Effect of various levels of phosphorus and integrated nutrient management on growth and yield of green gram [Vigna radiata L.]

An experiment was conducted at Lil Farm Dhulkot, Dehradun to study the “Effect of various levels of Phosphorus and Integrated Nutrient Management on growth and yield of green gram [Vigna radiata L.] during zaid season of 2023 in factorial randomised block design with three different levels of phosphorus viz. P1 - 45 kg hectare-1, P2 - 60 kg hectare-1, P3 - 75 kg hectare-1 and 4 different levels of INM viz. B1 - Control, B2 – 100% RDF, B3 - PM 5 t/ha + 50% RDF, B4 – VC 5 t/ha + 50% RDF which was replicated thrice. The variety chosen was PDM – 139 (SAMRAT). The soil was sandy clayey loam with medium Phosphorus and medium Potassium with pH 6.3. Growth and yield attributing characters visualizing plant height, number of leaves, number of branches, plant dry weight (g), crop growth rate (CGR) (g/m2/day), relative growth rate (RGR) (g/g/day), number of pods plant-1, pod length plant-1, number of seeds pod-1, test weight (g), grain yield (q ha-1), stover yield (q ha-1), harvest index (%) were significantly more with the application of 75 kg Phosphorus ha-1 in comparison to 45 kg Phosphorus ha-1 and was at par with 60 kg Phosphorus ha-1. In case of INM the growth, yield attributing characters and yield were significantly more with the application of B4 -Vermicompost 5 t/ha + 50% RDF, which was significantly higher than B3 -Poultry manure 5 t/ha + 50% RDF, B2- Recommended dose of Fertilizers (25:50:25 kg NPK/ha), B1-Control. Based on present investigation it can be said that application of 75 kg Phosphorus ha-1 and 5 t ha-1 vermicompost with 50% RDF yielded maximum growth and yield attributes of green gram.