Degree-day Models for Select Insect Pests in the Midwest Region

Degree-day models are a useful tool for understanding and forecasting the phenology (timing) of key events in the life cycle of insect and plant species. 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:

Alfalfa Weevil

Brown Marmorated Stink Bug

Cabbage Maggot

European Corn Borer (Bivoltine)
European Corn Borer (Univoltine)

Japanese Beetle

Seed Corn Maggot

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