Degree-day Models and Forecasts for Selected Insect Pest Species in the Midwest Region

Anthony Hanson Extension Educator - IPM Field Crops

Bill Hutchison - Extension Entomologist, Dept. of Entomology, St. Paul campus

Degree-day models are a useful tool for understanding and forecasting the phenology (timing) of key events in the life cycle of arthropod (insect, mite) and plant species. As part of the Minnesota Extension IPM Program, we provide state and region-wide DD updates during the growing season, for selected insect pest species. Beginning in 2018, the following species are being modeled:

European Corn Borer (Multivoltine)

European Corn Borer (Univoltine)

Seed Corn Maggot

Cabbage Maggot

ECB moths

ECB larva


cabbage maggot

Brown marmorated stink bug

Japanese beetle

 BMSB adult (David R. Lance, USDA APHIS PPQ,