Spotted-wing Drosophila (SWD) Concerns for Wine Grapes Continues

Bill Hutchison, Dept. of Entomology, University of Minnesota, St. Paul campus

SWD trap catches remain high in vineyards and fall raspberries, and growers should continue to be diligent in controlling SWD this time of year, particularly just before grape harvest. Recent trap catch data for SWD at Rosemount and Hastings is shown in the following graph. See the previous SWD article, published in late August, for more information .