Grape Berry Moth Control, 19S8

Materials were applied to 8-yr-old ‘Concord’ grapevines at the research station. Seven treatments were replicated 4 times in a completely randomized block design. Each replicate consisted of a single 40-ft row of 12 vines. Treatments were applied with a 32 TGM Meyer airblast sprayer traveling at 2.5 mph and delivering 50 gal/acre. Applications were made on the following dates: 27 Jun (petal fall), 8 Jul, 21 Jul, 2 Aug, 16 Aug, 30 Aug, and 12 Sep. For evaluation, 25 bunches/replicate were picked and evaluated in the field for the presence of GBM damage or webbing.