8162: Weed control in organic cereals and pulses

Davies, D.H.K. and Welsh, J.P. (2002) Weed control in organic cereals and pulses, in Younie, D.; Taylor, B.R.; Welch, J.M. and Wilkinson, J.M., Eds. Organic cereals and pulses. Papers presented at conferences held at the Heriot-Watt University, Edinburgh, and at Cranfield University Silsoe Campus, Bedfordshire, 6 and 9 November 2001, chapter 5, page pp. 77-114. Chalcombe Publications.

Summary

Weeds remain one of the most significant agronomic problems associated with organic arable crop production. It is recognised that a low weed population can be beneficial to the crop as it provides food and habitat for a range of beneficial organisms (Millington et al., 1990; Clements et al., 1994; Aebischer, 1997; Fuller, 1997; Patriquin et al., 1998). However, above critical population thresholds, weeds can significantly reduce crop yield and quality in conventional (Cussans, 1968; Hewson et al., 1973; Cousens, 1985; Cudney et al., 1989) and organic (Bulson, 1991) crops alike. The challenge for organic farmers is to manage weeds in such a way as to accommodate their beneficial effects whilst still producing an acceptable crop.

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