Abstract: Studies were carried out by the grapevine berries sprayed with copper hydroxide (Kocide 3000) to assess its quality in terms of reducing sugars, non reducing sugars, total sugars and acidity. The total, reducing and non reducing sugars were higher in the grapevine berries sprayed with Copper hydroxide comparing with that of control plots. Fruit quality was improved in Copper hydroxide (Kocide 3000) treated plots when compared to control. The plots receiving 450 g a.i ha-1 recorded 25.43 per cent increase in total sugar over control. It attributes that copper hydroxide apart from managing downy mildew pathogen, it improves quality of grapevine berries fetching higher market rate.