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Filtering by: Creator Rutschman, Scott A. Remove constraint Creator: Rutschman, Scott A. Degree Field Entomology Remove constraint Degree Field: Entomology

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  • Impact of insects on seed production in a Douglas-fir seed orchard in Oregon

    Creator:
    Dombrosky, Scott A.
    Abstract:
    The impact of various factors on seed production in a Douglas-fir (Pseudotsuga menziesii) seed orchard in western Oregon was examined by monitoring the fate of seeds in thirty cones, stratified into three crown levels, on each of ten trees during the 1984 growing season. Cones were examined monthly between April...
    Resource Type:
    Masters Thesis
    Full Text:
    orchard in Oregon AN ABSTRACT OF THE THESIS OF Scott A. Doabrosky for the degree of Master of Science