First irrigation 10 days after planting, then once a week. Basal: FYM 15 t/ha with Azospirillum and phosphobacteria 2 kg/ha each. NPK 120:240:120 kg/ha in two splits — half at planting, the rest 30 days later. Also basal: magnesium sulphate 60 kg/ha, sulphur 75 kg/ha and zinc sulphate 25 kg/ha.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Potato – Irrigation; application of fertilizers, p. 134