Aman Parashar, Jaidev Sharma, Shama Parveen and Pradeep Kumar Kanaujiya
Abstract
Afield experiment was conducted at the Crop Research Centre of School of Agriculture, ITM University, Gwalior, (M.P.) during Rabi 2021â22 and 2022â23 to study the influence of phosphorus and bio-fertilizers on productivity and profitability of summer black gram under sub-tropical condition of Madhya Pradesh. The experiment was laid out in factorial randomized block design by taking four levels of phosphorus viz. 0 kg P2O5 ha-1, 30 kg P2O5ha-1, 40 kg P2O5 ha-1, 50 kg P2O5 ha-1 and bio-fertilizers (No inoculation, PSB, Rhizobium, PSB + Rhizobium which were replicated thrice. The chickpea variety âJG-16â was uniformly fertilized by 20 kg N/ha through Urea. However, phosphorus and bio-fertilizers were applied as per the requirement of the treatments. The crop was managed as per the recommended package and practices. The experimental study revealed that among the phosphorus levels, the application of 50 kg P/ha recorded significantly high seed and stover yield. However, among the bio-fertilizers, application of Phosphate solubilizing bacteria + Rhizobium resulted in highest seed and stover yield of chickpea. Among the economic analysis, application of 50 kg ha-1 phosphorus and combined treatment of Phosphate solubilizing bacteria+ Rhizobium incurred the highest cost of cultivation, highest gross return, net return and Benefit cost ratio. Therefore, for chickpea cultivation, application of 50kg ha-1 phosphorus and treatment of Phosphate solubilizing bacteria+ Rhizobium was proved to be profitable.