Spotted Wing Drosophila (SWD) Flights Remain High in Berry Crops & Nearby Forest Edge Borders

August 9, 2019

Bill Hutchison, Eric Burkness, Anh Tran, Dominique Ebbenga & Suzanne Wold-Burkness
MN Extension IPM Program, Dept. of Entomology, University of Minnesota, St. Paul campus

Spotted-wing Drosophila (SWD) trap catches continue to remain very high in all on-farm and research locations monitored, especially the past 2 weeks. Traps in our network are effective at catching both male and female flies (Fig. 1).  See Table 1 below for details. Growers should remain diligent in alternating insecticide products as much as possible (e.g. Delegate or Entrust (organic-certified) and Mustang Maxx, and malathion if needed), and follow the pre-harvest intervals noted on the label for each product. View the entire article here.