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Notes: Shoot Growth Models for Douglas-fir and Grand Fir

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Abstract:

Models were developed for Douglas-fir (Pseudotsuga menziesii var. glauca (Beissn.) Franco) and grand fir (Abies grandis (Dougl. ex D. Don) Lindl.) to predict shoot growth from degree-days with the logistic growth function. Shoot growth differences were found between these two species. Shoot elongation and western spruce budworm (Choristoneura occidentalis Free.) development were correlated with degree-days above 5.5°C. Forest Sci. 30:743-746.

Keywords: Choristoneura occidentalis; Phenology; degree-days; modelling; western spruce budworm

Document Type: Miscellaneous

Affiliations: Research Assistant, College of Forestry, Wildlife and Range Sciences, University of Idaho, Moscow, ID 83843

Publication date: September 1, 1984

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