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Legume catch crops for reducing N leaching and substituting animal manure

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.

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Summary

Organic cereal production on coarse sandy soil is a challenge because of low soil fertility and a general limitation on the use of animal manure. The possible exclusion of conventional animal manure in organic crop production increases the challenge further. Two factorial experiments were carried out aiming at investigating the potential of legume catch crops with respect to residual effects and effects on N leaching. Legume catch crops were compared with non-legume catch crops in systems with spring barley as the main crop each year. Grain yields were determined and N leaching losses measured by means of installed ceramic suction cups. The legume catch crops, especially white clover and red clover, showed large residual effects in succeeding spring barley, and clover was efficient in reducing N leaching losses. A clover catch crop had the potential to replace animal manure but attention should be paid to the risk for poor growth in soil recently cropped to clover.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Keywords:low soil fertility, catch crop species, residual effect
Subjects: Environmental aspects
Soil > Nutrient turnover
Crop husbandry > Production systems > Cereals, pulses and oilseeds
Research affiliation: International Conferences > 2008: IFOAM OWC: Research Track / ISOFAR > 2.2 Nutrient management
Deposited By: Askegaard, Margrethe
ID Code:11485
Deposited On:22 Sep 2008
Last Modified:12 Apr 2010 07:35
Document Language:English
Status:Published
Refereed:Peer-reviewed and accepted
Additional Publishing Information:This paper is published in the conference proceedings:
Neuhoff, Daniel; Halberg, Niels; Alfldi, Thomas; Lockeretz, William; Thommen, Andreas; Rasmussen, Ilse A.; Hermansen, John; Vaarst, Mette; Lck, Lorna; Carporali, Fabio; Jensen, Henning Hgh; Migliorini, Paola and Willer, Helga, Eds. (2008) .Cultivating the Future Based on Science. Proceedings of the Second Scientific Conference of the International Society of Organic Agriculture Research (ISOFAR), held at the 16th IFOAM Organic World Congress in Cooperation with the International Federation of Organic Agriculture Movements (IFOAM) and the Consorzio ModenaBio, 18 . 20 June 2008 in Modena, Italy.. International Society of Organic Agriculture Research (ISOFAR), c/o IOL, DE-Bonn, Research Institute of Organic Agriculture FiBL, CH-Frick. http://orgprints.org/13672 and http://orgprints.org/13674

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