Question: query regarding management of fruit rotting and droping of bitter gourd. 
Answer: --use stanes micro food 6gram/liter of water and apply near the root zone and also spray by covering the whole plant 2 times at 7 days interval. after that take 3 days of gap and ther spray vitamins like mohaphol/biovita/sagorika 2 ml/liter of water at 15 days interval in the evening time continously.