Question: query regarding cultivation practices for watermelon. 
Answer: seed rate- 400 gram/bigha of land, pit size 60 cm fill the pit up to 30 cm with dry cowdung. spacing- line to line- 2.5 meter and plant to plant 1.5 meter. chemical fertilizer- urea 25 gram super 40 gram and potash 20 gram per plant 10 cm away from the plant.