Growing-degree Day
Growing degree days (GDD), also called growing degree units (GDUs), are a heuristic tool in phenology. GDD are a measure of heat accumulation used by horticulturists, gardeners, and farmers to predict plant and pest development rates such as the date that a flower will bloom or a crop reach maturity.
Read more about Growing-degree Day: Introduction, GDD Calculation, Plant Development, Pest Control, Honeybees, Baselines
Famous quotes containing the word day:
“O Paddy dear, an’ did ye hear the news that’s goin’ round?
The shamrock is by law forbid to grow on Irish ground!
No more Saint Patrick’s Day we’ll keep, his colour can’t be seen,
For there’s a cruel law agin the wearin’ o’ the Green!”
—Unknown. The Wearing of the Green (l. 37–40)