Damage to Douglas-Fir Cones by Choristoneura occidentalis1
- 15 December 1970
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 63 (6) , 1804-1806
- https://doi.org/10.1093/jee/63.6.1804
Abstract
The budworm Choristoneura occidentalis Freeman was found to be a serious pest to Douglas-fir cones in Montana and Yellowstone National Park, Wyoming. A total of 41,250 cones was examined or placed in rearing containers during the summers of 1967 and 1968. Of the cones collected in 1967, 36% were infested with budworm larvae. One budworm often feeds on more than one cone during its development. Most of the seed in budworm-infested cones is destroyed.Keywords
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