UW Extension Ag Weather

Hot and Cold

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.

Degree-day plot

Generic Degree Day Calculator

This calculator allows you to input your location, method of calculation (e.g. Modified Sine B), and the appropriate biofix dates.

We also calculate a simple daily text report for 24 locations in and around Wisconsin

Alfalfa Weevil Larvae

Alfalfa Weevil Thermal Models

Degree-day map and information on weevil development.

 

Corn

Corn-Specific Thermal Models

Corn development model and specific degree-day models for corn pests.

 

Seedcorn Maggot

Seedcorn Maggot

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

 

potato

Potato Development

Potato P-Day map.

 

tree

Tree Pests

We use a Base 50F degree-day model to predict the development of many tree pests.

In addition, we also provide results from the GMPHEN gypsy-moth phenology model.