Question: asking about the fungal wilt of bottle gourd 

Answer:  spray saaf fungicide @ 2 gm / l of water , 3 spray at 5 days interval and also loosen the surrounding soil.
insecticide= dursban 30 ec @ 2ml / l of water , 3 spray at 5 days interval , furadon 2gm / l of water  and apply as same.