Vol. 9, Special Issue 9, Part Q (2025)

A field experiment was conducted to study the "Effect of INM based customised multinutrient briquette on yield, micronutrient content and nutrient use efficiency of rainfed Bt cotton" at E. A. D. farm, College of Agriculture, Nagpur, (2024-25) to investigate the impact on yield, micronutrient content and nutrient use efficiency of rainfed Bt cotton. The results of the present study revealed that seed cotton yield was significantly influenced by the application of different treatments. The maximum yield of 14.30 q ha^-1 was recorded with the application of 100% RDF. An increase of 37.71 to 50.34 per cent in seed cotton yield was observed across the various treatments over the absolute control, highlighting the beneficial effect of balanced fertilization. The available micronutrient status of soil, as influenced by various treatments. Among micronutrients, zinc remained in the low fertility range, indicating the possibility of its deficiency for cotton growth. The highest nutrient use efficiency was observed with 100% RDF, recorded 35.88% for nitrogen, 20.08% for phosphorus and 44.70% for potassium when compared with absolute control. These results clearly demonstrate that balanced fertilization, either through RDF or multinutrient briquettes, significantly enhanced seed cotton yield and nutrient use efficiency without causing major changes in soil reaction or organic matter status.