Search Constraints

Start Over
Filtering by: Subject Lodgepole pine -- Diseases and pests -- Montana Remove constraint Subject: Lodgepole pine -- Diseases and pests -- Montana Degree Field Botany Remove constraint Degree Field: Botany Degree Level Doctoral Remove constraint Degree Level: Doctoral

Search Results

  • 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

  • Infection of stressed ponderosa pines by Armillariella mellea from indigenous and artificial inoculum sources

    Creator:
    Fuller, Lloyd Randolph
    Abstract:
    Armillariella mellea (Vahl. ex Fr. ) Karst. was grown aseptically in hazel stems (Corylus cornuta var. californica) which were used in the forest to infect 290 ponderosa pines (Pinus ponderosa Laws.) which had been "stressed" in five different manners plus two control groups. All trees were inoculated twice giving a...
    Resource Type:
    Dissertation
    Full Text:
    II. Ponderosa Pine 41 1,912 10.7 2,160 225 20 30 III Ponderosa Pine and Lodgepole 12 477 228 10 5