Effect of Integrated Nutrient Management on Growth of Onion (Allium cepa L.) cv. Pusa Shobha

Aim: The objective of the research was to study the effect of integrated nutrient management on growth of onion (Allium cepa L.) cv. Pusa Shobha Study Design: The experiment was laid out in Randomized Block Design (RBD) with three replications. Place and Duration of Study: The experiment conducted during Rabi season in the year of 2021-22 and 2022-23 both the year at Horticulture Research Farm, Babasaheb Bhimrao Ambedkar University (A Central University), Vidya Vihar Raebareli Road Lucknow, (U.P). Methodology: The experiment was laid out in RBD with three replications, Mean and ANOVA (Analysis of Variance) was used in field experiment. The treatments consisted of T0 Control (without fertilizers), T1- 100% RDF (NPK@150:50:80 Kg/ha): T2- 100% RDF + FYM (10 t/ha); T3 -100% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha); T4 -100% RDF + FYM (10 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha); T5 -100% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha); T6 -75% RDF + FYM (10 t/ha); T7 -75% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha); T8 -75% RDF + FYM (10 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha): T9 -75% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha). T10 -50% RDF + FYM (10 t/ha); T11- 50% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha); T12- 50% RDF + FYM (10 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha);T13 -50% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha). Results: Based on the results, it is clear that the integration of organic manures and bio-fertilizers had a significant effect in enhancing growth parameters of onion and the treatment T9- 75% RDF + FYM (5 t/ha) + Vermicompost (2 t/ha) + Azotobacter (5 Kg/ha) + PSB (5 Kg/ha) is significantly different compared to other treatments as performed better with respect to growth characters such as maximum values for plant height at 30, 60 & 90DAT, number of leaves per plant at 30,60 & 90 DAT, length of leaf at 30,60 & 90 DAT of onion. Conclusion: Integrated approach of Vermicompost, FYM and biofertilizer performed better with respect to growth parameters viz. plant height, number of leaves, leaf length of onion.