Indigenous Aureobasidium pullulans Strains as Biocontrol Agents of Botrytis cinerea on Grape Berries

Aureobasidium pullulans is a yeast-like fungus found on the surface of grape berries that has been proven to act as biocontrol agent for management grey mould disease caused by Botrytis cinerea. In this work, an indigenous strain A. isolated from and selected according in vitro activity against B. cinerea, was used vineyards winery where it originated, comparison with commercial product containing two strains aim assessing its effectiveness agent. The experimental design included daily meteorological data registration early defoliation grapevines treatments. monitoring plate counts molecular methods well cinerea symptoms bunches performed different trials end flowering harvest time. Results highlighted although no significant differences (p < 0.05) occurrence were detected treatments, mean incidence symptomatic ranged 7 16%, lowest values recorded treated strain. efficacy affected more conditions than practice.