Ministerium für Energiewende, Landwirtschaft, Umwelt, Natur und Digitalisierung des Landes Schleswig-Holstein
Schleswig-Holstein
Mercatorstraße 3
24106 Kiel
Website: External link to the authority
Sustainable yield increase in ecological cash cropping as a result of individually optimized catch cropping
The preservation and enhancement of soil fertility are especially in organic farming the basis of long-term, sustainable development. This includes the enhancement of soil life, as well as the supply of soil nutrients. With increasing specialization of organic farms ,new, individual farms need to develop strategies to increase soil fertility in organic crop production. The OG Nutrient Management and Yield Increase in Ecological Cash Cropping will develop innovative solutions to increase profitability performance by a catch crop in organic crop production. The goal of this project is to evaluate and compare the potential of different catch crops and strategies of catch cropping between different site types in connection with soil preservation and enhancement of soil fertility. The related yield performance of the following crops is studied at the participating farms and at agricultural experiment stations.
Exact trials have shown that higher nitrogen losses are to be expected in the post-harvest period, particularly when growing grain legumes. The subsequent cultivation of catch crops led to a significant minimisation of environmentally relevant N emissions in the form of nitrate leaching and nitrous oxide emissions. The freezing catch crops turned out to be unfavourable under northern German weather conditions. Premature mineralisation of the previously bound nitrogen from the dead plant components led to an earlier release of nitrogen in February-March and thus to undesirable nitrogen losses. Taking all the test parameters into account, the winter-hardy undersown catch crop showed the greatest potential for successful nitrogen transfer over the winter. The simultaneously higher carbon input can have a positive long-term effect on the soil humus content.
Rural development 2014-2020
Landwirtschaftskammer
Grüner Kamp 15-17
24768 Rendsburg
Phone: 04331-9453300
Email: mmueller@lksh.de
2015
completed
375,174
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