Index Catalog // ScholarsArchive@OSU

Within and between plant dispersal and distributions of adult females and immatures of Neoseiulus californicus and N. fallacis (Acari: Phytoseiidae) in bean and apple plant systems

Creator:: Pratt, Paul D. (Paul David), 1970-
Abstract:: Intra- and interplant movement and dispersal of the predator mites Neoseiulus californicus (McGregor) and Neoseiulus fallacis (Garman) were studied on both lima bean (Phaseolus lunatus L.) and apple (Malus pumila Miller) branch plant systems that were seeded with excess numbers of the spider mite Tetranychus urticae Koch. Individuals of either...
Resource Type:: Masters Thesis
Full Text:: than does N. fallacis. Spatial patterns of dispersal and biological control of pest mites are

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:: light, moisture, and nutrient deficiencies, disease, or old age. 2.3.3 Counter-Offensive Adaptation

Transposon-induced nutritional and virulence mutants in two pathovars of Pseudomonas syringae

Creator:: Anderson, Dirk M.
Resource Type:: Masters Thesis
Full Text:: brown spot disease of bush bean was helpful. The suggestions of Drs. Mary Powelson and Larry Moore

Transfer, characterization and mapping of white mold resistance in an advanced backcross interspecific population between Phaseolus vulgaris and Phaseolus coccineus

Creator:: Zimmerman, Shawna Jean
Abstract:: The advanced backcross-quatitative trait loci (AB-QTL) breeding method was employed on snap bean (OR 91G x PI433251B) and dry bean (M0162 x PI433251B) interspecific populations to transfer resistance QTL from resistant donor parent Phaseolus coccineus into P. vulgaris. For OR 91G x PI433251B, analyses produced nine linkage groups corresponding to...
Resource Type:: Masters Thesis
Full Text:: employed on snap bean (OR 91G x PI433251B) and dry bean (M0162 x PI433251B) interspecific populations to

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Creator:: Saeed, Mohammad
Abstract:: A parasitic wasp, Trioxys pallidus Haliday (Hymenoptera: Aphidiidae) was imported from Europe and initially released against the filbert aphid Mvzocallis coryli (Goetze) in hazelnut (filbert) orchards of the Willamette Valley, Oregon beginning in 1984. In the present study, I investigated the establishment rates of this parasitoid. A total of 13...
Resource Type:: Masters Thesis
Full Text:: useful in implementation of integrated pest control programs involving incorporation of chemical and

Toxicity of peppermint monoterpenes to the variegated cutworm, Peridroma saucia Hübner

Creator:: Harwood, Steven Hunter
Abstract:: The toxicity of menthol, menthone, pulegone, limonene, and a-pinene, five monoterpenes found in peppermint (Mentha piperita L.), to the variegated cutworm (Peridroma saucia Hiibner) was characterized by in vivo and in vitro methods. Pulegone and menthone caused slower growth over six days when incorporated into an artificial diet and fed...
Resource Type:: Masters Thesis
Full Text:: major pest in commercial peppermint of Western Oregon (Berry and Shields 1980). Parasitism of P

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

Thinning and urea fertilization effects on emerging grand fir (Abies grandis) foliage and growth of western spruce budworm (Choristoneura occidentalis) larvae

Creator:: Savage, Thomas J.
Abstract:: The objective of this study was to determine how the balance of carbon to nitrogen in a grand fir ecosystem affects the chemistry of emerging grand fir foliage and the growth of western spruce budworm larvae. Forest plots in the grand fir zone of eastern Oregon were thinned, thinned and...
Resource Type:: Masters Thesis

The transmission of bean yellow mosaic virus by some strains of the aphid Myzus persicae (Sulzer)

Creator:: Carpenter, Gene Paul
Resource Type:: Masters Thesis
Full Text:: LITERATURE While working with the leafhopper, Cicadulina mbila Naude, and the streak disease of maize

The role of lytic enzymes in biocontrol of sapstain fungi

Creator:: Liu, Jiajian
Abstract:: The biocontrol potential of Trichoderma harzianum strains B-2A, B-8A, B-4B, B-15B, and B-41 and Serratia plymuthica was evaluated using agar plates and wood wafers of unseasoned ponderosa pine (Pinus ponderosa laws). All five isolates of Trichoderma harzianum and Serratia plymuthica could inhibit stain fungi growth in agar plates and exhibited...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Within and between plant dispersal and distributions of adult females and immatures of Neoseiulus californicus and N. fallacis (Acari: Phytoseiidae) in bean and apple plant systems

Western larch resistance to Douglas-fir beetle attack

Transposon-induced nutritional and virulence mutants in two pathovars of Pseudomonas syringae

Transfer, characterization and mapping of white mold resistance in an advanced backcross interspecific population between Phaseolus vulgaris and Phaseolus coccineus

Toxicity of some commonly used pesticides to Trioxys Pallidus and its establishment in filbert orchards of Willamette Valley

Toxicity of peppermint monoterpenes to the variegated cutworm, Peridroma saucia Hübner

Toxicity of methyl bromide to fungi inhabiting Dahurian larch wood

Thinning and urea fertilization effects on emerging grand fir (Abies grandis) foliage and growth of western spruce budworm (Choristoneura occidentalis) larvae

The transmission of bean yellow mosaic virus by some strains of the aphid Myzus persicae (Sulzer)

The role of lytic enzymes in biocontrol of sapstain fungi

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