<> "The repository administrator has not yet configured an RDF license."^^ . . "Organic cropping systems for higher and more stable cereal yields"^^ . "\"Organic cropping systems for higher and more stable cereal yields\" is a 5- year Strategic Institute Programme from Research Council of Norway, “Bioproduksjon og foredling” led by Bioforsk Arable Crops Division in cooperation with The Norwegian University of Life Sciences (UMB), Bioforsk Organic Food and Farming Division, Bioforsk Plant Health and Protection Division, Bioforsk Grassland and Landscape Division and Hedmark University College. In addition scientists from Denmark, Finland, The Netherlands and China are involved. Of vital importance for future policy on the structure and development of organic farming in Norway is how and to what extent we can improve the level and stability of cereal yields in organic cash cropping systems with limited access to organic nutrient sources, without compromising the major goal of sustainability in organic farming. In this programme we will seek solutions to this task through a comprehensive agroecological analysis combined with component-oriented studies of the main bottlenecks in organic cereal production:1) poor soil structure; 2) insufficient nitrogen supply; 3) perennial weeds.\r\nThe education of a PhD candidate in agroecology is included in the programme. International cooperation and broadening of the level of competency in this field of research will be focussed upon.\r\n"^^ . . . . . . . "Organic cropping systems for higher and more stable cereal yields (Other format)"^^ . . . "RevSoknadjanuar2003.doc"^^ . . "HTML Summary of #7052 \n\nOrganic cropping systems for higher and more stable cereal yields\n\n" . "text/html" . . . " Cereals, pulses and oilseeds"@en . " Getreide, Leguminosen und Ölpflanzen"@de . . . " Weed management"@en . " Beikrautregulierung"@de . . . " Soil biology"@en . " Bodenbiologie"@de . . . "Farm nutrient management"@en . "Nährstoffmanagement auf dem Betrieb"@de . . . " Soil tillage"@en . " Bodenbearbeitung"@de . . . "Jordarbeidingsmetodar for korndominerte dyrkingssystem – avlingseffektar"^^ . "I fleirårige, fastliggande forsøk på Planteforsk Apelsvoll og Kvithamar undersøker ein kva traktortyngde, pløyedjup og køyremåte ved pløying har å seie for jordstruktur og avlingar i økologisk korndyrking. Etter to år er det framleis ikkje store utslag for forsøksfaktorane. Avhengig av vekst og tildels traktortyngde er det sikre utslag for pløyedjup, men avlingsvariasjonen innan felt og delvis mellom år er stort sett større. Djup pløying gav gjennomgåande større kornavlingar enn grunn pløying, men for bygg etter grønngjødsling på Kvithamar, som verken var tilført husdyrgjødsel eller mineralgjødsel, vart avlingane størst med grunn pløying. "^^ . "2005" . . "9" . "2" . . "Grønn kunnskap"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Thorbjørn"^^ . "Wikmark"^^ . "Thorbjørn Wikmark"^^ . . "Trond"^^ . "Henriksen"^^ . "Trond Henriksen"^^ . . "Ragnar"^^ . "Eltun"^^ . "Ragnar Eltun"^^ . . "Leif"^^ . "Sundheim"^^ . "Leif Sundheim"^^ . . "Svein"^^ . "Selnes"^^ . "Svein Selnes"^^ . . "Tori"^^ . "Fjeld"^^ . "Tori Fjeld"^^ . . "Hugh"^^ . "Riley"^^ . "Hugh Riley"^^ . . "Anne Kjersti"^^ . "Bakken"^^ . "Anne Kjersti Bakken"^^ . . "Kari"^^ . "Munthe"^^ . "Kari Munthe"^^ . . "Nina"^^ . "Heiberg"^^ . "Nina Heiberg"^^ . . "Kjell"^^ . "Mangerud"^^ . "Kjell Mangerud"^^ . . . . . . "Jordarbeidingsmetodar for korndominerte dyrkingssystem – avlingseffektar (PDF)"^^ . . . "gk9_2_bakken_362_367.pdf"^^ . . . "Jordarbeidingsmetodar for korndominerte dyrkingssystem – avlingseffektar (Other format)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #6889 \n\nJordarbeidingsmetodar for korndominerte dyrkingssystem – avlingseffektar\n\n" . "text/html" . . . " Cereals, pulses and oilseeds"@en . " Getreide, Leguminosen und Ölpflanzen"@de . . . " Soil tillage"@en . " Bodenbearbeitung"@de . . . "Contribution of N from frequently chopped green manure to a succeeding crop of barley "^^ . "The aim of the present work was to study to what extent N in mulched green manure herbage contributes to spring barley grain yield the subsequent year. The green manure herbage was either chopped and left on stubble (GML) or removed (GMR). On silty clay loam with spring incorporated green manure the subsequent barley grain yield was 10% higher with GML than with GMR. The additional grain N yield of 4 kg ha-1 with GML corresponded to only 3 % of N in above-ground green manure biomass. On loamy soil with late autumn incorporated green manure the treatments did not affect the grain yield the subsequent year. How large part of the N that was lost through leaching or gaseous emissions and how large part that was built into soil organic matter was not measured. However, this investigation confirms that potential N losses from mowed green manure might be large. Alternative ways of using the herbage should be found."^^ . "2008" . . "1" . . "International Society of Organic Agriculture Research (ISOFAR), University of Bonn"^^ . . . "Cultivating the future based on science"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Helga"^^ . "Willer"^^ . "Helga Willer"^^ . . "Paola"^^ . "Migliorini"^^ . "Paola Migliorini"^^ . . "Lorna"^^ . "Lueck"^^ . "Lorna Lueck"^^ . . "Sissel"^^ . "Hansen"^^ . "Sissel Hansen"^^ . . "Andreas"^^ . "Thommen"^^ . "Andreas Thommen"^^ . . "Daniel"^^ . "Neuhoff"^^ . "Daniel Neuhoff"^^ . . "Ilse A"^^ . "Rasmussen"^^ . "Ilse A Rasmussen"^^ . . "Anne Kjersti"^^ . "Bakken"^^ . "Anne Kjersti Bakken"^^ . . "Niels"^^ . "Halberg"^^ . "Niels Halberg"^^ . . "Mette"^^ . "Vaarst"^^ . "Mette Vaarst"^^ . . "Thomas"^^ . "Alföldi"^^ . "Thomas Alföldi"^^ . . "John"^^ . "Hermansen"^^ . "John Hermansen"^^ . . "Fabio"^^ . "Caporali"^^ . "Fabio Caporali"^^ . . "Randi Berland"^^ . "Frøseth"^^ . "Randi Berland Frøseth"^^ . . "William"^^ . "Lockeretz"^^ . "William Lockeretz"^^ . . "Henning Hogh"^^ . "Jensen"^^ . "Henning Hogh Jensen"^^ . . . . . . "Contribution of N from frequently chopped green manure to a succeeding crop of barley (PDF)"^^ . . . "Contribution_of_N_from_frequently_chopped_green_manure_to_a_succeeding_crop_of_barley.pdf"^^ . . . "Poster_ISOFAR_juni_2008.pdf"^^ . . . "Contribution of N from frequently chopped green manure to a succeeding crop of barley (Other format)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #14240 \n\nContribution of N from frequently chopped green manure to a succeeding crop of barley \n\n" . "text/html" . . . " Nutrient turnover"@en . " Nährstoffumsatz"@de . . . "Farm nutrient management"@en . "Nährstoffmanagement auf dem Betrieb"@de . . "Effects of ploughing depth on decomposition of barley straw in organically managed soil"^^ . "Litterbag were used to study the effects of different ploughing depths on decomposition rate of barley straw with different ploughing depths. The burying depth of the litter (13 vs 25 cm) affected the decomposition rate of barely straw more than the different ploughing depths (13 vs 25 cm). From our results we suggest that slowly decomposable organic matter, such as leached barley straw, may be incorporated deeply by ploughing in organic cereal production systems, in order to regulate perennial weeds. In soils with good structure and porosity, the decomposition rate of straw can even be larger with deep ploughing. In dense, clayey soils it is important to be very accurate in ploughing time in order to secure that the ploughing is in fact loosening the soil. Otherwise, lack of oxygen and low decomposition of straw is likely to be the results."^^ . "2006-05" . . "1" . "24" . . "Bioforsk- Norwegian Institute for Agricultural and Environmental Research"^^ . . . "Bioforsk Tema"^^ . . . . . . . . . . . . . . . . . "Erling L."^^ . "Meisingset"^^ . "Erling L. Meisingset"^^ . . "Anne-Kristin"^^ . "Løes"^^ . "Anne-Kristin Løes"^^ . . "Sissel"^^ . "Hansen"^^ . "Sissel Hansen"^^ . . "Reidun"^^ . "Pommeresche"^^ . "Reidun Pommeresche"^^ . . . . . . "Effects of ploughing depth on decomposition of barley straw in organically managed soil (PDF)"^^ . . . "barley_t_1_24_pommeresche_2006.pdf"^^ . . . "Effects of ploughing depth on decomposition of barley straw in organically managed soil (Other format)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #8765 \n\nEffects of ploughing depth on decomposition of barley straw in organically managed soil\n\n" . "text/html" . . . " Soil biology"@en . " Bodenbiologie"@de . . . " Soil tillage"@en . " Bodenbearbeitung"@de . . . "Meitemarkens rolle i omdanning av planterester"^^ . "Ulike arter meitemark har forskjellig adferd og ulik betydning for omdanning av planterester. Stor meitemark, skogsmeitemark og kompostmeitemark spiser store mengder planterester og heller lite jord. Grå, rosa og delvis lang meitemark spiser mer omdannede planterester og større andel jord. Grå, stor, lang og rosa meitemark graver ganger av ulike typer i jorda. Meitemarkens fordøyelsessystem har krås til å \"knuse\" og blande jord og planterester. Omdanningen av planterester er også et tett samspill mellom mark og mikroorgansimer. God smakelighet og passe størrelse på planterestene er positivt for marken. Meitemarken utnytter ikke selv all næringen som er i planterestene. Ekskrementene er derfor fulle av næring for planterøtter og jordlivet ellers. God smakelighet og middels med strukturstoffer i plantematerialet og husdyrgjødsla som tilføres jorda medfører flere og mer næringsrike bidrag fra meitemarken i neste omgang. Hvis man fôrer disse \"husdyra\" godt, vil de gi en mer fruktbar og porøs jord enn om de går på sparebluss."^^ . "2005" . . "9" . "3" . . "Planteforsk (Norwegian Institute of Crop Research)"^^ . . . "Grønn kunnskap"^^ . . . . . . . . . . . "Reidun"^^ . "Pommeresche"^^ . "Reidun Pommeresche"^^ . . "Erling L."^^ . "Meisingset"^^ . "Erling L. Meisingset"^^ . . . . . . "Meitemarkens rolle i omdanning av planterester (PDF)"^^ . . . "GrønnForskning_mm_planter_m_ref_05.pdf"^^ . . . "Meitemarkens rolle i omdanning av planterester (Other format)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #6835 \n\nMeitemarkens rolle i omdanning av planterester\n\n" . "text/html" . . . " Nutrient turnover"@en . " Nährstoffumsatz"@de . . . " Soil biology"@en . " Bodenbiologie"@de . . "Long-term effects of cropping systems on the earthworm population in a loam soil"^^ . "Six cropping systems, ranging from conventional arable without livestock to organic livestock farming dominated by ley, have been compared in 1990 and 2004 in SE Norway. Ley in the crop rotation increased density and biomass of earthworms and channels in both organic and conventional systems. A ley proportion higher than 25 % only increased the density of channels. Among the arable systems, the organic system had a higher density and biomass of earthworms as compared to the conventional systems. Among the fodder systems, the optimised system had the highest density of earthworms in 2004, but there were no differences between these systems in earthworm biomass or density of earthworm channels."^^ . "2006-05" . . "1" . "4" . . "Bioforsk- Norwegian Institute for Agricultural and Environmental Research"^^ . . . "Bioforsk Tema"^^ . . . . . . . . . . . . . . . . . "Reidun"^^ . "Pommeresche"^^ . "Reidun Pommeresche"^^ . . "Sissel"^^ . "Hansen"^^ . "Sissel Hansen"^^ . . "Ragnar"^^ . "Eltun"^^ . "Ragnar Eltun"^^ . . "Audun"^^ . "Korsaeth"^^ . "Audun Korsaeth"^^ . . . . . . "Long-term effects of cropping systems on the earthworm population in a loam soil (PDF)"^^ . . . "long_term_effects_t_1_4_pommeresche_2006.pdf"^^ . . . "Long-term effects of cropping systems on the earthworm population in a loam soil (Other format)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #8766 \n\nLong-term effects of cropping systems on the earthworm population in a loam soil\n\n" . "text/html" . . . " Crop combinations and interactions"@en . " Fruchtfolge, Zwischensaaten, Mischkultur"@de . . . " Soil biology"@en . " Bodenbiologie"@de . . "Soil structure, organic matter and earthworm activity in a comparison of cropping systems with contrasting tillage, rotations, fertilizer levels and manure use"^^ . "Abstract\r\nIn order to assess long-term effects on productivity, environmental impacts and soil fertility of contrasting farming practices, six cropping systems, ranging from conventional arable without livestock to organic mixed dairy farming with few arable crops, have been compared since 1989 on a loam soil. \r\n\r\nA decline in soil structure quality was found in a conventional arable system with annual ploughing with no rotational grass. This system had higher bulk density and mean aggregate size than other systems, and lower levels of plant available water and aggregate stability. Opposite trends were related to the proportion of grass leys in the other systems and to their levels of soil organic matter. The latter declined markedly over 15 years in the conventional arable system, and there were smaller declines in most other systems. In an arable system without ploughing, but with rotary tillage in spring, organic matter was maintained and high structural stability was found. This system had high bulk density, but the proportion of small aggregates equalled that found in systems with ley. \r\n\r\nThere were overall increases in earthworm density (84%), earthworm biomass (80%) and the density of earthworm channels (132%) in the topsoil between 1994 and 2004. Most of these increases were found in systems with 1–3 years of ley in the 4-year rotation. Low values of all earthworm parameters, and only minor changes over the period studied, were found in two non-organic arable systems without ley, indicating high pressure on soil fauna. Lower earthworm activity was found in the non-organic arable system with reduced tillage as compared to the non-organic arable system with annual ploughing. Thus, 50% leys in the rotation appeared desirable for the maintenance of satisfactory soil structure and earthworm activity. Though the deterioration of soil structure in the conventional arable system was not extreme, as the soil was well structured initially, the results may have implications for the sustainability of stockless arable systems on soils with a less favourable initial structure."^^ . "2008-01" . . "124" . . "Elsevier"^^ . . . "Agriculture, Ecosystems and Environment"^^ . . . . . . . . . . . . . . . . . . . . "Hugh"^^ . "Riley"^^ . "Hugh Riley"^^ . . "Ragnar"^^ . "Eltun"^^ . "Ragnar Eltun"^^ . . "Reidun"^^ . "Pommeresche"^^ . "Reidun Pommeresche"^^ . . "Sissel"^^ . "Hansen"^^ . "Sissel Hansen"^^ . . "Audunk"^^ . "Korsaeth"^^ . "Audunk Korsaeth"^^ . . . . . . "Soil structure, organic matter and earthworm activity in a comparison of cropping systems with contrasting tillage, rotations, fertilizer levels and manure use (PDF)"^^ . . . "Riley_et_al._2008_AGEE3129.pdf"^^ . . . "Soil structure, organic matter and earthworm activity in a comparison of cropping systems with contrasting tillage, rotations, fertilizer levels and manure use (Other format)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #13474 \n\nSoil structure, organic matter and earthworm activity in a comparison of cropping systems with contrasting tillage, rotations, fertilizer levels and manure use\n\n" . "text/html" . . . " Soil"@en . " Boden"@de . . . " Farming Systems"@en . " Betriebswirtschaft / Soziales"@de . . . " Soil biology"@en . " Bodenbiologie"@de .