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Filtering by: Subject Lodgepole pine -- Diseases and pests -- Montana Remove constraint Subject: Lodgepole pine -- Diseases and pests -- Montana Academic Affiliation Botany Remove constraint Academic Affiliation: Botany Degree Field Botany Remove constraint Degree Field: Botany

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  • Epidemiology of Lophodermella morbida in plantations of ponderosa pine in western Oregon

    Creator:
    Harvey, George M.
    Abstract:
    In 1967, Lophodermella morbida Staley and Bynum, a recently described hypodermataceous needle-cast fungus, became destructively epidemic in a knobcone pine (Pinus attenuata Lemm.) plantation in Del Norte County, California, and in several ponderosa pine (P. ponderosa Laws.) plantations in western and southwestern Oregon. This thesis presents information on this currently...
    Resource Type:
    Dissertation
    Full Text:
    in Del Norte County, California, and in several ponderosa pine (P. ponderosa Laws. ) plantations in

  • Chemical applications for control of armillaria root rot of Ponderosa pine

    Creator:
    Filip, Gregory M.
    Abstract:
    Root rot caused by Armillariella mellea creates roughly circular disease centers of infected dead and dying trees in the younggrowth ponderosa pine forest under study. Research objectives concerning chemical control of the disease were: 1) to test the effectiveness of certain chemicals in protecting living pines adjacent to disease centers...
    Resource Type:
    Dissertation
    Full Text:
    . mellea from infected pine stubs and snags of killed trees within the disease center. These field