Defence Enzyme Activation and Enchancement of Quality Parameters by Azoxystrobin 8.3 % w/w + Mancozeb 64.7 5 w/w and Biocontrol Agent in Grapevine against P.viticola

Defence enzymes such as Phenol, peroxidase, Polyphenol oxidase and Phenyl alanine ammonia Lyase in grapevine (Vitis vitefera) in response to Azoxystrobin 25+Mancozeb 63% and biocontrol treated plants from 0 day to 15 days after treatment. The chemical fungicides induce more enzymes when compared to biocontrol agent treated plants. Two isoforms of peroxidase and three isoforms of Polyphenol oxidase were induced in grape plants upon treatment with Azoxystrobin 8.3 % w/w + Mancozeb 64.7 5 when compared to Azoxystrobin and Mancozeb when applied alone. The quality parameters such as reducing, non reducing and acidity has been increased when Azoxystrobin 25+Mancozeb 63% @0.36 percent applied plants from 1 day to 7 days.