Seasonal variation of degree-day accumulation in relation to phenology of western spruce budworm, Douglas-fir tussock moth, and host trees in northeastern Oregon
By: Boyd E. Wickman.
Contributors: Pacific Northwest Research Station (Portland, Or.)
Series: Research note PNW-RN -- 482.; Research note PNW -- 482.
Publisher: U.S. Dept. of Agriculture, Pacific Northwest Research Station
Published: 1988
Place of publication: Portland, Or
Language: eng
Number of pages: 11
Subjects: Phenology -- Oregon.; Western spruce budworm -- Oregon.; Douglas-fir tussock moth -- Oregon.; Douglas fir -- Diseases and pests -- Oregon.; Abies grandis -- Diseases and pests -- Oregon.
Notes: Caption title.

"November 1988."

Bibliography: p. 10-11.