Inoculum for Rhizobium was prepared in yeast mannitol (YM) broth (Somasegaran & Hoben, 1985) by inoculating autoclaved YM with Rhizobia (1 mL) and placed in shaker at 28oC. Inoculum for PSB was prepared in Pikovskaya medium by the same procedure. Inoculation @10 mL per seedling was done at log phase i.e., about 108 cells mL-1 at the base of plant. Five plants per pot were kept after thinning and grown until maturity to get final yield.