questions: query related to flower rot and drop in pumpkin 
 answers: please apply planofix once in a week for one month, mix 1 ml planofix in 4.5 litre water and spray on leaves and flowers.
 apply borax once in a week for one month, mix 6 gram borax in one litre water and spray on flowers.
also apply saaf, mix 2 gram saaf in one litre water and spray on leaves and flowers , spray 3 times at 5 days gap.