GDU Calculator


Growing Degree Unit (GDU) Calculator

(1) Enter postal code for field location. (2) Move the green slider to set plant date. Results show total GDUs and Year-To-Year Comparisons change by date. (3) Move the brown sliders to set daily, weekly, monthly, or annual accumulations. (4) Click on any graph line for number estimates. (5) Click on any graph bar for daily details.

See Disclaimer

Pioneer Weather Information Disclaimer

This information is calculated using weather data provided by Corteva Agriscience. Corteva makes no representations or warranties as to the accuracy or completeness of this data.

Please select field location
View Map Selector
Enter a start date
CRM value must be between 70 and 135

Select Location From Map

Graph Layers

Black Layer
Custom GDU Layer

Total GDUs Since

To Date




Versus Normal


Forecast (+14 Days)


Accumulated GDUs
Degree Units
Individual GDUs
Degree Units

Year-to-Year Comparisons From to

Season Total GDUs GDUs from Normal
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