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    Author(s): C.J. Fettig; A.S. Munson; S.R. McKelvey; DeGomez T.E.
    Date: 2009
    Source: Tucson, AZ: University of Arizona, College of Agriculture and Life Sciences Bulletin, AZ1493. 4 p
    Publication Series: Miscellaneous Publication
    Station: Pacific Southwest Research Station
    PDF: View PDF  (538.28 KB)

    Description

    Bark beetles are commonly recognized as important tree mortality agents in western coniferous forests, but relatively few species (<25) are capable of killing apparently-healthy trees. However, during the last decade extensive levels of tree mortality were attributed to bark beetle outbreaks in spruce forests of south-central Alaska and the Rocky Mountains, lodgepole pine forests of western Canada and the Rocky Mountains, pinyon-juniper woodlands of the southwestern U.S., and ponderosa pine forests throughout much of their range. Large scale outbreaks occur when favorable climatic (e.g., droughts) and stand (e.g., dense stands of suitable hosts) conditions coincide.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Fettig, C.J., A.S. Munson, S.R. McKelvey, and T.E. DeGomez. 2009. Deposition from ground-based sprays of carbaryl to protect individual trees from bark beetle attack in the western United States. Tucson, AZ: University of Arizona, College of Agriculture and Life Sciences Bulletin, AZ1493. 4 p.

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