Question: qiuery regarding management of downey mildrew in pumpkin. 
Answer: --pluck the excessively affected leaves from the plants and burn them in a separate place out from the field.

 spray copper oxychloride (blitox-50/ blue copper) 3 gram per liter of water 3 times at 5 days interval in the evening time in the absence of rain. 

after that spray vitamins like -biovita/ mohaphol/ sagorika 2ml /liter of water @15 days interval in the evening time and to be continue up to the season end.