Weed and Insect Management
The grape root borer (GRB), Vitacea polistiformis (Harris), is the most damaging insect pest of grapes in Tennessee. Damage usually appears slowly; and because the pest attacks the plant below ground, symptoms are not always associated with a pest infestation. Chemical control is difficult. Here we provide information to help you identify a GRB problem and protect your grapes against damage.
"W171-The Grape Root Borer in Tennessee," The University of Tennessee Agricultural Extension Service, W171-11/07 08-0051, http://trace.tennessee.edu/utk_agexcomhort/26