Effect of Bradyrhizobium sp.Inoculation on Biomass and Nodulation of Cowpea

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Vigna unguiculata(L.)Walp (cowpea)is a tropical legume of very high nutrive and economic values.A laboratory experiment.was conducted to evaluate the BNF (biological nitrogen fixation) effciency of 4 strains of Bradyrhizobium sp.(VUXYI,VUIE1,VUMDS1 and VU
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