Degree Day Update for Insects (6/7/12)
LEAFY SPURGE FLEA BEETLE: Using the sunflower GDD model from NDAWN, the DD accumulation indicates that scouting for adult flea beetles should begin in the southeast region (1,000 DD). Flea beetles should be collected between 1,200 and 1,600 AGDD. We have not accumulated enough GDD yet in North Dakota for collecting adult leafy spurge flea beetles.
Janet J. Knodel