Date of this Version
Explanation of growing degree days (GDD) necessary for crop maturity and tables showing estimated maturity dates and freeze risks for different GDD accumulations for different planting times in regions of Nebraska.
The concept of growing degree days (GDD) resulted from observations that:
There is a base temperature below which plants do not grow.
The rate of growth increases with temperature above this base.
Crop hybrids require different GDD accumulations to reach maturity.