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The spotted-wing drosophila (SWD) originates from Asia where it has been a pest of soft fruit crops. In 2008 it was introduced into California, and we trapped it Virginia in 2010. This pest has a high reproductive rate and high number of generations, so populations can build quickly, with a high risk of insecticide resistance. Total crop losses have been seen resulting from infestation by SWD. Berry growers must be prepared to deal with SWD.
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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.
July 14, 2020