Effect of phosphorus and biofertilizers on yield and economics of summer green gram (Vigna radiata L.) after wheat crop

A field study was carried out at Agronomy research Farm, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya (U.P.) during Zaid season 2018-19 and 2019-20 to evaluate the effect of phosphorus and biofertilizers on yield and economics of summer green gram (Vigna radiata L.) after wheat crop. The Experiment consist of four phosphorus levels (Control, 20, 40, 60 kg P2O5 ha-1) and three Biofertilizers (PSB, Rhizobium, PSB + Rhizobium) in 12 treatment combination viz.T1- Control + PSB, T2- Control + Rhizobium, T3- Control + PSB + Rhizobium, T4- 20 kg P2O5 + PSB, T5- 20 kg P2O5 + Rhizobium, T6- 20 kg P2O5 + PSB + Rhizobium, T7- 40 kg P2O5 + PSB, T8- 40 kg P2O5 + Rhizobium, T9- 40 kg P2O5 + PSB + Rhizobium, T10- 60 kg P2O5 + PSB, T11- 60 kg P2O5 + Rhizobium, T12- 60 kg P2O5 + PSB + Rhizobium.The result revealed that when we applied 60 kg P2O5 ha-1 it gives higher yield and it is at par with 40 kg P2O5 ha-1 and in biofertilizer when PSB + Rhizobium is combindly used gives higher yield over other. Among all the treatment combinations, T12 treatment recorded maximum grain, straw, biological yield and harvest index and gave maximum values of gross return, net returns and benefit cost ratio which is closely followed by T9.