Sanders, Ian; Watson, Christine; Rees, Robert and Atkinson, David (2002) Nitrogen fixation and soil nitrogen in organic ley arable rotations. In: Powell, Jane and et al. (Eds.) Proceedings of the UK Organic Research 2002 Conference, Organic Centre Wales, Institute of Rural Studies, University of Wales Aberystwyth, pp. 85-88.
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Summary
This report was presented at the UK Organic Research 2002 Conference. Nitrogen (N) fixation in a white clover/ryegrass mixture was measured in 1,2,3 and 4-year-old organically managed leys during 2000. N fixation varied between 73.7 in 1-year-old leys and 33.5 kg ha-1 in 4-year-old leys. Soil nitrate-N, grass N yield and N content of grass and clover were all lowest in 2-year-old leys and highest in 3-year-old leys. The proportion of clover nitrogen derived from the atmosphere (pNdfa) was significantly lower in 3-year-old leys.
| EPrint Type: | Conference paper, poster, etc. |
|---|---|
| Type of presentation: | Paper |
| Keywords: | Colloquium of Organic Researchers; COR; white clover; ley-arable rotation, soil nitrogen,nitrogen fixation; rotation |
| Subjects: | Crop husbandry > Crop combinations and interactions Farming Systems > Farm nutrient management |
| Research affiliation: | UK UK > Colloquium of Organic Researchers (COR) > COR 2002 UK > Scottish Rural Colleges (SRUC - previously SAC) |
| Deposited By: | Powell, Ms Jane |
| ID Code: | 8366 |
| Deposited On: | 11 Oct 2006 |
| Last Modified: | 12 Apr 2010 07:33 |
| Document Language: | English |
| Status: | Published |
| Refereed: | Not peer-reviewed |
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