Effect of Integrated Nutrient Management on Growth, Yield Attributes, and Productivity of Green Gram (Vigna radiata L.)

A field experiment was conducted at the Instructional Farm, Rajasthan College of Agriculture, MPUAT, Udaipur, during the Kharif season of 2024 to study the effect of integrated nutrient management (INM) on green gram (Vigna radiata L.) growth, yield attributes and productivity. The trial was designed in a randomized block design, with twelve treatments replicated three times. The treatments involved different combinations of chemical fertilizers (RDF), farm yard manure (FYM), vermicompost and seed inoculation with Rhizobium and phosphate solubilizing bacteria (PSB). The experimental soil was clay loam in texture, low in available nitrogen, medium in phosphorus, and high in potassium with adequate levels of DTPA-extractable micronutrients (Zn, Fe, Mn and Cu). The combined application of 50% RDF with 1 t ha⁻¹ each of vermicompost and FYM, along with Rhizobium + PSB (T12), led to a significant enhancement in plant height at harvest (64.11 cm), number of branches plant-1 (6.06), number of effective root nodules plant-1 at 40 DAS (37.75), number of pods plant-1 (32.14), number of seeds pod (12.64), test weight (43.80 g), seed yield (1350.60 kg ha⁻¹) and biological yield (3390.90 kg ha⁻¹). These values significantly outperformed the absolute control treatment (T1). The results emphasize the advantage of nutrient synergy in INM systems, highlighting their potential to enhance crop productivity through sustainable and balanced nutrient inputs.