Spotted Wing Drosophila (SWD) Flights Remain HIGH

July 25, 2019

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

As noted previously, our earliest SWD trap catch dates this year occurred with single adult flies caught in forest edge locations adjacent to crops; the earliest catch was May 23rd at Hastings. Since July 8th and during the past week, SWD numbers for traps located in berry crops (mostly blueberry, summer raspberry) increased substantially. One exception to this is the Hastings site, where only wine grapes are grown; berries are still very small and green (not attractive to SWD, but the fly is present). View the entire article here

swd trap