Growing Degree Days Development of crops in Illinois can be tracked and projected by maintaining an account of the "heat" accumulated during each growing season. This process involves a comparison of daily maximum and minimum temperatures to a base temperature, specific for a particular crop, above which development will occur.
Pest Degree Days Development of agricultural pests can be tracked and projected by maintaining an account of the "heat" accumulated during each growing season. This process involves a comparison of daily maximum and minimum temperatures to a base temperature, specific for a particular pest, above which development will occur.