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Crop rotation and crop management effects on cereal yields in arable organic farming in Denmark

Olesen, J.E.; Askegaard, M.; Rasmussen, I.A. and Kristensen, K. (2011) Crop rotation and crop management effects on cereal yields in arable organic farming in Denmark. In: Neuhoff, Daniel; Halberg, Niels; Rasmussen, Ilse A.; Hermansen, John; Ssekyewa, Charles and Sohn, Sang Mok (Eds.) Organic is Life - Knowledge for Tomorrow. Organic Crop Production. Proceedings of the Third Scientific Conference of the International Society of Organic Agriculture Research, 1, pp. 280-283.

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Summary

One of the main challenges in organic crop production is to ensure high and stable crop yields. In this study we used data from a 12 year old crop rotation experiment in Denmark to estimate the contribution of various management factors to yields of winter and spring cereals. The experiment included three factors in two replicates: 1) Grass-clover green manure crop (with and without), 2) catch crop (with and without), and 3) animal manure (with and without). Animal manure was the most important factor for increasing grain yield of cereal crops, but also grass-clover and catch crop contributed considerably to increasing yields. The grass-clover had a larger long-term effect on grain yields on the sandy loam soils than on the sandy soil. Yields were significantly reduced by weeds, and maintaing stable yields requires good weed control and prevention measures.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Cereals, manure, catch crops, grass-clover, weeds
Subjects: Crop husbandry > Crop combinations and interactions
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Farming Systems > Farm nutrient management
Research affiliation: Denmark > DARCOF III (2005-2010) > CROPSYS - The effect of cropping systems on production and the environment
Denmark > Organic RDD > HighCrop
International Conferences > 2011: IFOAM OWC: 3rd ISOFAR Scientific Conference
International Conferences > 2011: IFOAM OWC - Organic is Life
Related Links:http://www.icrofs.org/Pages/Research/organicrdd_highcrop.html, http://www.icrofs.org/Pages/Research/darcofIII_cropsys.html
Deposited By: Rasmussen, Researcher Ilse A.
ID Code:20050
Deposited On:14 Dec 2011 13:11
Last Modified:14 Dec 2011 13:11
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted

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