Growing Degree Days Calculator

The use of growing degree days is becoming more widely accepted across the U.S. to compare hybrids and predict the rate of development of the corn plant.  In this calculation, extremes of 86° and 50° are used because plant growth rates do not exceed these extremes.

Calculations based on the Illinois Agronomy Handbook - University of Illinois College of Agricultural, Consumer and Environmental Sciences at Champaign-Urbana