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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:: AN ABSTRACT OF THE THESIS OF Gregory M. Filip for the degree

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:: : Lewis F. Roth In 1967, Lophodermella morbida Staley and Bynum, a recently- described hypodermataceous

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:: . Lewis F. Roth Root rot due to Armillariella mellea (Vahl. ex Fr.) Karst. is unusually severe in

Growth and sporulation of Phytophthora lateralis in vitro as influenced by the chemical and physical environment

Creator:: Englander, Larry
Abstract:: Phytophthora lateralis Tucker and Milbrath, causal agent of a serious fungus root rot of Chamaecyparis lawsoniana, has seriously damaged natural stands in southwestern Oregon forests and affected ornamentals throughout the Pacific Northwest. Progress with an effective control program in the field has been limited by lack of critical knowledge of...
Resource Type:: Dissertation
Full Text:: INFLUENCED BY THE CHEMICAL AND PHYSICAL ENVIRONMENT Abstract approved: Redacted for Privacy Lewis F. Roth

Epidemiological insights into Armillaria mellea root rot in a managed Ponderosa pine forest

Creator:: Shaw, Charles G. (Charles Gardner) 1948-
Abstract:: Root rot of ponderosa pine caused by Armillaria mellea was studied in a pine forest that had been under management for 30 years in Klickitat County, Washington. Information sources included disease survey, detailed observation and description of specific disease situations, and examination of roots in situ and removed. Roughly circular...
Resource Type:: Dissertation
Full Text:: MANAGED PONDEROSA PINE FOREST Abstract approved: Redacted for Privacy Lewis F. Roth Root rot of

Survival and pathogenicity of Phytophthora cinnamomi Rands in forest soils

Creator:: Kuhlman, Elmer George, 1934-
Resource Type:: Dissertation
Full Text:: Dr. L. F, Roth for his conse1 and encouragement during the course of this ±nve8tigation. The

The relation of cover to the distribution of Armillaria mellea in a Ponderosa pine forest

Creator:: Adams, David Howard
Abstract:: Numerous isolates of Armillaria mellea were obtained within a 250 by 450 foot Study Area in a ponderosa pine plantation in central Oregon. These isolates were recovered from roots of armillaria-killed young-growth pine, from large stumps of the former pine overstory, including roots away from the stump proper, and from...
Resource Type:: Dissertation
Full Text:: Abstract approved: Redacted for Privacy Lewis F. Roth Numerous isolates of Armillaria mellea were

Factors affecting the germination of seeds of the dwarf mistletoe Arceuthobium campylopodum f. typicum. (Engelm.) Gill

Creator:: Sayre, Richard Martin
Resource Type:: Masters Thesis
Full Text:: . Acknowledgment is also due Dr. S. M. Dietz and Dr. Roy Young for helpful criticism of the manuscript. ispeoial

Physiological relationships between dwarf mistletoe and ponderosa pine

Creator:: McDowell, Larry Leon
Abstract:: A comparative study was made of Pinus ponderosa Laws, and Arceuthobium campylopodum Engelm. f . campylopodum to determine (1) whether or not the parasite or parasitized tissues accumulate abnormal concentrations of minerals, (2) whether or not there was evidence of a blockage of mineral translocation in the phloem because of...
Resource Type:: Dissertation
Full Text:: ACKNOWLEDGMENT The author wishes to express his sincere appreciation to Dr. Lewis F. Roth for his encouragement

Botrytis infection of Douglas-fir seedlings and its control with thiram

Creator:: Halber, Max
Resource Type:: Masters Thesis
Full Text:: the preparation of this thesis: Drs. Lewis F. Roth, K. C. Lu, Douglas W. Glennie, and Ernest

ScholarsArchive@OSU

Chemical applications for control of armillaria root rot of Ponderosa pine

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

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

Growth and sporulation of Phytophthora lateralis in vitro as influenced by the chemical and physical environment

Epidemiological insights into Armillaria mellea root rot in a managed Ponderosa pine forest

Survival and pathogenicity of Phytophthora cinnamomi Rands in forest soils

The relation of cover to the distribution of Armillaria mellea in a Ponderosa pine forest

Factors affecting the germination of seeds of the dwarf mistletoe Arceuthobium campylopodum f. typicum. (Engelm.) Gill

Physiological relationships between dwarf mistletoe and ponderosa pine

Botrytis infection of Douglas-fir seedlings and its control with thiram

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