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Creator:: Halber, Max
Resource Type:: Masters Thesis
Full Text:: (Lindi.) Decne. and Parker and Long (14 p. 4) found severe damage in Z-0 Douglas-fir nursery stock from

Creator:: Aho, Paul E.
Abstract:: Infection courts for microorganisms invading white fir heartwood were determined to be primarily branches and basal wounds. Of 11 hymenomycetes isolated from infected trees, only four: Echinodontiurn tinctorium, Phellinus chrysoloma, Pholiota adiposa, and Hericium abietis were of major significance in terms of frequency of infection and damage caused. Two or...
Resource Type:: Dissertation
Full Text:: (Libocedrus decurrens Torr.) and Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) at

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:: transition occurs between Douglas-fir (Pseudotsuga menziesii [Mirb. ] Franco) to the west and ponderosa pine

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:: , 1962; Leaphart, 1963; Baranyay and Stevenson, 1964; Redfern, 1968; Singh, 1970; Parker and Houston

Creator:: Beckman, Kent Mardsen
Abstract:: Longevity and germination of seed of western dwarfmistletoe (Arceuthobium campylopodum Engelm. f. campylopodum) of ponderosa pine (Pinus ponderosa Laws.) was investigated to determine: 1) the influence of humidity and temperature on seed viability and deterioration during storage; 2) the physiology of seed dormancy; 3) the composition of seed reserve food...
Resource Type:: Dissertation
Full Text:: Engelm. on Douglas fir' 4) 4. vaginatum (Willd. ) PresI on three- needle pines, and 5) A. campylopodurn

Creator:: Strand, Mary Ann Sall, 1945-
Abstract:: Western dwarf mistletoe (Arceuthobium campylopodum Engelm. 1. campylopodum) is a parasite of ponderosa pine (Pinus ponderosa Laws. ). The objectives of this investigation are: (a) to formulate a mathematical description of the process of dwarf mistletoe disease spread in a pine forest, (b) to use this description to predict the...
Resource Type:: Dissertation
Full Text:: . on lodgepole and jack pine, A. douglasii Engelm. on inland Douglas-fir, A. vaginatum (Willd

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:: sometimes abundant in the Douglas-fir (Pseudotsuga menziesii (Mirb. ) Franco) forest. Port-Orford-cedar

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