I need to confirm if it is downy mildew??

Hi Hassan Rahal welcome to the plantix community the eymptom is called Downy Mildew of Grape to control the disease use coppor oxychloride 3.5 gm per 1 ltr water or use metiram+pyraclostrobin 3 gm per 1 ltr water or use mandipropamid 2 ml per 1 ltr water but you have to do double spray of one in this apart of 3 to 5 days because your problem is severe attack thanks for visiting plantix