A field experimept was carried out at Udaipur during kharif, 1996 to study the effect of phosphorus and biofertilizers on yield, nutrient content and uptake by black gram. The crop yield, Nand P content and uptake by grain and straw both, significantly increased upto 60 kg P2O5/ha. Dual inoculation of seeds with phosphate solubilizing bacteria (Bacillus megaterium var. Phosphaticuir.) and Rhizobium caused a significant increase in yield, N and P content and uptake in grain and straw over alone inoculation and control. However, single inoculation with PSB or Rhizobium were found at par.