Thermal Models

Growth and development for many plants and insects is keyed to temperature. By calculating the history of daily temperatures over a season, we can predict pest emergence, crop development, and other events of keen interest in agriculture.

Vegetable Disease & Insect Forecasting Network

Visual map-based interface to view disease risk models, insect developmental models, and degree-day accumulation in Wisconsin and surrounding states. This is the newest and most advanced tool we have available.


Degree Day and Disease Severity Maps

View maps of degree day accumulation based on your parameters.


Generic Degree Day Calculator

This calculator allows you to input your location, method of calculation (e.g. average/modified/sine), and the appropriate biofix dates.


Oak Wilt Vectors Emergence Thermal Model

Degree-day information on emergence of insects that transmit oak wilt and recommendations for when it is safe to prune/cut/harvest oak in Wisconsin.


Potato Pests and Diseases

Learn more and view links to resources about potato diseases and insect pests.


Alfalfa Weevil Thermal Models

Degree-day information on weevil development.


Corn Stalk Borer

Development of corn stalk borer can be estimated using a base 41 F degree-day calculation.


European Corn Borer

Development of European corn borer can be estimated using a Modified base 50 F degree-day calculation.


Spongy Moth

This page has some information on plant blooms and other natural phenological events that can help predict the development of spongy moth (previously known as gypsy moth).


Seedcorn Maggot

Degree day models for this pest of soybean, corn, and vegetable crops


Western Bean Cutworm

Development of European corn borer can be estimated using a Modified base 50 F degree-day calculation.


Corn Development

Instructions for tracking corn development using a degree day model.


Frost Map

The first map shows the median DOY of first frost; for each map location, half the years were earlier than this date, half later. The second and third map show the earliest DOY of frost in the dataset, and the latest, respectively.