Index Catalog // ScholarsArchive@OSU

Integrated control of tansy ragwort (Senecio jacobaea L.)

Creator:: Powers Evans, Claudia L.
Resource Type:: Masters Thesis
Full Text:: the writing of this thesis. To Dr. Ralph E. Whitesides and Dr. Ralph Berry for their review of this

Response to fenamiphos, extraction techniques and population dynamics of Pratylenchus penetrans on western Oregon red raspberry

Creator:: Lolas, Mauricio
Abstract:: The effects of fenamiphos on soil and root populations of Pratylenchus penetrans were evaluated in four red raspberry cv. Willamette fields in Northwestern Oregon. Field 1 was a silty clay loam with 53% organic matter (OM). Field 2 and 3 were silty loam soils with 3.25 and 2.55% OM, respectively...
Resource Type:: Masters Thesis
Full Text:: penetrans on Western Oregon Red Raspberry. Redacted for PrivacyAbstract approved: fr3 Dr. Russell E. Ingham

Chemical ecology of Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) : factors affecting biology and application of pheromone

Creator:: Hussain, Aftab
Resource Type:: Dissertation
Full Text:: members Drs. Ralph Berry, and Russ Karow are greatly appreciated. I would like to thank Dr. W. E

Establishment of Kura clover for seed with wheat intercrops

Creator:: Snelling, John P.
Abstract:: Kura clover (Trifolium ambiguum M. Bieb.) is slow to establish and has low seed yields the year after establishment. Intercropping a cereal grain during clover seed field establishment could provide additional revenue to seed growers, provided that intercropping did not jeopardize future clover seed yields. Factorial combinations of spring- and...
Resource Type:: Masters Thesis
Full Text:: Grabe, who taught me about seed science; and Ralph Berry, who taught me that pest management is a

Evaluation of behavioral response of Aedes aegypti mosquitoes to repellents using a novel olfactometer

Creator:: Doğan, Elif Barc̦in
Abstract:: Mosquito-borne pathogens are the cause of important, often deadly diseases worldwide; and, use of repellents is one of the components of mosquito control programs. The most effective mosquito repellent is N,N-dimethyl-m-toluamide, known as DEET. Speculation on the adverse effects of DEET have been on the rise since the 1980s, and...
Resource Type:: Dissertation
Full Text:: valuable suggestions. I must also recognize contributions of the rest ofmy graduate committee. Dr. Ralph

Enhancement of biological control with beneficial insectary plantings

Creator:: Colley, Micaela Ruth
Abstract:: Five field experiments were conducted to evaluate the relative attractiveness of potential beneficial insectary plants to aphidophagous hover flies and parasitic Hymenoptera and the effectiveness of interplanting selected flowering plants in a broccoli field to enhance biocontrol of the cabbage aphid and green peach aphid. In 1996 we established a...
Resource Type:: Masters Thesis
Full Text:: to Paul Jepson, Anita Azarenko, and Ralph Berry. In the first year of my research I was fortunate

Soil variability on steep, skeletal forested slopes of the Umpqua National Forest, Oregon

Creator:: Myhrum, Ronald P.
Abstract:: This study was undertaken to determine both the amount and the spatial variability of sand, silt, clay, and six fractions of coarse fragments in soils representing harsh sites for reforestation. Particle size data were collected because of their direct relationship to water holding capacity and the plantability and survivability of...
Resource Type:: Masters Thesis
Full Text:: , Dr. Henry Froehlich and Dr. Ralph Berry. More important- ly, I thank Dr. Herb Huddleston for being

Effect of in-servicing teachers on student achievement in integrated pest management

Creator:: Doerner, Robert W.
Abstract:: The primary purpose of this study was to determine if inservicing Agriculture Science and Technology (AST) teachers over a new curriculum, resulted in increased student achievement. Specific objectives were to: 1) determine the subject areas (lessons) for a curriculum for teaching Integrated Pest Management (IPM); 2) develop a curriculum for...
Resource Type:: Masters Thesis
Full Text:: guiding this research to its completion. I also wish to thank Dr. Lee Cole, Dr. Ralph Berry, and Dr. Les

Population viability analysis of endangered plant species : an evaluation of stochastic methods and an application to a rare prairie plant

Creator:: Kaye, Thomas N.
Abstract:: Transition matrix models are one of the most widely used tools for assessing population viability. The technique allows inclusion of environmental variability, thereby permitting estimation of probabilistic events, such as extinction. However, few studies use the technique to compare the effects of management treatments on population viability, and fewer still...
Resource Type:: Dissertation
Full Text:: Blouin, Steve Radosevich, and Ralph Berry, for taking the time to help me and guide my studies. Finally

Water relations, stomatal conductance, and abscisic acid content of container-grown apple (Malus domestica Borkh.) plants in response to sorbitol-induced osmotic stress

Creator:: Guak, Sunghee
Abstract:: Sorbitol-induced osmotic stress (SIOS) to the root was found to be effective in reducing transpirational water loss in plants during water stress. Mechanisms of SIOS in stomatal control were investigated in containerized apples (Malus domestica Borkh. 'Gala'/M26) when leaf water potential (Ψw), osmotic potential (Ψs), turgor potential (Ψp), stomatal conductance...
Resource Type:: Dissertation
Full Text:: thank you to the members of my graduate committee: Drs. Ralph Berry, Michael Burke, James Green, and

ScholarsArchive@OSU

Integrated control of tansy ragwort (Senecio jacobaea L.)

Response to fenamiphos, extraction techniques and population dynamics of Pratylenchus penetrans on western Oregon red raspberry

Chemical ecology of Tribolium castaneum Herbst (Coleoptera: Tenebrionidae) : factors affecting biology and application of pheromone

Establishment of Kura clover for seed with wheat intercrops

Evaluation of behavioral response of Aedes aegypti mosquitoes to repellents using a novel olfactometer

Enhancement of biological control with beneficial insectary plantings

Soil variability on steep, skeletal forested slopes of the Umpqua National Forest, Oregon

Effect of in-servicing teachers on student achievement in integrated pest management

Population viability analysis of endangered plant species : an evaluation of stochastic methods and an application to a rare prairie plant

Water relations, stomatal conductance, and abscisic acid content of container-grown apple (Malus domestica Borkh.) plants in response to sorbitol-induced osmotic stress

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