Developing novel farming systems: effective use of nutrients from cover crops in intensive organic farming

G.J.H.M. van der Burgt, J.M.S. Scholberg, C.J. Koopmans

Research output: Chapter in Book/Report/Conference proceedingConference paperAcademic

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.
Original languageEnglish
Title of host publicationOrganic 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
Pages32-35
Publication statusPublished - 2011
EventOrganic is life - knowledge for tomorrow. Proceedings of the third scientific conference of the International Society of Organic Agriculture Research (ISOFAR) -
Duration: 28 Sep 20111 Oct 2011

Conference

ConferenceOrganic is life - knowledge for tomorrow. Proceedings of the third scientific conference of the International Society of Organic Agriculture Research (ISOFAR)
Period28/09/111/10/11

Keywords

  • fertilizer application
  • organic farming
  • cover crops
  • field tests
  • soil fertility
  • lucerne
  • grass-clover swards

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