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Extension > Minnesota Crop News > August 2001

Tuesday, August 7, 2001

When is a Growing Degree Day Not a Growing Degree Day?

D.R. Hicks, Professor of Agronomy and Plant Genetics

Heat accumulation during the growing season can be used as a predictor of plant development. The very high temperatures we've had, especially the high night temperatures, have caused the Growing Degree Day accumulation to be slightly ahead of normal for most of the state. But corn development is still lagging so there is the question of how effective this temperature accumulation really is for corn development.
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