Reduce SWD to Protect Against Sour Rot

Clint Thompson Grapes

By Clint Thompson The ripening of grapes around the Southeast means producers need to be managing drosophila flies. As grapes near veraison or 15 degrees brix, they become more attractive, especially for spotted wing drosophila (SWD). As Brett Blaauw, assistant professor at the University of Georgia (UGA) College of Agricultural and Environmental Sciences, points out in the UGA Extension Viticulture …