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Record number 411687
Title Developing novel farming systems: effective use of nutrients from cover crops in intensive organic farming
Author(s) Burgt, G.J.H.M. van der; Scholberg, J.M.S.; Koopmans, C.J.
Source In: Organic is life - knowledge for tomorrow. Proceedings of the third scientific conference of the International Society of Organic Agriculture Research (ISOFAR) 28 September - 1 October 2011. - - p. 32 - 35.
Event Organic is life - knowledge for tomorrow. Proceedings of the third scientific conference of the International Society of Organic Agriculture Research (ISOFAR), 2011-09-28/2011-10-01
Department(s) Biological Farming Systems
PE&RC
Publication type Contribution in proceedings
Publication year 2011
Keyword(s) bemesting - biologische landbouw - dekgewassen - veldproeven - bodemvruchtbaarheid - luzerne - grasklaver - fertilizer application - organic farming - cover crops - field tests - soil fertility - lucerne - grass-clover swards
Categories Fertilizers, Fertilizer Application / Alternative Farming
Abstract On-farm nitrogen fixation is a driving force in organic agriculture. The efficiency with which this nitrogen is used can be increased by using alfalfa or grass-clover crops directly as fertilizer on other fields: cut-and-carry fertilizers. In two crops in two years, the use of several types of alfalfa and grass-clover as fertilizer is compared with the use of poultry manure and slurry. The nitrogen use efficiency at crop level is comparable or better for the cut-and-carry fertilizers as compared to the animal manures. The relative P and K content of these fertilizers comes closer to the crop demand than that of the poultry manure. Crop yields are comparable or better when using the alfalfa or grass-clover as fertilizer. It is concluded that the cut-and-carry fertilizers are a serious alternative for manure as part of an overall farm soil fertility strategy.
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