Home > Term: cumulative degree day sum
cumulative degree day sum
A physiological unit of time calculated as the number of degrees above a threshold temperature x the number of days accumulated. Similar to day degree or degree day.
- ส่วนหนึ่งของคำพูด: noun
- อุตสาหกรรม/ขอบเขต: Agriculture
- Category: Rice science
- Company: IRRI
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- D.Herbert
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