Effect of Integrated Nutrient Management on Productivity and Economics of Rabi Onion (Allium cepa L)

The present investigation was conducted to know the effect of integrated nutrient management (INM) on productivity and economics of rabi onion (Allium cepa L.) cultivar PRO 6. The experiment was laid out in randomized block design with twelve treatments with three replications viz., T₁: Control, T₂: 100% Recommended dose of nitrogenous fertilizers (RDNF), T₃: 75% RDNF + 25% N Farm yard manure (FYM), T₄: 75% RDNF + 25% N Vermicompost (VC), T₅: 75% RDNF + 25% N Poultry manure (PM), T₆: 50% RDNF + 50% N (FYM), T₇: 50% RDNF + 50% N (VC), T₈: 50% RDNF + 50% N (PM), T₉: 50% RDNF + 25% N (FYM) + 25% N (VC), T₁₀: 50% RDNF + 25% N (FYM) + 25% N (PM), T₁₁: 50% RDNF + 25% N (VC) + 25% N (PM), T₁₂: 25% RDNF + 25% N (FYM) + 25% N (VC) + 25% N (PM). The results revealed that among different treatments, T₂ (RDNF) recorded maximum plant height (64.60 cm), number of leaves (10.47), bulb diameter (7.26cm), fresh weight of bulb (73.13g), dry weight of bulb (9.29g), dry weight of leaves (1.19g) per plant and bulb yield (421.23q/ha) in terms of growth and yield attributes whereas lowest observation were recorded with treatment T₁ (control). Treatment T₂ also recorded highest net return (Rs 2, 44, 286/ha) and B: C ratio (1.63).