Effect of organic sources and nutrients on growth parameters of Sorghum (Sorghum Bicolor L.) crop

The present study evaluated the influence of integrated application of organic and inorganic nutrient sources on key growth parameters of sorghum during two consecutive seasons (2023-24 and 2024-25). Treatments comprising chemical fertilizers, organic manures, and biofertilizers were assessed for their effects on plant height, number of branches, and leaf area at different growth stages. The results clearly indicated that integrated nutrient management significantly enhanced all growth attributes compared to the control. Among the treatments, application of 100% Recommended Dose of Fertilizers (RDF) along with Azotobacter and Phosphate-Solubilizing Bacteria (PSB) consistently recorded the maximum plant height, number of branches, and leaf area at all growth stages and at harvest during both years. The treatment integrating 75% RDF with vermicompost and biofertilizers emerged as the next best option. The control treatment recorded the lowest values for all growth parameters. Improved growth under integrated treatments was attributed to balanced nutrient availability, enhanced microbial activity, and improved nutrient uptake. Overall, the study highlights the effectiveness of integrating organic manures and biofertilizers with inorganic fertilizers in promoting vigorous vegetative growth of sorghum and sustaining crop productivity.