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Filtering by: Subject Dahurian larch -- Diseases and pests -- Control Remove constraint Subject: Dahurian larch -- Diseases and pests -- Control Academic Affiliation Forest Science Remove constraint Academic Affiliation: Forest Science Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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  • Toxicity of methyl bromide to fungi inhabiting Dahurian larch wood

    Creator:
    Rhatigan, Ronald G.
    Abstract:
    Concerns over the possibility of exotic pest introductions from eastern Russia to the West Coast of the United States due to proposed log imports raises the question of the effectiveness of possible mitigation measures. Toxicity of methyl bromide to representative pathogenic fungi was tested by exposing Armillaria ostoyae, Heterobasidion annosum,...
    Resource Type:
    Masters Thesis

  • Western larch resistance to Douglas-fir beetle attack

    Creator:
    Neal, Tiffany A.
    Abstract:
    Live western larch, Larix occidentalis Nutt., a tree species resistant to the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, produces the monoterpene 3-carene in higher concentrations compared to Douglas-fir, the preferred host of D. pseudotsugae (Reed et al. 1986). The inhibitory effects on attraction to aggregation pheromones and toxicity of 3-carene to...
    Resource Type:
    Masters Thesis
    Full Text:
    aggregation pheromones were used to stimulate ~ttack on mature, live western larch and Douglas-fir, as well

  • Predators of hemlock woolly adelgid in northwestern Oregon

    Creator:
    Byrkit, Maggie K.
    Abstract:
    Hemlock woolly adelgid, Adelges tsugae Annand, is a serious threat to eastern hemlock, Tsuga canadensis Carriere, in the eastern United States. Infestations of A. tsugae are spreading rapidly and tree mortality caused by the insect is increasing yearly. As part of an integrated management approach, a classical biological control program...
    Resource Type:
    Masters Thesis
    Full Text:
    . Importation and release of exotic enemies has been repeatedly used as a means of biological control of pest