Irrigate at planting, on the third day, and then at weekly intervals. Basal: FYM 25 t/ha, Azospirillum 2 kg and phosphobacteria 2 kg/ha, N 50 kg, P 150 kg and K 75 kg/ha, and zinc sulphate 50 kg/ha at the last ploughing. Top-dress 50 kg N/ha 30 days after planting.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Big onion – Irrigation; application of fertilizers, p. 151
