Claim · model-written summary
The stated regression predicted heat days for budbreak from chill days across a broad geographic range.
- Taxon
- pecan
_1_(24790682337).jpg?width=60)
Carya illinoinensist0 - Outcome
- heating degree days required for budbreake0
- Value
- Log Y = 2.7190-0.0216 √Xe0
- Qualifier
- over a wide geographic rangee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_1_(24790682337).jpg?width=500)
Verbatim
e0“heating degree days required for budbreak of a composite of cultivars can be predicted from chilling degree days over a wide geographic range by the relationship, Log Y = 2.7190-0.0216 √X”
t0“Pecan”
Title
Chilling and Heating Model for Pecan Budbreak
Darrell Sparks Journal of the American Society for Horticultural Science 1993. doi:10.21273/jashs.118.1.29
Other claims from this paper (6)
- Association Pecan budbreak depended jointly on heating and chilling.
- Association Heat required for pecan budbreak decreased as chill accumulation increased.
- Observation Pecan budbreak could occur without chilling after sufficient heat accumulation.
- Association Pecan budbreak variability increased sharply below about 100 chilling degree days.
- Observation Heating degree days with daily minima below 2.2C were inefficient.
- Method / resource A 3.9C base was most efficient for heating and chilling.