Hoe and weed three times. The source also lists Ethrel 250 ppm (2.5 ml per 10 litres of water) sprayed four times at weekly intervals starting 10–15 days after sowing.
Follow the instructions on the product label. Consult your local Agriculture Officer before use.
Pending expert review
Source
Crop Production Guide – Horticulture Crops 2020 (Directorate of Horticulture and Plantation Crops, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Pumpkin – After cultivation, p. 82
