Crop (corn) heat units
Crop Heat Units (CHU) are calculated on a daily basis, using the maximum and minimum temperatures in order to account for a crop’s negative response to higher temperatures.
The formula used to calculate the CHU value for a day is:
(1.8 × (Minimum Temperature − 4.4) + 3.33 × (Maximum Temperature − 10) − 0.084 × (Maximum Temperature − 10)²) ÷ 2.0
CHU values are only accumulated during the Growing Season, April 1 through October 31.
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Date Created
2017-05-08
Date Published
2017-05-08
Temporal Coverage
2012-09-03 - Present
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Source(s) and Citation
Government of Canada; Agriculture and Agri-Food Canada; Science and Technology Branch. (2017-05-08). Crop (corn) heat units. https://agriculture.canada.ca
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agclimate, ch, temperature, farmlands, agriculture, crops, precipitation
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