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How does western spruce budworm feeding affect western larch?Author(s): David G. Fellin; Wyman C. Schmidt
Source: Gen. Tech. Rep INT-GTR-7. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 25 p.
Publication Series: General Technical Report (GTR)
Station: Intermountain Forest Experiment Station
PDF: View PDF (8.82 MB)
DescriptionThis pictorial describes how western spruce budworm larvae feed on young western larch and the trees' responses to this damage. Larvae feed not only on the current year's foliage-their usual diet on most coniferous hosts-but also sever stems of current year's shoots. Multiple-topped, bushlike trees develop in direct response to the amount and type of damage. As a result, trees cannot maintain straight boles and good form. Sustained budworm damage could conceivably influence the management of western larch-one of the more important conifers in the northern Rockies.
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CitationFellin, David G.; Schmidt, Wyman C. 1973. How does western spruce budworm feeding affect western larch? Gen. Tech. Rep INT-GTR-7. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 25 p.
KeywordsLepidoptera (-forest damage), shoot damage, western spruce budworm, Choristoneura occidentalis Freeman, western larch, Larix occidentalis Nutt.
- Recovery of snow-bent young western larch
- Stand density in relation to biological functions in young western larch forests
- Response of western larch to site preparation
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