Effect of integrated nitrogen management on growth, yield, quality and post-harvest nutrient status of soil in aerobic rice (Oryza sativa L.)

An experiment was conducted at S. V. Agricultural College Farm, Tirupati in the Southern Agro-climatic Zone of Andhra Pradesh to study the effect of integrated nitrogen management practices in aerobic rice on growth, yield, quality and post-harvest nutrient status of soil. The experiment was conducted in randomized block design, replicated thrice with 10 treatments viz., control (No nitrogen), 100% N through fertilizer, 25% N through FYM+75% fertilizer N, 50% N through FYM+50% fertilizer N, 75% N through FYM+25% fertilizer N, 100% N through FYM, 25% N through neem leaf manure (NLM)+75% fertilizer N, 50% N through NLM+50% fertilizer N, 75% N through NLM+25% fertilizer N and 100% N through NLM. The study revealed that 100% N through fertilizer recorded higher values of growth, yield and quality, but it was on par with 25% N through FYM+75% fertilizer N and 25% N through NLM+75% fertilizer N. Post-harvest soil fertility status was found to be significantly improved with 100% N through NLM, 100% N through FYM, 75% N through NLM+25% fertilizer N and 75% N through FYM+25% fertilizer N.