Items where Author is "Olesen, Jørgen E."

Number of eprints: 147.

Journal paper

De Notaris, Chiara; Enggrob, Ea E.; Olesen, Jørgen E.; Sørensen, Peter and Rasmussen, Jim (2023) Faba bean productivity, yield stability and N2-fixation in long-term organic and conventional crop rotations. Field Crops Research, 295, pp. 1-34.

Olesen, Jørgen E.; Ress, Robert; Recous, Sylvie; Bleken, Marina Azzaroli; Abalos, D; Ahuja, Ishita; Butterbach-Bahl, K.; Carozzi, M.; Notaris, C.; Ernfors, Maria; Haas, E. De; Hansen, Sissel; Janz, Baldur; Lashermes, G; Massad, R; Petersen, Søren O.; Rittl, Tatiana; Scheer, C.; Smith, K. E.; Thiébeau, P; Taghizadeh-Toosi, Arezoo; Thorman, R. E. and Topp, Cairistiona F E (2023) Challenges of accounting nitrous oxide emissions from agricultural crop residues. Global change biology, 29, pp. 6846-6855.

Abalos, Diego; Rittl, Tatiana; Recous, Sylvie; Thiébeau, Pascal; Topp, Cairistiona F.E.; van Groenigen, Kees Jan; Butterbach-Bahl, Klaus; Thorman, Rachel E.; Smith, Kate E.; Ahuja, Ishita; Olesen, Jørgen E.; Bleken, Marina A.; Ress, Robert and Hansen, Sissel (2022) Predicting field N2O emissions from crop residues based on their biochemical composition: A meta-analytical approach. Science of the Total Environment journal, 812, p. 15232.

De Notaris, Chiara; Jensen, Johannes Lund; Olesen, Jørgen E.; da Silva, Tiago Stumpf; Panagea, Ioanna; Rubæk, Gitte H. and Rasmussen, Jim (2021) Long-term soil quality effects of soil and crop management in organic and conventional arable cropping systems. Geoderma, 403, 0-0.

De Notaris, Chiara; Mortensen, Esben Øster; Sørensen, Peter; Olesen, Jørgen E. and Rasmussen, Jim (2021) Cover crop mixtures including legumes can self-regulate to optimize N2 fixation while reducing nitrate leaching. Agriculture, Ecosystems & Environment, 309, p. 107287.

Pullens, JWM; Sørensen, Peter; Melander, Bo and Olesen, Jørgen E. (2021) Legacy effects of soil fertility management on cereal dry matter and nitrogen grain yield of organic arable cropping systems. European Journal of Agronomy, 122, p. 126169.

Mortensen, Esben Øster; De Notaris, Chiara; Peixoto, Leanne; Olesen, Jørgen E. and Rasmussen, Jim (2021) Short-term cover crop carbon inputs to soil as affected by long-term cropping system management and soil fertility. Agriculture, Ecosystems & Environment, 311, p. 107339.

Peixoto, Leanne; Elsgaard, Lars; Rasmussen, Jim; Kuzyakov, Yakov; Banfield, Callum C.; Dippold, Michaela A. and Olesen, Jørgen E. (2020) Decreased rhizodeposition, but increased microbial carbon stabilization with soil depth down to 3.6 m. Soil Biology and Biochemistry, 150, p. 108008.

Melander, Bo; Rasmussen, Ilse A. and Olesen, Jørgen E. (2020) Legacy effects of leguminous green manure crops on the weed seed bank in organic crop rotations. Agriculture, Ecosystems and Environment, 302, p. 107078.

Thorup-Kristensen, Kristian; Halberg, Niels; Nicolaisen, Mette; Olesen, Jørgen E.; Crews, Tim; Hinsinger, Philippe; Kirkegaard, John A. and Dresbøll, Dorte Bodin (2020) Digging deeper for agricultural resources, the value of deep rooting. Trends in Plant Science, 25 (4), pp. 406-417.

Thorup-Kristensen, Kristian; Halberg, Niels; Nicolaisen, Mette; Olesen, Jørgen E. and Dresbøll, Dorte Bodin (2020) Exposing Deep Roots: A Rhizobox Laboratory. Trends in plant science, 25 (4), pp. 418-419.

Liang, Zhi; Olesen, Jørgen E.; Nørgaard, Trine and Elsgaard, Lars (2020) Extraction and enzymatic assay of glucose in soils with divergent pH, clay and organic carbon contents. Communications in Soil Science and Plant Analysis, 51 (3), pp. 380-391.

Autret, Bénédicte; Mary, Bruno; Strullu, Loic; Chlebowski, Florent; Mäder, Paul; Mayer, Jochen; Olesen, Jørgen E. and Beaudoin, Nicolas (2020) Long-term modelling of crop yield, nitrogen losses and GHG balance in organic cropping systems. Science of The Total Environment, 710, p. 134597.

Hansen, Sissel; Frøseth, Randi Berland; Stenberg, Maria; Stalenga, Jarosław; Olesen, Jørgen E.; Krauss, Maike; Radzikowski, Pawel; Doltra, Jordi; Nadeem, Shahid; Torp, Torfinn; Pappa, Valentini and Watson, Christine (2019) Reviews and syntheses: Review of causes and sources of N2O emissions and NO3 leaching from organic arable crop rotations. Biogeochemistry, 16, pp. 2795-2819.

De Notaris, Chiara; Rasmussen, Jim; Sørensen, Peter and Olesen, Jørgen E. (2019) Deposition of C and N in the soil from legume-based cover crops – quantification and mineralization. To be decided, 00-00. [draft]

De Notaris, Chiara; Rasmussen, Jim; Sørensen, Peter; Melander, Bo and Olesen, Jørgen E. (2019) Manipulating cover crop growth by adjusting sowing time and cereal interrow spacing to enhance residual nitrogen effects. Field Crops Research, 234, pp. 15-25.

Zhao, Jin; De Notaris, Chiara and Olesen, Jørgen E. (2019) Using vegetation indices in autumn to estimate nitrate leaching during autumn and winter in different cropping systems. European Journal of Agronomy, X, X-X. [draft]

Hansen, Sissel; Frøseth, Randi Berland; Stenberg, Maria; Stalenga, Jarosław; Olesen, Jørgen E.; Krauss, Maike; Radzikowski, Pawel; Doltra, Jordi; Nadeem, Shahid; Torp, Torfinn; Pappa, Valentini and Watson, Christine (2018) Review of key causes and sources for N2O emmisions and NO3-leaching from organic arable crop rotations. https://doi.org/10.5194/bg-2018-455, x, x-xx. [In Press]

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.

Pandey, Arjun; Li, Fucui; Margrethe, Askegaard; 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.

De Notaris, Chiara; Rasmussen, Jim; Sørensen, Peter and Olesen, Jørgen E. (2018) Nitrogen leaching: a crop rotation perspective on the effect of N surplus, field management and use of catch crops. Agriculture, Ecosystems and Environment, 255, pp. 1-11.

Hu, Teng; Sørensen, Peter and Olesen, Jørgen E. (2018) Soil carbon varies between different organic and conventional management schemes in arable agriculture. European Journal of Agronomy, 94, pp. 79-88.

Hu, Teng; Sørensen, Peter; Wahlström, E.M.; Chirinda, Ngonidzashe; Sharif, Behzad; Li, Xiaoxi and Olesen, Jørgen E. (2018) Root biomass in cereals, catch crops and weeds can be reliably estimated without considering aboveground biomass. Agriculture, Ecosystems and Environment, 251, pp. 141-148.

Liang, Zhi; Elsgaard, Lars; Nicolaisen, Mette; Lyhne-Kjæbye, Annemette and Olesen, Jørgen E. (2018) Carbon mineralization and microbial activity in agricultural topsoil and subsoil as regulated by root nitrogen and recalcitrant carbon concentrations. Plant and Soil, None, pp. 1-18.

Liang, Zhi; Olesen, Jørgen E.; Jensen, Johannes L. and Elsgaard, Lars (2018) Nutrient availability affects carbon turnover and microbial physiology differently in topsoil and subsoil under a temperate grassland. Geoderma, 336, pp. 22-30.

Melander, Bo; Rasmussen, Ilse A. and Olesen, Jørgen E. (2016) Incompatibility between fertility building measures and the management of perennial weeds in organic cropping systems. Agriculture, Ecosystems and Environment, 220, pp. 184-192.

Li, Xiaoxi; Sørensen, Peter; Olesen, Jørgen E. and Petersen, Søren O. (2015) Evidence for denitrification as main source of N2O emission from residue-amended soil. Soil Biology and Biochemistry, 92, pp. 153-160.

Li, Xiaoxi; Sørensen, Peter; Li, Fucui; Petersen, Søren O. and Olesen, Jørgen E. (2015) Quantifying biological nitrogen fixation of different catch crops, and residual effects of roots and tops on nitrogen uptake in barley using in-situ 15N labelling. Plant and Soil, 395 (1), pp. 273-287.

Li, Xiaoxi; Petersen, Søren O.; Sørensen, Peter and Olesen, Jørgen E. (2015) Effects of contrasting catch crops on nitrogen availability and nitrous oxide emissions in an organic cropping system. Agriculture, Ecosystems & Environment , 199, 382- 393.

Noe, Egon; Alrøe, Hugo Fjelsted; Thorsøe, Martin H.; Sørensen, Peter; Melander, Bo; Olesen, Jørgen E. and Fog, Erik (2015) Knowledge Asymmetries Between Research and Practice: A Social Systems Approach to Implementation Barriers in Organic Arable Farming. Sociologia Ruralis, Early, View- .

Sørensen, Peter; Nielsen, Erling and Olesen, Jørgen E. (2014) Udbytter i det økologiske planteavlssædskifteforsøg. ICROFS-nyt, 2014 (1), pp. 8-10.

Knudsen, Marie Trydeman; Meyer-Aurich, Andreas; Olesen, Jørgen E.; Chirinda, N. and Hermansen, J.E. (2014) Carbon footprints of crops from organic and conventional arable crop rotations – using a life cycle assessment approach. Journal of Cleaner Production, 64 (2014), pp. 609-618.

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]

Laursen, K.H.; Mihailova, A.; Kelly , S.D.; Epov, V.N.; Berail, S.; Schjoerring, J.K.; Donard, O.F.X.; Larsen, E.H.; Pedentchouck, N.; Marca-Bell, A.D.; Halekoh, U.; Olesen, Jørgen E. and Husted, S. (2013) Is it really organic? - multi-isotopic analysis as a tool to discriminate between organic and conventional plants. Food Chemistry, 141, pp. 2812-2820.

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 (2), pp. 696-697.

Pugesgaard, Siri; Olesen, Jørgen E.; Dalgaard, Tommy and Jørgensen, Uffe (2013) Biogas in organic agriculture - effects on productivity, energy self-sufficiency and greenhouse gas emissions. Renewable Agriculture and Food Systems, ( ), pp. 1-14.

Petersen, Søren O.; Ambus, Per; Elsgaard, Lars; Schjønning, P. and Olesen, Jørgen E. (2013) Long-term effects of cropping system on N2O emission potential. Soil Biology and Biochemistry, 57, pp. 706-712.

Chirinda, N.; Olesen, Jørgen E. and Porter, J.R. (2012) Root carbon input in organic and inorganic fertilizer-based systems. Agriculture, Ecosystems and Environment, 359, pp. 321-333.

Jensen, Maja M.; Jørgensen, Henry; Halekoh, Ulrich; Olesen, Jørgen E. and Lauridsen, Charlotte (2012) Can agricultural cultivation methods influence the healthfulness of crops for foods. J. Agric. Food Chem., 60 (25), pp. 6383-6390.

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.

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.

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 E. and Munkholm, Lars J. (2007) Subsoil loosening in a crop rotation for organic farming eliminated plough pan with mixed effects on crop yield. Soil & Tillage Research, 94, pp. 376-385.

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.

Munkholm, Lars J. and Olesen, Jørgen E. (2005) Subsoil loosening eliminated plough pan but had variable effect on crop yield. DARCOFenews.

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.

Olesen, Jørgen E.; Chatskikh, Dmitri; Berntsen, Jørgen and Hutchings, Nicholas J. (2004) Udledning af lattergas fra græsmarker øges ved afgræsning og gødskning. FØJOenyt (4).

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.

Berntsen, Jørgen; Hauggard-Nielsen, Henrik; Olesen, Jørgen E.; Molt Petersen, Bjørn; Jensen, Erik Steen and Thomsen, Anton (2004) Modelling dry matter production and resource use in intercrops of pea and barley. Field Crops Research, 88 (1), pp. 69-83.

Olesen, Jørgen E.; Hansen, Preben Klarskov; Berntsen, Jørgen and Christensen, Svend (2004) Simulation of Above-Ground Suppression of Competing Species and Competition Tolerance in Winter Wheat Varieties. Field Crop Research, 89, pp. 263-280.

Olesen, Jørgen E. (2004) Sommer, udlæg og grøngødning. [Summer, undersown crops and green manure crops.] Økologisk Jordbrug, 24 (315), p. 6.

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.

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.

Newspaper or magazine article

Olesen, Jørgen E. (2020) Efterafgrøder er undervurderede i økologisk planteavl. Økologisk Landbrug, 28 February 2020, 653, p. 25.

Olesen, Jørgen E. (2018) Gode perspektiver for rækkedyrkning i økologisk planteavl. Økologi og Erhverv, 31 August 2018, 636, p. 26.

Olesen, Jørgen E. (2017) Rækkedyrkning giver nye muligheder i planteavlen. Økologi & Erhverv, 2017 (619), p. 14.

Olesen, Jørgen E. and Sørensen, Peter (2016) Kvælstofudvaskningen fra økologisk planteavl kan reduceres. [Nitrate leaching from organic arable farming can be reduced.] Økologi & Erhverv, 2016, 591, p. 8.

Sørensen, Peter and Olesen, Jørgen E. (2012) Kvælstoffikserende afgrøder kan hente 400 kg N pr. hektar. Landbrugsavisen 2. sektion 20. Juli 2012, p. 11. Landbrugsavisen, 20 July 2012, p. 11.

Sørensen, Peter; Nielsen, Erling and Olesen, Jørgen E. (2012) Udbytter i langvarige økologiske planteavlssædskifter. ICROFS news, 2012 (1/2012), pp. 6-7.

Olesen, Jørgen E. (2009) Climate-friendly food. Momentum 2008 (4), 2009, pp. 4-8.

Olesen, Jørgen E. (2009) Organic farming and the challenges of climate change. Ecology and Farming 44, 2009, pp. 2-5.

Olesen, Jørgen E. (2009) Sådan kan økologisk planteavl sænke udledningen af drivhusgasser. Landbrugsavisen Agro, 2009, p. 20.

Olesen, Jørgen E. and Rasmussen, Ilse A. (2007) Vårbyg giver gode udbytter i økologiske forsøg. Landbrugsavisen Agro, December 2007, p. 32.

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.

Olesen, Jørgen E. and Dalgaard, Tommy (2006) Kan økologisk jordbrug være med til at løse verdens klimaproblemer? Global Økologi, 2006, 13 (3), pp. 14-15.

Olesen, Jørgen E. (2006) Pres på bæredygtigheden. Økologisk Jordbrug, 2006, 16 (359), p. 6.

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. (2003) Fabelagtig vækstsæson. Økologisk Jordbrug, 2003 (295), p. 8.

Olesen, Jørgen E. (2003) Forberedelser til en ny vækstsæson. Økologisk Jordbrug, 2003 (273), p. 6.

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

Olesen, Jørgen E. and Thorup-Kristensen, Kristian (2003) Vælg det rigtige tidspunkt til nedpløjning af efterafgrøden. Agrologisk Tidsskrift Marken, 2003, 21 (3), pp. 26-27.

Olesen, Jørgen E. (2002) Sommer i sædskifteforsøget. Økologisk Jordbrug, June 2002 (268).

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.

Olesen, Jørgen E. (2001) Gunstige effekter af efterafgrøder i sædskifteforsøget. Økologisk Jordbrug, August 2001 (245), p. 8.

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.

Olesen, Jørgen E. (2000) Status i sædskifteforsøget. Økologisk Jordbrug, October 2000, p. 8.

Olesen, Jørgen E. (2000) Sommeren står for døren i sædskifteforsøget. Økologisk Jordbrug, June 2000, 243, 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. (2000) Europæisk forskning i sædskifter til økologisk jordbrug. Forskningsnytt om økologisk landbruk i Norden, March 2000 (2), pp. 16-17.

Olesen, Jørgen E. (2000) International forskning i økologiske sædskifter. Økologisk Jordbrug, 2000, 209, p. 8.

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

Olesen, Jørgen E. (1999) Synlige forskelle i sædskifteforsøget. Økologisk jordbrug, August 1999, p. 8.

Working paper

Muller, Adrian; Olesen, Jørgen E.; Davis, Joan; Dytrtova, Karolina; Gattinger, Andreas; Lampkin, Nicolas and Niggli, Urs (2012) Reducing Global Warming and Adapting to Climate Change: The Potential of Organic Agriculture. Working paper, Forschungsinstitut für biologischen Landbau (FiBL), CH Frick .

Conference paper, poster, etc.

Olesen, Jørgen E. (2022) A cropping systems perspective on the Danish organic arable LTE. Speech at: Studies of agroecology in long-term organic and conventional cropping systems, Aarhus University, Research Center Foulum,Tjele, Denmark, 7-8 June 2022. [Completed]

De Notaris, Chiara; Sørensen, Peter; Rasmussen, Jim and Olesen, Jørgen E. (2018) N fertilizer value of legume-based catch crops. Poster at: 20th Nitrogen workshop, Rennes, France, 24-27 June 2018. [Unpublished]

Olesen, Jørgen E.; Sørensen, Peter; Thorup-Kristensen, Kristian and Theilgaard, Malene (2017) RowCrop workshop. Workshop at: Økologikongressen 2017, 30. november 2017. [Completed]

Liang, Zhi; Elsgaard, Lars and Olesen, Jørgen E. (2017) Effect of root litter quality on carbon turnover and soil microbiology in topsoil and subsoil horizons. In: To be decided. [draft]

De Notaris, Chiara; Sørensen, Peter; Rasmussen, Jim and Olesen, Jørgen E. (2016) Row spacing and catch crop establishment in organic arable systems: a way to increase biological N fixation. Poster at: ESA14, Edinburgh, 5-9 September 2016.

Olesen, Jørgen E. and Sørensen, P. (2013) Estimating nitrogen supply and cereal crop yield in organic crop production. 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. 121-122.

Fog, Erik; Olesen, Jørgen E.; Noe, Egon; Sørensen, Peter and Melander, Bo (2013) Picture card tool for holistic planning in organic plant production. 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, 9 (3), NJF Report, pp. 153-154.

Chirinda, N.; Olesen, Jørgen E. and Porter, J.R. (2011) High Root Biomass FOR cereal crops increases carbon sequestration in organic Arable systems. Paper at: 17th IFOAM Organic world congress.

Knudsen, Marie Trydeman; Olesen, Jørgen E.; Hermansen, John E. and Meyer-Aurich, Andreas (2011) Livscyklusvurdering af økologiske og konventionelle planteavlssædskifter - fokus på drivhusgasemissioner. [Life cycle assessment of organic and conventional arable crop rotations - focusing on greenhouse gas emissions.] Speech at: Faglige følgegruppemøder med Fødevareministeriet, Aarhus University, 5.-6. September 2011. [Completed]

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.

Olesen, Jørgen E. (2009) Dyrkningssystemernes effekt på produktion og miljø. Paper at: 1st Nordic Organic Conference, Göteborg, Sweden, 18-20 May 2009.

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.

Olesen, Jørgen E. (2006) Research in organic food and farming as a tool for providing public goods. Paper at: Joint Organic Congress, Odense, Denmark, May 30-31, 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]

Munkholm, Lars J.; Olesen, Jørgen E. and Schjønning, Per (2005) Subsoil loosening eliminated plough pan but had variable effect on crop yield. In: NJF Report, NJF, 1 (1), pp. 95-98.

Hutchings, Nicholas J.; Petersen, Bjørn M.; Olesen, Jørgen E. and Berntsen, Jørgen (2004) Does modelling of spatial heterogeneity matter? Speech at: Joint meeting of COST Action 627, Ghent, Belgium, 3-4 May 2004.

Chatskikh, Dmitri; Olesen, Jørgen E. and Berntsen, Jørgen (2004) Modelling of N2O emissions from grasslands in Denmark. Speech at: Joint meeting of COST Action 627, Ghent, Belgium, 3-4 May 2004.

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]

Chatskikh, Dmitri; Olesen, Jørgen E.; Berntsen, Jørgen; Regina, Kristiina and Yamulki, Sirwan (2003) A study of the N2O emission from grassland with the FASSET farm model. Poster 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

Olesen, Jørgen E.; Sørensen, Peter; Melander, Bo; Bertelsen, Inger and Nielsen, Erling (2018) RowCrop workshop til Store Markdag 2017. .

Noe, Egon; Sørensen, Peter; Melander, Bo; Olesen, Jørgen E.; Hermansen, Sven; Bertelsen, Inger and Fog, Erik (2012) Muligheder og barrierer for implementering af principper for robuste og højtydende planteavlssædskifter i praksis – Grundlagsrapport for barrierer undersøgelsen. Aarhus University , Department of Agroecology.

Djurhuus, Jørgen and Olesen, Jørgen E. (2000) Characterisation of four sites in Denmark for long-term experiments on crop rotations in organic farming. DIAS report, no. 33. Danish Institute of Agricultural Sciences .

Report chapter

Olesen, Jørgen E. (2015) HighCrop - Redskaber til højere produktivitet i marken. In: Skovsbøl, Ulla (Ed.) Ny viden om økologi - Resultater fra forskningsprogrammerne Organic RDD og CORE Organic, 2011-2015. ICROFS, Tjele, Denmark, pp. 26-29.

Olesen, Jørgen E. (2009) Klimabelastningen fra økologisk landbrug - hvad kan der gøres. [Climate change impact of organic farming - What can be done?] In: Blume, Steffen and Hansen, Jesper (Eds.) Økologisk Planteavlsberetning 2009. Økologisk Rådgivning, chapter 9.

Olesen, Jørgen E. (2007) Varmere klima gavner økologisk jordbrug. [Warmer climate benefits organic farming.] In: Hansen, Jesper (Ed.) Økologisk Planteavlsberetning 2007. Økologisk Rådgivning , chapter 7, pp. 55-57.

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

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.

Knudsen, Marie Trydeman; Halberg, Niels; Olesen, Jørgen E.; Byrne, John; Iyer, Venkatesh and Toly, Noah (2006) Global trends in agriculture and food systems. In: Halberg, Niels; Alrøe, Hugo Fjelsted; Knudsen, Marie Trydeman and Kristensen, Erik Steen (Eds.) Global Development of Organic Agriculture - Challenges and Prospects. CABI Publishing, chapter 1, pp. 1-48.

Project description

{Project} RowCrop: Højere udbytter med rækkedyrkning og efterafgrøder. Runs 2014 - 2017. Project Leader(s): Olesen, Jørgen E., Aarhus Universitet (AU) .

Data set

De Notaris, Chiara; Jensen, Johannes L.; Olesen, Jørgen E.; da Silva, Tiago Stumpf; Rasmussen, Jim; Panagea, Ioanna and Rubæk, Gitte H. (2021) Long-term soil quality effects of soil and crop management in organic and conventional arable cropping systems. .

Teaching resource

Olesen, Jørgen E. (2020) Organic farming as a climate solution? [Er økologisk jordbrug en klimavenlig løsning?] Aarhus University.

Web product

De Notaris, Chiara; Rasmussen, Jim; Sørensen, Peter and Olesen, Jørgen E. (2018) Legume-based cover crops benefit crop yield and reduce nitrate leaching. .

Hu, Teng; Sørensen, Peter and Olesen, Jørgen E. (2018) Larger root biomass in organic than conventional farming systems. , ICROFS News. Online at http://icrofs.dk/en/aktuelt/nyheder/viewnews/artikel/larger-root-biomass-in-organic-than-conventional-farming-systems/, accessed on: 8 April 2018.

Hu, Teng; Sørensen, Peter and Olesen, Jørgen E. (2018) Soil organic carbon change in arable farming under organic and conventional management. . Online at http://icrofs.dk/en/aktuelt/nyheder/viewnews/artikel/soil-organic-carbon-change-in-arable-farming-under-organic-and-conventional-management/, accessed on: 9 April 2018.

Pandey, Arjun and Olesen, Jørgen E. (2016) Greater biological N fixation requires good management. ICROFS. Online at http://icrofs.dk/en/aktuelt/nyheder/viewnews/artikel/greater-biological-n-fixation-requires-good-management/, accessed on: 13 May 2016.

Other

Olesen, Jørgen E. (2019) ClimOptic: Ny klimaeffektiv gødning til økologisk planteavl. Institut for Agroøkologi, Aarhus Universitet .

This list was generated on Sat Aug 16 10:08:57 2025 CEST.