Items where Author is "Askegaard, Senior scientist Margrethe"

Number of eprints: 78.

Journal paper

Pandey, Arjun; Li, Fucui; Askegaard, Margrethe; Rasmussen, Ilse A. and Olesen, Jørgen E. (2018) Nitrogen balances in organic and conventional arable crop rotations and their relations to nitrogen yield and nitrate leaching losses. Agriculture, Ecosystems & Environment, 265, pp. 350-362.

Rasmussen, Ilse A.; Melander, Bo; Askegaard, Margrethe; Kristensen, Kristian and Olesen, Jørgen E. (2014) Elytrigia repens population dynamics under different management schemes in organic cropping systems on coarse sand. European Journal of Agronomy, 58, 18-27.

Melander, Bo; Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2014) Growth dynamics of perennial weeds in long-termed organic 8 cropping systems on two locations in Denmark. Agroecosystems and Environment, , - . [Completed]

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.

Sapkota, Tek Bahadur; Askegaard, Margrethe; Lægdsmand, Mette and Olesen, Jørgen Eivind (2011) Effects of catch crop type and root depth on nitrogen leaching and yield of spring barley. Field Crops Research, 125, pp. 129-138.

Laursen, Kristian Holst; Schjoerring, Jan K.; Olesen, Jørgen E.; Askegaard, Margrethe; Halekoh, Ulrich and Husted, Søren (2011) Multielemental fingerprinting as a tool for authentication of organic wheat, barley, faba bean and potato. Journal of Agricultural and Food chemistry, 59, pp. 4385-4396.

Olesen, Jørgen Eivind; Askegaard, Margrethe and Rasmussen, Ilse A. (2009) Winter cereal yields as affected by animal manure and green manure in organic arable farming. European Journal of Agronomy, 30, pp. 119-128.

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.

Olesen, Jørgen E.; Hansen, Elly M.; Askegaard, Margrethe and Rasmussen, Ilse A. (2007) The value of catch crops and organic manures for spring barley in organic arable farming. Field Crops Research, 100, pp. 168-178.

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.; Driessen, Eugene; Nielsen, Erling; Thomsen, Henning C.; Bak, Holger and Lindberg, Julie F. (2004) ØKOLOGISKE SÆDSKIFTER TIL PRODUKTION AF KORN. [Organic crop rotations for cereal production.] Grøn Viden, Markbrug (298), pp. 1-20.

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, Margrethe and Eriksen, Jørgen (2002) Exchangeable potassium in soil as indicator of potassium status in an organic crop rotation on loamy sand. Soil Use and Management, 18, pp. 84-90.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær; Askegaard, Margrethe and Kristensen, K. (2002) Whole-rotation dry matter and nitrogen grain yields from the first course of an organic farming crop rotation experiment. Journal of Agricultural Science, Cambridge, 139, pp. 361-370.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse Ankær (2000) Design of an organic farming crop rotation experiment. Acta Agriculturae Scandinavica, section B, Soil and Plant Science, 50, pp. 13-21.

Askegaard, Margrethe and Eriksen, Jørgen (2000) Potassium retention and leaching in an organic crop rotation on loamy sand as affected by contrasting potassium budgets. Soil Use and Management, 16, pp. 200-205.

Newspaper or magazine article

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) Sædskifteforsøg skal give nye svar. [Crop rotation experiments expected to give new answers.] Økologisk Jordbrug, April 2006 (359), p. 9.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) Sædskifteforsøg skifter retning. [Change of direction in crop rotation experiments.] Økologisk Jordbrug, April 2006 (359), pp. 8-9.

Askegaard, Margrethe (2004) Kaliumtal og kaliumbalancer som redskaber i planteproduktionen. [Potassium status and balances as tools in the crop production.] Kaliumtal og kaliumbalancer som redskaber i planteproduktionen, January 2004, 1, p. 63.

Rasmussen, Ilse A.; Thomsen, Henning; Askegaard, Margrethe and Olesen, Jørgen E. (2003) Kvik volder kvaler. Økologisk Jordbrug, May 2003, 23 (288), p. 8.

Olesen, Jørgen E.; Rasmussen, Ilse A. and Askegaard, Margrethe (2003) Sådan er det gået med forsøgssædskifterne. Økologisk Jordbrug, 2003, 23 (288), p. 12. [Unpublished]

Askegaard, Margrethe (2002) Forsøg med efterafgrøder på sandjord. Økologisk Jordbrug, November 2002 (275), p. 6.

Askegaard, Margrethe (2002) Kvælstofudvaskningen i de økologiske sædskifter (Sædskiftet holder på kvælstoffet). Økologisk Jordbrug, April 2002, 263, p. 8.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2002) Problemer med rodukrudt. Økologisk Jordbrug, April 2002, 22 (263), p. 8.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2002) Udbytter i forsøgssædskifter til kornproduktion. Økologisk Jordbrug, April 2002 (263), p. 9.

Askegaard, Margrethe (2001) Nyt fra de økologiske sædskifteforsøg. Økologisk Jordbrug, September 2001, 247, p. 6.

Askegaard, Margrethe (2001) Nyt fra de økologiske sædskifteforsøg (Nyt fra forsøg med de økologiske sædskifter). Økologisk Jordbrug, May 2001, 241, p. 6.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2001) Fangafgrøder i sædskiftet øger udbyttet i vårsæd. Økologisk Jordbrug, April 2001 (238).

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2001) Nye og bedre sædskifter. Økologisk Jordbrug, April 2001, 21 (238), p. 9.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2001) Planteavl uden kløvergræs mulig. Økologisk Jordbrug, April 2001 (238), p. 8.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2001) Udbytter i sædskifter til økologisk kornproduktion. Forskningsnytt om økologisk landbruk i Norden, 2001 (2), pp. 12-13.

Askegaard, Margrethe (2000) Nyt fra sædskifteforsøg. Økologisk Jordbrug, September 2000, 223, p. 8.

Askegaard, Margrethe (2000) Nyt fra Forskningscenter for Økologisk Jordbrug – fra det økologiske sædskifteforsøg (Forår uden problemer). Økologisk Jordbrug, May 2000, 217, p. 8.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2000) Danske forskere tester sædskifter. Økologisk Jordbrug, April 2000 (215), p. 14.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2000) Økologisk vinterhvede kan lykkes på god jord. Landsbladet Mark, 2000 (8), p. 26.

Conference paper, poster, etc.

Askegaard, Margrethe and Eriksen, J. (2013) Management affects nitrate leaching from organic farms. 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. 47-48.

Askegaard, Margrethe and Olesen, Jørgen E. (2011) Økologiske planteavlssædskifter – erfaringer og produktivitet. [Organic crop rotations-experiences and productivity.] In: Plantekongres 2011.

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.

Askegaard, Margrethe and Olesen, Jørgen E. (2011) N-udvaskning fra økologiske planteavlssædskifter. [Nitrogen leaching from organic crop rotations.] In: Plantekongres 2011.

Søegaard, Karen; Eriksen, Jørgen and Askegaard, Margrethe (2008) Herbs in grasslands - effect of slurry and grazing/cutting on species composition and nutritive value. In: Hopkins, A.; Gustafsson, T.; Bertilsson, J.; Dalin, G.; Nilsdotter-Linde, N. and Spörnly, E. (Eds.) Grassland Science in Europe, 13, pp. 200-202.

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.

Olesen, Jørgen E.; Rasmussen, Ilse A. and Askegaard, Margrethe (2008) Nitrogen use efficiency of cereals in arable organic farming. 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. Volume 1. Organic Crop production, 1, pp. 316-319.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse A. (2008) Sædskiftets og gødskningens betydning for udbytte i vårbyg. In: Strand, Einar (Ed.) Plantemøtet 2008, Bioforsk Fokus, no. 3 (1), pp. 80-81.

Rasmussen, Ilse A.; Thomsen, Henning C.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) Den langsigtede effekt af kløvergræsgrøngødning og efterafgrøder på udviklingen af kvik og tidsler. In: Jespersen, Jørgen B. and Pedersen, Carl Åge (Eds.) Sammendrag af indlæg Plantekongres 2006, Danmarks JordbrugsForskning og Dansk Landbrugsrådgivning, pp. 358-359.

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.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2006) Organic crop rotation experiments - short-term versus longer-term results. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Askegaard, Margrethe; Støvring, Mogens and Berntsen, Jørgen (2006) Performance of spring barley in an organic mixed crop rotation. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

Askegaard, Margrethe (2006) Rodukrudt hører ikke hjemme i økologisk planteproduktion. [Perennial weeds are undesirable in organic agriculture.] Speech at: Kan høj produktion og lav miljøbelastning forenes i økologisk jordbrug?, Forskningscenter Foulum, 22. juni 2006.

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.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2005) LONG-TERM ORGANIC CROP ROTATION EXPERIMENTS FOR CEREAL PRODUCTION – PERENNIAL WEED CONTROL AND NITROGEN LEACHING. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

Askegaard, Margrethe; Olesen, Jørgen E. and Rasmussen, Ilse A. (2005) Long-term organic crop rotation experiments for cereal production – yield development and dynamics. Paper at: Researching Sustainable Systems - International Scientific Conference on Organic Agriculture, Adelaide, Australia, September 21-23, 2005. [Unpublished]

Olesen, Jørgen E.; Askegaard, Margrethe and Berntsen, Jørgen (2004) Nitrate leaching from arable crop rotations in organic farming. In: Hatch, D.J.; Chadwick, D.R.; Jarvis, S.C. and Roker, J.A. (Eds.) Controlling nitrogen flows and losses, Wageningen Academic Publishers, pp. 389-396.

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.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse A. (2003) Crop production and N leaching in arable organic farming. Paper at: NJF's 22nd Congress "Nordic Agriculture in Global Perspective", Turku, Finland.

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.

Olesen, Jørgen E. and Askegaard, Margrethe (2003) Nitrate leaching from arable crop rotations in organic farming. Paper at: 12th N workshop, Exeter, Devon, UK, 21-24 September, 2003. [Unpublished]

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse A. (2002) Økologisk planteavl uden husdyr. [Organic crop production without animals.] Paper at: Næringsstofforsyning i økologiske dyrkningssystem med lite husdyrgjødsel, Honne, Norge.

Askegaard, Margrethe; Olesen, Jørgen E. and Rasmussen, Ilse Ankær (2002) Lokalitetens og dyrkningsvilkårenes betydning i økologisk planteavl. In: Corell, A.; Kjær, L.B. and Frederiksen, H.B. (Eds.) DJF rapport Markbrug, 78, pp. 67-70.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse Ankær (2002) Sædskiftets indre dynamik i økologisk planteavl. In: Corell, A.; Kjær, L.B. and Frederiksen, H.B. (Eds.) Djf rapport Markbrug, 78, pp. 71-74.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse Ankær (2000) Crop production during the first course of an organic crop rotation trial in Denmark. In: Cook, S.K.; Cormack, W.F.; Green, M.; Holland, J.M.; Leake, A.R. and Welsh, J.P. (Eds.) Aspects of Applied Biology, The association of applied biologists, 62, pp. 187-195.

Olesen, Jørgen E.; Rasmussen, Ilse Ankær and Askegaard, Margrethe (2000) Crop rotations for grain production. In: Alföldi, T.; Lockeretz, W. and Niggli, U. (Eds.) Proceedings 13th International IFOAM Scientific Conference, p. 145.

Olesen, Jørgen E.; Askegaard, Margrethe and Rasmussen, Ilse Ankær (2000) Udnyttelse af husdyrgødning i sædskifter til økologisk planteavl. In: Sommer, Sven G. and Eriksen, Jørgen (Eds.) FØJO rapport, FØJO, 7, pp. 75-82.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (2000) Weed control in organic crop rotation experiments for grain production. In: Alföldi, T.; Lockeretz, W. and Niggli, U. (Eds.) Proceedings 13th International IFOAM Scientific Conference, vdf Hochschulverlag AG an der ETH Zürich, p. 182.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (1999) Plant protection in an organic crop rotation experiment for grain production. In: Olesen, Jørgen E.; Eltun, Ragnar; Gooding, Mike J.; Jensen, Erik Steen and Köpke, Ulrich (Eds.) DARCOF report no. 1: Designing and testing crop rotations for organic farming. Proceedings from an international workshop, Danish Research Centre for Organic Farming, pp. 321-330.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (1999) Weed control in organic crop rotations for grain production. In: Kropff, M.J.; Gut, D.; Streibig, J.C. and Baumann, D.T. (Eds.) Proceedings 11th EWRS Symposium, European Weed Research Society, p. 98.

Report chapter

Olsen, Lars Egelund; Bertelsen, Inger; Mariegaard Pedersen, Tove; Pødenphant, Lars; Thomsen, Darran Andrew; Askegaard, Margrethe and Oudshoorn, Frank (2016) Økologisk dyrkning. [Organic culture.] In: Oversigten over Landsforsøgene 2016. SEGES .

Askegaard, Margrethe (2011) Udfasning af konventionel husdyrgødning. [Phasing out of conventional manure.] In: Blume, Steffen (Ed.) Økologisk Planteavlsberetning 2011. Økologisk Rådgivning, chapter 11, pp. 11-14.

Søegaard, Karen; Sehested, Jakob; Eriksen, Jørgen; Askegaard, Margrethe; Mogensen, Lisbeth and Jensen, Søren K. (2010) Urter i græsmarken. In: Kristensen, Troels (Ed.) Økologisk græsmarksproduktion og udnyttelse til mælkeproduktion. , chapter 1, pp. 5-14.

Rasmussen, Ilse A.; Askegaard, Margrethe and Olesen, Jørgen E. (1999) Ukrudt i økologiske kornsædskifteforsøg. In: 16. Danske Planteværnskonference, Plantebeskyttelse i økologisk jordbrug, Sygdomme og skadedyr. DJF-rapport, Markbrug, no. 10. Danmarks JordbrugsForskning, pp. 17-28.

Book chapter

Olsen, Lars Egelund; Thomsen, Darran Andrew; Bertelsen, Inger; Pedersen, Tove Mariegaard; Madsen, Katrine Hauge and Askegaard, Margrethe (2015) Økologisk dyrkning. In: Oversigt over landsforsøgene 2015. SEGES P/S, Agro Food Park 15, 8200 Aarhus N, Danmark, pp. 261-281.

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.

Practice tool

{Tool} Professional guide for organic arable farmers. [Faglig Guide til Økologiske Planteavlere.] Creator(s): Askegaard, Margrethe; Hermansen, Sven and Østergaard, Claus. Issuing Organisation(s): ICROFS - International Centre for Research in Organic Food Systems. (2021)

{Tool} Crop rotation and its ability to suppress perennial weeds (OK-Net Arable Practice abstract). Creator(s): Askegaard, Margrethe. Issuing Organisation(s): SEGES. OK-Net Arable Practice abstract, no. 038. (2017)

{Tool} Efficient use of nitrogen from livestock manure (OK-Net Arable Practice abstract). Creator(s): Askegaard, Margrethe. Issuing Organisation(s): SEGES. OK-Net Arable Practice abstract, no. 037. (2017)

{Tool} Growing cover crops in organic arable crop rotations: Best practices from Denmark (OK-Net Arable Practice abstract). Creator(s): Askegaard, Margrethe. Issuing Organisation(s): SEGES. OK-Net Arable Practice abstract, no. 036. (2017)

{Tool} Crop rotation and its ability to suppress perennial weeds. [Sædskifter.] Creator(s): Askegaard, Margrethe. Issuing Organisation(s): SEGES. (2016)

{Tool} Efficient nitrogen use from livestock manure. [Udnyttelse af kvælstof i husdyrgødning.] Creator(s): Askegaard, Margrethe. Issuing Organisation(s): SEGES. (2016)

{Tool} Growing cover crops in organic arable crop rotations: best practices from Denmark. [Efterafgrøder.] Creator(s): Askegaard, Margrethe. Issuing Organisation(s): SEGES. (2016)

This list was generated on Sun Jul 13 16:45:23 2025 CEST.