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The long-term agronomic performance of organic stockless rotations

Welsh, James P; Philipps, Lois and Cormack, William F (2002) The long-term agronomic performance of organic stockless 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. 47-50.

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Summary

This report was presented at the UK Organic Research 2002 Conference. Two long-term experiments were established with the aim of evaluating the agronomic and economic performance of organic stockless rotations. In total, four different rotations were evaluated at two sites in the south (Elm Farm Research Centre) and east (ADAS Terrington) of England. All of the rotations included either a one or two-year red clover green manure crop to provide nitrogen for subsequent crops and it was found that this was sufficient to support three or four years of arable cropping. Over a period of eleven years at EFRC and five years at ADAS Terrington, there was no evidence of a decline in crop yield, although there were significant year-to-year variations. Crop yields were generally equivalent to or greater than average organic yields. Levels of soil available P and K was maintained at both sites at non-limiting levels. Pest and diseases were not problematic, but perennial weeds posed the most significant problem.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Paper
Keywords:Colloquium of Organic Researchers; COR; stockless; arable crops; agronomic performance; economics; legumes
Subjects: Crop husbandry > Crop combinations and interactions
Farming Systems
Farming Systems > Farm economics
Research affiliation: UK
UK > Organic Research Centre (ORC) - Elm Farm
UK > Colloquium of Organic Researchers (COR) > COR 2002
UK > ADAS
Deposited By: Powell, Ms Jane
ID Code:8359
Deposited On:23 Oct 2006
Last Modified:12 Apr 2010 07:33
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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