Influence of Bio-fertilizers and Levels of Phosphorus on Growth and Yield of Cowpea (Vigna Unguiculata L.)

A field experiment was conducted during Kharif 2021 at Crop Research Farm, Department of Agronomy, SHUATS, Prayagraj (U.P). The soil of experimental plot was sandy loam in texture, nearly neutral in soil reaction (pH 7.1), low in organic carbon (0.36 %), available N (171.48 kg/ha), available P (15.2 kg/ha) and available K (232.5 kg/ha). The experiment was laid out in Randomized Block Design with ten treatments each replicated thrice on the basis of one year experimentation. The treatments which are T1: Rhizobium + Phosphorous 30kg/ha, T2: Rhizobium + Phosphorous 40kg/ha, T3: Rhizobium + Phosphorous 50kg/ha, T4: PSB + Phosphorous 30kg/ha, T5: PSB + Phosphorous 40kg/ha, T6: PSB + Phosphorous 50kg/ha, T7: Rhizobium + PSB +Phosphorous 30kg/ha, T8: Rhizobium + PSB +Phosphorous 40kg/ha, T9: Rhizobium + PSB +Phosphorous 50kg/ha are used. The results showed that application of Rhizobium + PSB + Phosphorous 50kg/ha was recorded significantly Higher Plant height (83.89 cm), Nodules/Plant (24.84), Branches/plant (4.24), Plant dry weight (18.29 g/plant), Crop growth rate (5.78 g/m2/day), Relative growth rate (0.0106 g/g/day), No. of Pods/plant (9.24), No. of Seeds/pod (11.25), Test weight (131.36 g), Seed yield (828.65 kg/ha), Stover yield (1282.58 kg/ha) and Harvest index (39.64) as compared to other treatments.