Influence of Integrated Nutrient Management on Yield and Quality of Onion

The steady depletion of native soil fertility and the occurrence of multiple nutrient deficiencies in onion fields have led to the identification of nutrient management as a key factor limiting sustainable onion production. An experiment was carried out to study the Influence of integrated nutrient management on yield and quality of onion at Horticulture Research Farm, College of Horticulture, AAU, Anand during the three consecutive years 2021-22, 2022-23 and 2023-24. The experiment was laid out in Randomized Block Design with three replications and comprises twelve different integrated nutrient treatments along with control (RDF 75:60:50 NPK kg/ha) treatments and application of sulphur (20 kg and 40 kg/ha). Application of 50% RDN through VC+ 50% RDF + 40 kg S recorded maximum bulb equatorial diameters (6.13 cm), bulb weight (65.54 g) and bulb yield (42.83 t/ha) in pooled analysis. Whereas, maximum fibre content (5.66%) observed in application of 100% RDF (75:60:50 NPK kg/ha) + 40 kg S. While, TSS, phenol content, pyruvic acid and sulphur content in onion bulb were found non-significant in pooled data.