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    Author(s): Merle L. Richmond; Charles J. Henny; Randy L. Floyd; William R. Mannan; Deborah M. Finch; Lawrence R. DeWeese
    Date: 1979
    Source: Res. Paper PSW-RP-148, Berkeley, CA: U.S. Department Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 25 p
    Publication Series: Research Paper (RP)
    Station: Pacific Southwest Research Station
    PDF: View PDF  (2.6 MB)

    Description

    The possible harmful effect of insecticides on nontarget organisms should be a prominent concern in all attempts to control forest pests. Although all wildlife must be considered, birds are particularly vulnerable. The study reported here was part of the effort to find an environmentally safe method to control one of the major sources of insect damage to forest trees - the Douglas-fir tussock moth (Orgyia pseudotsugata [McDunnough]). Its larval stage is an important defoliator of true firs (Abies sp.) and Douglas-fir (Pseudotsuga menziesii var. glauca [Beissn.] Franco)in western North America. In Oregon, severe infestations have recurred at intervals of about 10 years since 1936 (Wickman and others 1973).

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    Citation

    Richmond, Merle L.; Henny, Charles J.; Floyd, Randy L.; Mannan, William R.; Finch, Deborah M.; DeWeese, Lawrence R. 1979. Effects of sevin-4-oil, dimilin, and orthene on forest birds in northeastern Oregon. Res. Paper PSW-RP-148, Berkeley, CA: U.S. Department Agriculture, Forest Service, Pacific Southwest Forest and Range Experiment Station. 25 p

    Keywords

    Sevin-4-Oil (carbaryl), Orthene (acephate), Dimilin (diflubenzuron), forest birds, brain cholinesterase

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