Nutrient dynamics and quality of chickpea as influenced by varied phosphorus sources and sulphur levels

The existing field experiment was laid out at Instructional Farm, COA, Swami Keshwanand Rajasthan Agricultural University, Bikaner, Rajasthan during Rabi 2021-22, to determine the nutrient content (nitrogen, phosphorus and potash), uptake (nitrogen, phosphorus and potassium) by seed, straw and total protein content and biological values of chickpea seed under different sources of phosphorus and sulphur levels. This experiment was carried out in factorial randomized block design comprising three phosphorus sources (32 kg P ha^-1) through DAP, SSP and PROM, three sulphur levels and control (control, 20, 40 and 60 kg ha^-1) with three replications. The significantly higher nutrient content and uptake enhanced by microbial activity (Rhizobacteria), and total protein content in seed, net returns and benefit-cost ratio was recorded by the application of 32 kg P₂O₅ ha^-1 through PROM over phosphorus application through DAP and SSP. Moreover, application of 40 kg S ha^-1 recorded higher amounts of nutrient (nitrogen, phosphorus and potassium) uptake.