Control of Vine Mealybug in Wine Grapes, 2015

This study was designed to evaluate the efficacy of reduced-risk insecticides for VMB control. Two trials were conducted in a commercial ‘Pinot Grigio’ vineyard located near Escalon, San Joaquin County, CA and one trial was conducted in a commercial ‘Cabernet Sauvignon’ vineyard located near Lodi, San Joaquin County, CA. In Escalon, the vineyard was planted in 1990 on a 1.83 m by 3.05 m. spacing. The replicates were three vines long and the two outside vines were considered treated buffer and not sampled. Nine treatments were replicated four times in trial 1 and six treatments were replicated six times in trial 2, both in an RCB design. All experimental treatments except Admire Pro were applied with a hand-held sprayer with a finished …