Question: query regarding fungal infection in bitter gourd.
Answer: bitter gourd: spray relaxyl @ 2 g/l of water 3 times at 5 days interval in evening time in absence of rain. 
insecticide: spray decis @ 2 ml/l of water 3 times at 5 days interval in evening time in absence of rain.
fungicide for chilli: take 2 g of captan or captaf per liter of water after that deep the seedlings fo half an hour.