Vol. 11, Issue 7 (2022)

Author(s):
KB Asodariya, HL Sakarvadia, LC Vekaria, HP Ponkia and RK Rathod

Abstract:
A field experiment was carried out on medium black calcareous soil during rabi season of 2018-19 and 2019-20 at Junagadh Agricultural University, Junagadh, Gujarat to evaluate the effect of foliar application of various fertilizers on growth, yield and nutrients uptake by onion (Allium cepa L.). The results revealed that the application of RDF + 1% foliar spray of WSF and Banana pseudostem sap at 45 and 60 DAT gave significantly higher value of available N, P₂O₅, K₂O and S in soil after harvest of onion. While, effect of different fertilizers on micronutrients content in soil was found non-significant. Significantly higher value of plant height, bulb polar diameter, bulb equatorial diameter, average bulb weight and bulb yield were recorded with RDF + 1% foliar spray of WSF and Banana pseudostem sap at 45 and 60 DAT. The magnitude of increased in bulb yield in pooled results were 13.01and 12.14% owing to application of RDF + 1% foliar spray of WSF and Banana pseudostem sap at 45 and 60 DAT and RDF + 1% foliar spray of WSF and Grade IV at 45 and 60 DAT, respectively over control. The application of RDF + 1% foliar spray of WSF and Banana pseudostem sap at 45 and 60 DAT gave significantly higher N and P content in bulb and leaves and S content in bulb and application of RDF + 1% foliar spray of WSF and multi-micronutrient formulation Grade IV at 45 and 60 DAT gave significantly higher K and Cu content in bulb and leaves, respectively and Fe content in bulb. While, significantly higher Mn and Zn content in bulb and leaves, S and Fe content in leaves were observed with application of 75% RDF + 1% foliar spray of WSF and Grade IV at 45 and 60 DAT.