Irrigate twice a week in the first month, then weekly depending on weather. Recommended dose: FYM 25 t/ha and NPK 125:120:25 kg/ha — half the N and all the P and K at planting, the other half of N 30 days after planting. Foliar spray: ZnSO4 0.25% + MgSO4 0.5%. Azospirillum and phosphobacteria 2 kg/ha each, mixed with 100 kg FYM, at planting.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Chrysanthemum – Nutrition; micronutrients; biofertilizers; irrigation, p. 256