Effect of integrated nutrient management on growth, yield, and economics of green gram (Vigna radiata L.)

A field experiment was conducted at the Research Farm, Department of Agronomy, AKS University, Satna (M.P.), during the Kharif season of 2024-25 to evaluate the effect of integrated nutrient management (INM) on the performance of green gram (Vigna radiata L.) in terms of growth, yield attributes, yield, quality, and economics. The experiment was laid out in a randomised block design (RBD) comprising nine treatments and three replications. The experiment was laid out in a Randomised Block Design (RBD) with nine treatments and three replications. The treatments were: T₁ - Control, T₂ - 100% RDF (20:40:30 kg N:P₂O₅:K₂O ha⁻¹), T₃ - 75% RDF + 5 t FYM ha⁻¹, T₄ - 50% RDF + 5 t FYM ha⁻¹, T₅ - 25% RDF + 5 t FYM ha⁻¹, T₆ - 75% RDF + 5 t vermicompost ha⁻¹, T₇ - 50% RDF + 5 t vermicompost ha⁻¹, T₈ - 25% RDF + 5 t vermicompost ha⁻¹, and T₉ - 5 t FYM ha⁻¹ + 5 t vermicompost ha⁻¹. The results revealed that the treatment T₆ (75% RDF + 5 t vermicompost ha⁻¹) recorded the highest plant height (47.43 cm at harvest), number of branches per plant (7.87 at harvest), root nodules (29.87 per plant at 40 DAS), number of pods per plant (28.40), seeds per pod (10.13), test weight (44.89 g), grain yield (1225 kg ha⁻¹), stover yield (2050 kg ha⁻¹), and protein content (25.9%). It also recorded the maximum net monetary return (₹47,375 ha⁻¹) and benefit: cost ratio (2.61). The lowest values for these parameters were observed in the control treatment (T₁). The study concludes that the integrated use of 75% RDF and 5 t ha⁻¹ vermicompost (T₆) is a superior and sustainable nutrient management strategy for enhancing productivity and profitability in green gram cultivation. The study concluded that the integrated application of 75% RDF with 5 t ha⁻¹ vermicompost is optimal for improving green gram productivity and profitability under the agro-climatic conditions of Satna.