Impact of Integrated Nutrient Management on Yield Parameters of Onion (Allium cepa L.) cv. Pusa Red

The present study was conducted to find out the effect of integrated nutrient management (INM) on yield parameters of onion (Allium cepa L.) Cv. Pusa Red under Western Uttar Pradesh condition in the year 2019-20 and 2020-21 during rabi season at Horticultural Research Farm, Department of Horticulture, Chaudhary Charan Singh University, Meerut (U.P) India. The experiment was laid out in randomized block design with three replications and a total number of fourteen treatments were evaluate for yield and its attributing parameters of onion. Among all the treatments, soil application of 75% RDF through chemical fertilizers with Vermicompost @ 12.5 q/ha & Azospirillum @ 5 kg/ha was found significantly superior over all other treatments concerning yield. Maximum number of scales per bulb (7.17), diameter of bulb (6.86 cm), fresh weight of bulb (46.39 g), dry weight of bulb (21.47 g) and yield (308.54 q/ha) were recorded with treatment T₈ (75% RDF + Vermicompost @ 12.5 q/ha + Azospirillum @ 5 kg/ha). Whereas, minimum number of scales per bulb (4.04), bulb diameter (4.66 cm), fresh weight of bulb (36.03 g), dry weight of bulb (9.05 g) and yield (239.63 q/ha) was observed with the treatment T₁ (control).