Robson, M. C.; Robinson, D.; Leitch, Malcolm H.; Watson, C. A.; Litterick, A. M.; Lampkin, Nic H.; Leifert, Carlo; Fowler, Sue M.
(2002)
Organic farming principles dictate that cereals cannot be grown continuously, and in practice they are rarely grown for more than 50%of the rotation. Choice of break crops to grow in addition to cereals and the fertility ...