Varieties: 10 kg FYM and 100 g of 6:12:12 NPK mixture per pit as basal, and 10 g N per pit at 30 days after sowing. Hybrids: NPK 200:100:100 kg/ha — half the N and K with all the P as basal, and the other half of N and K at 30 days. The source also lists Ethrel 250 ppm at the 2-leaf and 5-leaf stages to increase female flowers.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Ash gourd – Application of fertilizers; foliar application, p. 95
