Integrated Nutrient Management Approach for Increasing Growth, Yield and Economics of Onion (Allium cepa L.)

An investigation was carried out at Bihar Agricultural College, Sabour, (Bhagalpur) to find out the effect of integrated use of inorganic and organic fertilizers on growth and yield of onion. An application of 25% N of RDF as inorganic + 75% N from poultry manure as organic source showed significant influence on plant height (51.2 cm), number of leaves/ plant (8.56), length of leaves (42.92 cm), number of scales/ bulb (9.13), bulb length (5.75 cm), bulb diameter (5.85 cm), average bulb weight (49.64 gm), bulb volume (60.28 cc), total yield (288.41 q/ha) with highest trend in this treatment, which was found better over the 25% N of RDF as inorganic + 75% N from vermicompost, sole application of poultry manure (100% N of RDF was supplemented through poultry manure) and remaining all treatments.