Evaluation of bio-efficacy of new fungicide molecule - UPF 509 (Azoxystrobin 8.3 w/w +Mancozeb64.75 w/w) and biocontrol agents against powdery mildew of grapes
A field experiment was conducted to evaluate the efficacy of UPF 509 (Azoxystrobin 8.3 w/w +Mancozeb64.75 w/w) against powdery mildew of grapes for 2 seasons at Theenampalayam village of Coimbatore district. It was found that Azoxystrobin 8.3 w/w +Mancozeb 64.75 w/w @ 0.36 % is highly effective in reducing the powdery mildew disease in grapes. Further the phytotoxicity was not observed in the chemical Azoxystrobin 8.3 w/w +Mancozeb64.75 w/w to the treated plots of grapevine even at high doses and also exhibiting an appreciable increase in Grape berry yield.
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