Since its introduction and spread in the US from 2008-2012, spotted-wing drosophila (SWD), Drosophila suzukii (Matsumura), SWD has pr...
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Virginia Cooperative Extension programs and employment are open to all, regardless of age, color, disability, gender, gender identity, gender expression, national origin, political affiliation, race, religion, sexual orientation, genetic information, veteran status, or any other basis protected by law. An equal opportunity/affirmative action employer. Issued in furtherance of Cooperative Extension work, Virginia Polytechnic Institute and State University, Virginia State University, and the U.S. Department of Agriculture cooperating. Edwin J. Jones, Director, Virginia Cooperative Extension, Virginia Tech, Blacksburg; M. Ray McKinnie, Administrator, 1890 Extension Program, Virginia State University, Petersburg.
My white grapes are being "attacked" by wasps now that the sugar level has reached 10-18 Brix. They puncture the berries and cause sour rot. Some varieties are more susceptible than others and losses are accumulating. What control measures are available?
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