Index Catalog // ScholarsArchive@OSU

Western larch resistance to Douglas-fir beetle attack

Creator:: Neal, Tiffany A.
Abstract:: Live western larch, Larix occidentalis Nutt., a tree species resistant to the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins, produces the monoterpene 3-carene in higher concentrations compared to Douglas-fir, the preferred host of D. pseudotsugae (Reed et al. 1986). The inhibitory effects on attraction to aggregation pheromones and toxicity of 3-carene to...
Resource Type:: Masters Thesis
Full Text:: aggregation pheromones were used to stimulate ~ttack on mature, live western larch and Douglas-fir, as well

Controlling damage by ring-necked pheasants to sprouting corn in southwestern Idaho

Creator:: Helmich, Bryan T.
Abstract:: During the springs of 1988 1989, experiments were conducted to determine effective methods of controlling damage by ring-necked pheasants (Phasianus coichicus) to sprouting corn in southwestern Idaho. Plot evaluations (1988) failed to demonstrate the ability of Miller Hot Sauce Animal Repellent, Isotox Seed Treater (F), provision of alternate food, and...
Resource Type:: Masters Thesis
Full Text:: m), Nampa/Caldwell, Idaho, 1989. LIST OF TABLES TABLE PAGE 1. Plot sizes and spacing by field

Field classification of white pine blister rust stem-cankers on resistant western white pine in northern Idaho and determination of respective tissue damage through tree ring analysis

Creator:: Eckert, Amy I.
Abstract:: Western white pine historically dominated northern Idaho’s forested landscape and was the Inland Empire’s most economically important tree. White pine blister rust, caused by the exotic fungus Cronartium ribicola, played a principal role in the decline of western white pine. The pathogen causes branch and bole cankers, which usually girdle...
Resource Type:: Masters Thesis
Full Text:: Classification of White Pine Blister Rust Stem-Cankers on Resistant Western White Pine in Northern Idaho and

Toxicity of methyl bromide to fungi inhabiting Dahurian larch wood

Creator:: Rhatigan, Ronald G.
Abstract:: Concerns over the possibility of exotic pest introductions from eastern Russia to the West Coast of the United States due to proposed log imports raises the question of the effectiveness of possible mitigation measures. Toxicity of methyl bromide to representative pathogenic fungi was tested by exposing Armillaria ostoyae, Heterobasidion annosum,...
Resource Type:: Masters Thesis

Population structure and incidence of Heterobasidion annosum in grand fir and Douglas-fir on the Nez Perce National Forest, Idaho

Creator:: Lockman, Irene Blakey
Abstract:: Annosus root disease (Heterobasidion annosum (Fr.) Bref.) is causing notable conifer mortality in grand fir habitat types in central Idaho. The most significant mortality is occurring in Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco.) trees of all age classes. This project was designed to study some aspects of the general biology of...
Resource Type:: Masters Thesis

Isolation and Pathogenicity of Naturally Occurring Entomopathogenic Fungi to Clover Root Borer (Coleoptera: Curculionidae: Scolytinae), a Pest of Red Clover Seed Crops

Creator:: Lestari, Anis S.
Abstract:: Entomopathogenic fungi are cosmopolitan microbial pathogens that cause fungous diseases in a wide range of insects via spore infection. Due to their natural enemy status, they have tremendous potential for use as microbial control agents against insect pests, especially subterranean pests for which few management options are available. The clover...
Resource Type:: Masters Thesis
Full Text:: borers and root zone soil samples from five red clover seed production fields in Western Oregon. Based

Pathogenicity of Phytophthora species from Oregon waterways

Creator:: Navarro, Sarah M.
Abstract:: Described as one of the most destructive pathogens of agricultural crops and forest trees, Phytophthora is a genus of microorganisms containing over 100 known species. Phytophthora alni has caused collar and root disease in alders throughout Europe and a form of the species has recently been isolated in North America....
Resource Type:: Masters Thesis
Full Text:: has caused collar and root disease in alders throughout Europe and a form of the species has

Resistance in snap beans, Phaseolus vulgaris L., to adult western spotted cucumber beetle, Diabrotica u. indecimpunctata Mann

Creator:: Eltoum, Elameen M. A.
Abstract:: Studies to evaluate resistance in snap beans, Phaseolus vulgaris L. to adult western spotted cucumber beetles, Diabrotica u. undecimpunctata Mann. were conducted in greenhouse cages, field cages, field plots, and in temperature controlled cabinet in the laboratory. Results showed that there were differences in susceptibility to adult feeding injury between...
Resource Type:: Masters Thesis
Full Text:: pests in California, and it is a common pest in the Willamette Valley of Western Oregon (Rockwood and

Modeling hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) spread and intensification in mature uneven-aged forests in southeast Alaska

Creator:: Trummer, Loreen M.
Abstract:: Hemlock dwarf mistletoe (Arceuthobium tsugense (Rosendahi) G.N. Jones subsp. tsugense (western hemlock race)) is the most important and widespread disease of old-growth western hemlock forests in the Pacific Northwest. Although heavy infection of dwarf mistletoe can significantly increase growth loss and mortality of host trees, the parasite is also considered...
Resource Type:: Masters Thesis

The effect of light intensity on Douglas-fir foliage quality : survival and development of Western spruce budworm

Creator:: Waddell, Karen L.
Abstract:: Foliage from Douglas-fir(var. glauca) seedlings grown under two light intensities was bioassayed to examine palatability to the western spruce budworm (Choristoneura occidentalis Free.). Samples were collected in Fall, Winter and early Spring to identify seasonal changes in host foliage, as evidenced by the response of spruce budworms. Fall collected foliage...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Western larch resistance to Douglas-fir beetle attack

Controlling damage by ring-necked pheasants to sprouting corn in southwestern Idaho

Field classification of white pine blister rust stem-cankers on resistant western white pine in northern Idaho and determination of respective tissue damage through tree ring analysis

Toxicity of methyl bromide to fungi inhabiting Dahurian larch wood

Population structure and incidence of Heterobasidion annosum in grand fir and Douglas-fir on the Nez Perce National Forest, Idaho

Isolation and Pathogenicity of Naturally Occurring Entomopathogenic Fungi to Clover Root Borer (Coleoptera: Curculionidae: Scolytinae), a Pest of Red Clover Seed Crops

Pathogenicity of Phytophthora species from Oregon waterways

Resistance in snap beans, Phaseolus vulgaris L., to adult western spotted cucumber beetle, Diabrotica u. indecimpunctata Mann

Modeling hemlock dwarf mistletoe (Arceuthobium tsugense subsp. tsugense) spread and intensification in mature uneven-aged forests in southeast Alaska

The effect of light intensity on Douglas-fir foliage quality : survival and development of Western spruce budworm

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search