Index Catalog // ScholarsArchive@OSU

Pasture renovation with herbicide suppression of weeds and no-till seeding of orchardgrass

Creator:: Fitzsimmons, James P.
Abstract:: No-till pasture renovation can increase the quality and forage yield of underproductive pastures. Decreased erosion, lower costs, and less lost grazing time are advantages of no-till renovation compared to conventional renovation. Unwanted vegetation is first controlled with herbicides to decrease competition for introduced orchardgrass. Two field trials were conducted using...
Resource Type:: Masters Thesis
Full Text:: Renovation with Herbicide Suppression of Weeds and No-till Seeding of Orchardgrass. Abstract approved: No

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Creator:: Esterson, Andrew
Abstract:: Invasive plants have the capacity to transform landscapes and alter ecosystem function, causing significant economic and ecological damage. These effects include displacement and reduction of native flora and fauna, altered fire regimes, modification of biotic and abiotic soil properties, as well as local, regional, and global economic impacts. With such...
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Botany and Plant Pathology presented on May 27, 2016. Title: The Role

Preparing sustained release dosage forms of nifedipine by hot-melt coating method

Creator:: Le, Hang Thi
Abstract:: A nifedipine sustained release dosage form was prepared by using hot-melt batch coating. Substrates are sugar beads, mesh size 30-35. Stearic acid, Acid Triglyceride, and carnauba wax were coating agents used to make single layer coated beads and multiple layer coated beads containing nifedipine. Dissolution of nifedipine from the beads...
Resource Type:: Masters Thesis
Full Text:: system has a special property. The rate of drug release is constant in spite of the fluctuation in

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

Creator:: Seyer, Susan C.
Resource Type:: Masters Thesis
Full Text:: degree of Master of Science in Botany and Plant Pathology presented on December 14, 1979 Title

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Creator:: Perkins, Lora B.
Abstract:: There is growing interest in using nutrient manipulations to control invasive plants such as Brornus lectorurn L. (cheatgrass). Both labile (sucrose) and recalcitrant (straw and sawdust) carbon sources are added to the soil surface to reduce plant available soil N via soil microbial immobilization. However, the application rates used in...
Resource Type:: Masters Thesis
Full Text:: Master of Science in I3otany and Plant Pathology presented on December 1, 2006. Title: Hydromuich

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Creator:: Gordon, Tyler C.
Abstract:: Stem rust, caused by the fungus Puccinia graminis subsp. graminicola, can cause yield reductions exceeding 90% on perennial ryegrass (Lolium perenne L.) crops grown for seed if not treated with fungicide in the spring. There is evidence that late-spring stem rust epidemics are initiated by populations that survived the winter....
Resource Type:: Masters Thesis
Full Text:: Tyler C. Gordon for the degree of Master of Science in Botany and Plant Pathology presented on

Factors influencing the production and survival of inoculum of Elytroderma deformans

Creator:: Laird, Peter Paul
Abstract:: This study concerns factors affecting production and survival of ascospores of Elytroderma deformans (Weir) Darker, a needle cast of ponderosa pine (Pinus ponderosa Laws.). The results show that summer cooling and a reduction in host vigor delays and diminishes the number of fertile hysterothecia produced. Evidence is offered for classification...
Resource Type:: Masters Thesis
Full Text:: No. % 9/11 No. % 10/14 No. % 4 I. Asci not formed 2 17 1 8 3 13 3 13 4 36 3 27 II. Asci

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

Creator:: Temple, Todd N.
Abstract:: Competitive exclusion has been the mechanism hypothesized to account for the biological control of fire blight disease of pear and apple by the bacterium Pseudomonas fluorescens A506 (A506). Recent laboratory assays demonstrated, however, that A506 produces an antibiotic that is toxic to the fire blight pathogen, Erwinia amylovora, when cultured...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Botany and Plant Pathology on May 27. 2003. Title: Effect of Iron on Biological

Overstory Structure and Community Characteristics of Oregon Ash (Fraxinus latifolia) Forests of the Willamette Valley, Oregon

Creator:: Prive, Sean
Abstract:: As species of ash trees become increasingly threatened worldwide by exotic pests and pathogens, it is important to develop descriptions of their ecologies that help guide the conservation and restoration of forests in which they are a major component. Oregon ash (Fraxinus latifolia) is a dominant tree species in wetland...
Resource Type:: Masters Thesis
Full Text:: agent of ash dieback. Forest Pathology, 39(5), 304-308. Magee, T. K., & Kentula, M. E. (2005

Pathology, tissue residues and viral-induced mortality in mice exposed to lead and cadmium

Creator:: Exon, Jerry Hugh
Abstract:: Lead (Pb) and cadmium (Cd) are naturally occurring heavy metals which have been redistributed to a large extent by man in the environment. These metals have certain common toxic sites of action on biological systems of mammals. Simultaneous exposure to Pb and Cd is highly probable due to common sources...
Resource Type:: Masters Thesis
Full Text:: Pathology, tissue residues and viral-induced mortality in

ScholarsArchive@OSU

Pasture renovation with herbicide suppression of weeds and no-till seeding of orchardgrass

The Role of Plant-soil Feedback in the Invasion of Brachypodium sylvaticum in Douglas-fir Forests

Preparing sustained release dosage forms of nifedipine by hot-melt coating method

Vegetative ecology of a montane mire, Crater Lake National Park, Oregon

Hydromulch tackifier and sucrose effects on microbial nitrogen and Bromus tectorum biomass

Overwintering survival of stem rust on perennial ryegrass : construction of a simulation model, and effects of the mycoparasite Sphaerellopisis filum

Factors influencing the production and survival of inoculum of Elytroderma deformans

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

Overstory Structure and Community Characteristics of Oregon Ash (Fraxinus latifolia) Forests of the Willamette Valley, Oregon

Pathology, tissue residues and viral-induced mortality in mice exposed to lead and cadmium

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