Fertilizer nitrogen and growth regulators for field beans (Vicia faba L.):I. The effects of seed bed applications of large dressings of fertilizer nitrogen and the residual effects on following winter wheat

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Abstract
SUMMARY Applying large dressings of fertilizer nitrogen to the seed bed lessened nodulation of spring field beans by as much as 50%. The largest mean responses to broadcast nitrogen ranged from 1·9 cwt grain/acre in 1967 (3 cwt N/acre) to 3·1 cwt grain in 1966 (3 cwt N/acre). About one-sixth of the nitrogen applied to beans was used by a following winter wheat at Rothamsted, one-twelfth at Woburn. The results suggest that there is no prospect for the economic use of fertilizer nitrogen in the seed bed for spring beans.