Question: query regarding field preparation of bottle gourd.  
Answer: please treat the seed with fungicide namely carboxin, maneb or trichoderma viridi 2.5 gram per kg of seed. maintain 2 miter row to row distance and 1.5 miter plant to plant distance. use fertilizer namely urea 16 kg per bigha, 46 kg phosphorus and 24 kg potash per bigha of land. and put 2-3 seed per pit and after attaining 3-4 leaf stage of the seedling, keep only one seedling per pit.