk stof og jordens aktuelle udbyttepotentiale. Paper presented at Plantekongres, Herning Kongres Center, 11-12 Jan; Published in Sammendrag af indlæg, page pp. 230-231.

Eriksen, J. and Hermansen, J.E. (2005) Outdoor production of slaughter pigs requires an optimized management to mitigate N pollution. DARCOFenews(3). Online at <http://www.darcof.dk/enews/jun05/pigs.html>

Eriksen, J. and Hermansen, J.E. (2005) Slagtesvin på friland kræver optimeret driftsledelse for at mindske miljøbelastningen. FØJOenyt. Online at <http://www.foejo.dk/enyt2/enyt/jun05/friland.html>

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.; Studnitz, M.; Strudsholm, K.; Kongsted, A.G. and Hermansen, J 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. 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.

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. and Vinther, F.P. (2004) Nitrate leaching and N2-fixation in grasslands of different composition, age and management. Paper presented at 12th N Workshop; Published in Hatch, D.J.; Chadwick, D.R.; Jarvis, S.C. and Roker, J.A., Eds. Controlling nitrogen flows and losses, page pp. 434-436. Wageningen Academic Publishers, The Netherlands.

Eriksen, J.; Vinther, F.P. and Søegaard, K. (2004) Ældre marker med kløvergræs kan beskytte grundvandet mod nitrat. FØJOenyt(4). Online at <http://www.foejo.dk/enyt2/enyt/aug04/udvask.html>

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.

Eriksen, J.P.; Vinther, F.P. and Søegaard, K. (2004) Low nitrate leaching from long-term grass-clover. DARCOFenews(3). Online at <http://www.darcof.dk/enews/sep04/lowleach.html>

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.

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):pp. 26-37.

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 presented 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]. Paper presented at 48. Jahrestagung der Gesellschaft für Pflanzenbauwissenschaften, Wien, 27.-29. September 2005; Published in Mitt. Ges. Pflanzenbauwiss. 17, page 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. Paper presented at 13th International IFOAM Scientific Conference, Basel, 2000; Published 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. Paper presented at 13th International IFOAM Scientific Conference, Basel; Published in Alföldi, Thomas; Lockeretz, W. and Niggli, Urs, Eds. Proceedings 13th International IFOAM Scientific Conference. vdf Hochschulverlag, Zürich, Switzerland.

Fliessbach, Andreas; Mäder, Paul; Pfiffner, Lukas; Dubois, D. and Gunst, L. (2000) Erkenntnisse aus 21 Jahren DOK-Versuch: Bio fördert Bodenfruchtbarkeit und Artenvielfalt [Organic farming enhances soil fertility and biodiversity Results from a 21 year old field trial ]. FiBL-Dossier 1. Forschungsinstitut für biologischen Landbau, Frick.

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.

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

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.

Friedel, Dr. Jürgen K.; Farthofer, Renate; Pietsch, Gabriele and Freyer, Prof. Dr. Bernhard (2003) Auswirkungen unterschiedlich ge