Effect of combined application of phosphatic fertilizers and organic adjuvants on growth and yield of green gram (Vigna radiata L.)

A field experiment was conducted at Research farm of the Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala during Summer season of 2023 to determine the "Effect of combined application of phosphatic fertilizers and organic adjuvants on growth and yield of green gram (Vigna radiata L.)". The experiment was laid out in a Factorial Randomized Block Design (FRBD) with three replications and five treatments (Control, 100% RDF (N - 20 Kg through urea, P₂O₅ - 40 Kg through SSP, K₂O – 20 Kg through MOP, 25 Kg Zn through ZnSo₄), 100% RDF + 25% higher P₂O₅, 100% RDF + 25% P₂O₅ through vermicompost, and 100% RDF + 25% P₂O₅ through vermicompost + Rhizobium + PSB) applied to two varieties PDM-139 and MH-421. The data was recorded on plant growth, yield attributes and yield. The results revealed that highest plant height (cm), number of leaves plant^-1, number of branches plant^-1 and dry weight (g plant^-1) was recorded with the application of 100% RDF+25% P₂O₅ through vermicompost + Rhizobium +PSB and the lowest was recorded in control. Maximum grain yield (q ha^-1), stover yield (q ha^-1), biological yield (q ha^-1) and harvest index (%) was recorded with 100% RDF+ 25% P₂O₅ through vermicompost + Rhizobium + PSB while the minimum was recorded in Control. Highest gross return (₹ ha^-1), net return (₹ ha^-1) and B:C was recorded in 100% RDF + 25% P₂O₅ through vermicompost + Rhizobium + PSB and the lowest was recorded in control.