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In vitro decay of lodgepole pine blocks by several slash-inhabiting hymenomycetes

Creator:: Loman, August Adriaan
Resource Type:: Masters Thesis
Full Text:: and 22.0 degrees C. in subcortical areas of the lower portions of pieces of lodgepole pine slash at

Influence of dwarf mistletoe (Arceuthobium americanum) on stand structure, canopy fuels, and fire behavior in lodgepole pine (Pinus contorta) forests 21-28 years post-mountain pine beetle (Dendroctonus ponderosae) epidemic in central Oregon

Creator:: Agne, Michelle C.
Abstract:: Lodgepole pine (Pinus contorta) forests are widely distributed throughout western North America. However, the lodgepole pine forests of central Oregon are ecologically unique to the region, with a mixed severity fire regime, low cone serotiny, and their occasional presence as a climax species. Most of the research conducted regarding the...
Resource Type:: Masters Thesis
Full Text:: ) on Stand Structure, Canopy Fuels, and Fire Behavior in Lodgepole Pine (Pinus contorta) Forests 21-28

Effects of defoliation by the pine butterfly (Neophasia menapia Felder) upon ponderosa pine

Creator:: Evenden, James Cawston
Resource Type:: Masters Thesis

Stress response as a basis for disease susceptibility in Ponderosa Pine

Creator:: Koonce, Andrea
Abstract:: Trees stressed by artificial and natural means were sampled for response in growth and vigor, carbohydrate content, resin pressure characteristics, and water relations. Tree response was found to reflect both the severity and type of stress imposed. Crown color and appearance were reliable indicators of prolonged stress and advanced decline...
Resource Type:: Masters Thesis
Full Text:: , and advanced disease were sampled for oleoresin exudation pressure. They averaged 6, 4, and 2

Thelytokous and dioecious populations of Phenacaspis pinifoliae (Fitch), (Homoptera : Diaspididae)

Creator:: Stimmann, Michael W.
Abstract:: Two populations of the pine needle scale, Phenacaspis pinifoliae (Fitch), were studied. One population was located in Corvallis, Oregon, and the other population was located near Santiam Pass, Oregon. Both populations were feeding on Pinus contorta. The Corvallis population was unisexual, univoltine, and over wintered as both eggs and adult...
Resource Type:: Masters Thesis
Full Text:: Phenacaspis pinifoliae on "Scotch pine" in Saskatchewan, Canada. The population was bisexual and univoltine

Factors influencing the production and survival of inoculum of Elytroderma deformans

Creator:: Laird, Peter Paul
Abstract:: This study concerns factors affecting production and survival of ascospores of Elytroderma deformans (Weir) Darker, a needle cast of ponderosa pine (Pinus ponderosa Laws.). The results show that summer cooling and a reduction in host vigor delays and diminishes the number of fertile hysterothecia produced. Evidence is offered for classification...
Resource Type:: Masters Thesis
Full Text:: localized areas in the ponderosa pine forests of Oregon, Washington, Idaho, Montana and California. The

Distribution and variation of Armillariella mellea clones in relation to vegetative cover and severity of root rot in Ponderosa pine

Creator:: Cooley, Sally Joan
Abstract:: Root rot due to Armillariella mellea (Vahl. ex Fr.) Karst. is unusually severe in ponderosa pine near Glenwood, Washington. Isolate relations, clonal variability, vegetation patterns, and climate were examined in relation to severity of disease in this area. Ninety-one isolates from 70 infection centers were examined. Pairings of neighboring isolates...
Resource Type:: Masters Thesis
Full Text:: in relation to vegetative cover and severity of root rot in Ponderosa pine AN ABSTRACT OF THE

Parasites and predators of Dendroctonus ponderosae Hopkins (Coleoptera : Scolytidae) in ponderosa pine

Creator:: Billings, Ronald F.
Abstract:: The bark beetle Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae) has caused severe mortality in recent decades to young stands of ponderosa pine in the western United States. Insect parasites and predators, believed to be of importance in the population dynamics of the beetle, were the subject of the thesis research, conducted...
Resource Type:: Masters Thesis

Dissemination of spores of Elytroderma deformans (Weir) Darker

Creator:: Sikorowski, Peter Paul
Resource Type:: Masters Thesis

Detection of dwarf mistletoe in young-growth ponderosa pine from color aerial photography

Creator:: Hann, David W.
Abstract:: The purpose of this study was to determine if infection levels of dwarf mistletoe on ponderosa pine could be detected with color aerial photography. The photography was taken in early September using Kodak Ektachrome Infrared Aero and Ektachrome Aero films at scales of 1/4000, 1/2000, and 1/1000. Ground truth consisted...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

In vitro decay of lodgepole pine blocks by several slash-inhabiting hymenomycetes

Influence of dwarf mistletoe (Arceuthobium americanum) on stand structure, canopy fuels, and fire behavior in lodgepole pine (Pinus contorta) forests 21-28 years post-mountain pine beetle (Dendroctonus ponderosae) epidemic in central Oregon

Effects of defoliation by the pine butterfly (Neophasia menapia Felder) upon ponderosa pine

Stress response as a basis for disease susceptibility in Ponderosa Pine

Thelytokous and dioecious populations of Phenacaspis pinifoliae (Fitch), (Homoptera : Diaspididae)

Factors influencing the production and survival of inoculum of Elytroderma deformans

Distribution and variation of Armillariella mellea clones in relation to vegetative cover and severity of root rot in Ponderosa pine

Parasites and predators of Dendroctonus ponderosae Hopkins (Coleoptera : Scolytidae) in ponderosa pine

Dissemination of spores of Elytroderma deformans (Weir) Darker

Detection of dwarf mistletoe in young-growth ponderosa pine from color aerial photography

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