Index Catalog // ScholarsArchive@OSU

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Creator:: Sether, Diane M.
Abstract:: Peppermint, Mentha piperita 'Black Mitcham' was established as a host for tomato spotted wilt virus-impatiens serotype (TSWV-I). TSWV-I infection of peppermint, initially observed in a research greenhouse (Corvallis, OR), included stunting and downward curling of leaves accompanied by bronzing, and occasionally tip necrosis. Young leaves appeared either symptomless, deformed, or...
Resource Type:: Masters Thesis
Full Text:: constructive criticisms this thesis may never have come to be. Also, I thank Dr. Ken Johnson for his review of

Transport of water and solutes from tile-drained fields in the Willamette Valley, Oregon : A field scale study

Creator:: Warren, Kristina
Abstract:: Tile drainage increases aeration in the root zone of poorly drained soils by accelerating water movement from the subsurface. Water movement is the main agent of chemical transport, either transporting soluble materials directly (e.g., nitrate) or by transporting the soil particles that bind adsorptive compounds (e.g., pesticides). The detection frequency...
Resource Type:: Masters Thesis

Land ownership and forest cover in the Oregon Coast Range : spatial pattern and social ground-truthing

Creator:: Stanfield, Brooks J.
Abstract:: We use qualitative and quantitative methods to explore social and spatial relationships between land ownership and forest cover in the Oregon Coast Range. Using a Geographic Information System (GIS) and regression analysis, we tested for spatial relationships between the structure of land ownership and forest cover across 66 watersheds in...
Resource Type:: Masters Thesis
Full Text:: me photocopy the Lincoln County ownership maps his father made. Ken McCall went out of his way to

Development and reproduction of convergent lady beetle feeding on green peach aphid exposed to Btt

Creator:: Dogan, Elif Barçin
Resource Type:: Masters Thesis
Full Text:: . Hayes and Dr. Ken Johnson for their review of my manuscripts and participating on my committee. My

Response of wood-boring beetles (Coleoptera: Buprestidae, Cerambycidae) to prescribed understory burning in mixed-conifer stands of southwestern Oregon

Creator:: Duane, Maureen V.
Abstract:: Prescribed burning is increasingly being used as a management tool to reduce potential fuels on the forest floor and promote stand vigor through removal of dense, crowded vegetation. Because fire affects both the standing vegetation and the amount of downed wood in the ecosystem, it is imperative to examine how...
Resource Type:: Masters Thesis
Full Text:: J. Boone Kauffman for his advice, as well as Ken Johnson, both of whom served on my corn rn ittee

Microsatellite Marker Development, Characterization and Mapping in European Hazelnut (Corylus avellana L.), and Investigation of Novel Sources of Eastern Filbert Blight Resistance in Corylus

Creator:: Bhattarai, Gehendra
Abstract:: European hazelnut, an important nut crop in Oregon agriculture, is threatened by the fungal disease eastern filbert blight (EFB) caused by Anisogramma anomala (Peck) E. Müller. The hazelnut breeding program at OSU has been working on development of EFB-resistant cultivars. DNA markers allow mapping of traits using segregating progenies and...
Resource Type:: Masters Thesis
Full Text:: Dr. Nahla Bassil, Dr. Ken Johnson and Dr. Debashis Mondal. My sincere thanks to David Smith, who

Histological comparisons of needle tissues of four species of white pine infected by Cronartium ribicola

Creator:: Sweeney, Katarina
Abstract:: Hypersensitive response-like (HR-like) needle reactions to infection by the white pine blister rust pathogen, Cronartium ribicola, have been reported for several species of five needle pines native to western North America. The best-studied examples are in Pinus monticola and P. lambertiana. In these species a "needle spot" phenotype has been...
Resource Type:: Masters Thesis
Full Text:: , Ken Johnson and Tom Wolpert for valuable discussions about my research and Barb Taylor for support

Mapping QTL for root rot resistance, root traits, and morphological trait in a common bean recombinant inbred population

Creator:: Hagerty, Christina H.
Abstract:: Root rot diseases of bean (Phaseolus vulgaris L.) are a problem wherever they are grown, and are a major constraint to dry edible and snap bean production. Root rot is a primary yield limitation of snap bean production in the US, especially within the top three snap bean producing states...
Resource Type:: Masters Thesis

Effect of wheat cultivar mixtures on populations of Puccinia striiformis races

Creator:: DiLeone, Julie A.
Abstract:: This study quantified the frequency of simple versus complex races of Puccinia striiformis Westend. in mixtures of wheat cultivars possessing different race-specific resistance genes. A simple race of a pathogen can infect only one component, and a complex race of the pathogen can infect two or more components of an...
Resource Type:: Masters Thesis
Full Text:: thank my committee members, Drs. Ken Johnson, Warren Kronstad, and Norman Anderson for helping me to

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:: masters program. My other committee members, Marcos Kogan, Robin Rosetta and Ken Johnson were always

ScholarsArchive@OSU

Transmission efficiency and life table parameters of western flower thrips, Frankliniella occidentalis (Pergande) exposed to tomato spotted wilt virus-impatiens serotype

Transport of water and solutes from tile-drained fields in the Willamette Valley, Oregon : A field scale study

Land ownership and forest cover in the Oregon Coast Range : spatial pattern and social ground-truthing

Development and reproduction of convergent lady beetle feeding on green peach aphid exposed to Btt

Response of wood-boring beetles (Coleoptera: Buprestidae, Cerambycidae) to prescribed understory burning in mixed-conifer stands of southwestern Oregon

Microsatellite Marker Development, Characterization and Mapping in European Hazelnut (Corylus avellana L.), and Investigation of Novel Sources of Eastern Filbert Blight Resistance in Corylus

Histological comparisons of needle tissues of four species of white pine infected by Cronartium ribicola

Mapping QTL for root rot resistance, root traits, and morphological trait in a common bean recombinant inbred population

Effect of wheat cultivar mixtures on populations of Puccinia striiformis races

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

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