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Published online by Cambridge University Press: 27 March 2009
Soya bean, mung bean, Bengal gram and lentil grown in nitrogenless sand culture and sprayed with suspensions of different strains of Rhizobium showed increases in dry weight, chlorophyll and N-content. In a few cases the performance of Rhizobium applied to the phyllosphere was almost as good as a seed inoculation treatment. The beneficial effect of spraying Rhizobiumstrains was independent of the specificity of cross-inoculation groups. Nitrogenase activity as indicated by acetylene reduction by the Rhizooium-leaf association varied between 460 and 723 nmol/g leaf/h.