Madhudwisha Chetia, T. Gohain, Sara Hansepi, Rinu Sakhong and Megolhoukho Salhu
Abstract
Organic rice cultivation is an integral sustainable farming system, offering ecological benefits while enhancing soil fertility, crop resilience, and long-term productivity. A field investigation was conducted during the kharif of 2024 at the Agronomy Experimental Farm, School of Agricultural Sciences (SAS), Nagaland University, Medziphema Campus, under the title âResponse of glutinous rice cultivar: Aghoni Bora to different organic inputs under the upland conditions of Nagalandâ. The study aimed to evaluate the influence of various organic amendments on growth traits, yield components and economics of a glutinous rice cultivar popularly grown in Assam. The experimental design comprised nine treatment combinations involving differential doses of farmyard manure (FYM), vermi-compost (VC) and bio-enriched organic manure (BEOM). The results demonstrated statistically significant variations in key growth parameters, including plant height, plant population density, tiller number, green leaf count, leaf area index (LAI), and crop growth rate (CGR). However, relative growth rate (RGR) remained unaffected across treatments. Among the yield-contributing traits, treatment T9 (FYM @ 2.5 t ha-¹ + VC @ 2.5 t ha-¹ + BEOM @ 2.5 t ha-¹) exhibited superior performance, recording the highest values for panicle count (182.53 m-²), grains per panicle (281.67), filled grain percentage (81.33%), grain yield (3706.67 kg ha-¹), straw yield (8964.67 kg ha-¹), biological yield (11387.67 kg ha-¹) and harvest index (31.67%). Test weight did not show significant variation among treatments. Economic analysis revealed that the highest benefit-cost ratio was achieved with T3 (FYM @ 10 t ha-¹), whereas the maximum gross monetary return was associated with T9, indicating the agronomic and economic viability of integrated organic nutrient management in rice cultivation.