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Pot experiments were used to test the effect of incorporating various organic materials in the soil on the nodulation of peas (Pisum sativum). Only farmyard manure gave a consistent increase in the number and weight of nodules, and also in plant growth, increases which were also produced by the aqueous extract of farmyard manure, although none of these increases were as large as those obtained by the addition of a combination of P and K fertilizers or activated vermiculite. Field beans [Viciafaba) and French beans (Phaseolus vulgaris) in general reacted in the same way as peas.

S U M M A R YFollowing preliminary work in the previous year, further field trials were carried out with strains of the pearl lupin (Lupinus mutabilis Sweet) at Oxford, England. Two strains originating in Argentina and one in Bolivia were considered to show promise for development as crop plants in England if toxic alkaloids can be bred out of them. The seeds harvested had a crude protein content from 38-6 to 41 -8% and an oil content from 13' 1 to 14-4%. Advice is given, based on these trials, on sowing date and spacing.