A Degree Day Model for Predicting the Emergence of Swamp Dodder in Cranberry
Open Access
- 1 November 1988
- journal article
- Published by American Society for Horticultural Science in Journal of the American Society for Horticultural Science
- Vol. 113 (6) , 839-841
- https://doi.org/10.21273/jashs.113.6.839
Abstract
A simple model that predicts the onset of swamp dodder (Cuscuta gronovii Willd. ex R. & S. # CVCGR) emergence was developed. The use of growing degree days (GDD) with low-temperature thresholds (LTT) of 3.3° or 0°C had a better fit as a predictor for the beginning of emergence than either air temperature or soil temperature at a depth of 30 mm alone. This model can be used to time preemergence herbicide applications to coincide with the period of maximum dodder sensitivity, thereby increasing herbicide efficacy.Keywords
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