Index Catalog // ScholarsArchive@OSU

Environmental behavior of Dacthal

Creator:: Wettasinghe, Asoka
Abstract:: The herbicide, Dacthal (dimethyl 2,3,5,6,-tetrachloroterephthalate) is hydrolyzed to give the corresponding diacid and this derivative is a common contaminant in ground water. In the Ontario region of eastern Oregon the use of this herbicide on onions has resulted in the contamination of an aquifer with this derivative. Since movement to...
Resource Type:: Masters Thesis
Full Text:: Oregon the use of this herbicide on onions has resulted in the contamination of an aquifer with this

The agronomic, environmental, and economic implications of the introduction of terbacil for weed control in Oregon commercial peppermint operations

Creator:: Harris, James O.
Abstract:: The use of terbacil for weed control was adapted by a high percentage of Oregon peppermint growers soon after its introduction in 1967. To help clarify some of the implications of terbacil usage, three studies were undertaken to collect information concerning (a) the movement and build-up of terbacil in various...
Resource Type:: Masters Thesis
Full Text:: of the introduction of terbacil for weed control in Oregon commercial peppermint operations AN

Procarbazone-sodium effect on rotational crops and its dissipation

Creator:: Al-Sayagh, Khalid Faraj
Resource Type:: Dissertation
Full Text:: at Oregon, Corvallis and Pendleton, to detect the effect of procarbazone- sodium residues on

Emergence and growth of nine accessions of diclofop-resistant Italian ryegrass (Lolium multiflorum L.) and multiple resistance to other herbicides

Creator:: Kunjo, Ebrima Madi
Resource Type:: Masters Thesis
Full Text:: western Oregon. Diclofop ((+)-2-(4-(2,4-dichlorophenoxy) phenoxy] propanoic acid) (Hoelon) has been

Multiple-resistant Italian ryegrass (Lolium perenne spp. multiflorum) populations in Oregon

Creator:: Liu, Mingyang
Abstract:: Italian ryegrass (Lolium perenne spp. multiflorum) is a common weed management problem in turfgrasses, cereals and non-crop areas in the United States. In Oregon, the number of populations with multiple-resistance continues to increase. To manage these resistant populations, the resistance patterns must be determined. In this study, five Italian ryegrass...
Resource Type:: Masters Thesis
Full Text:: natural selection or accumulation of herbicide resistant genes. RESEARCH OBJECTIVES In Oregon

Hare barley (Hordeum murinum ssp. leporinum) biology and management in cool season perennial grass pastures of western Oregon

Creator:: Haavisto, Jessica Lee
Abstract:: Hare barley (Hordeum murinum ssp. leporinum) is a cool season annual grass that invades pastures and range areas around the world. A documented weed management issue in several Oregon counties, hare barley may infest several thousand acres in western Oregon. This study was conducted to investigate the biology and develop...
Resource Type:: Masters Thesis
Full Text:: Grass Pastures of Western Oregon. Abstract approved

The effects of experimental herbicide treatments on the fish environment in Siltcoos Lake, Oregon

Creator:: Kerns, Orra Edwin
Resource Type:: Masters Thesis
Full Text:: Experimental Herbicide Treatments on the Fish Environment in Silteoo Lake, Oregon Abstract approved The

ALS-inhibitor resistant downy brome (Bromus tectorum L.) biotypes in Oregon : Mechanism of resistance, fitness, and competition

Creator:: Park, Kee-Woong
Abstract:: Understanding the mechanism of resistance, relative fitness and competitiveness of herbicide resistant biotypes is important to predict population dynamics and to establish resistance management strategies. This study was conducted to determine the level of resistance to acetolactate synthase (ALS) inhibitors and the mechanism of resistance of ALS-inhibitor resistant downy brome...
Resource Type:: Dissertation
Full Text:: Downy Brome (Bromus tectorum L.) Biotypes in Oregon: Mechanism of Resistance, Fitness, and Competition

Performance of Willamette Valley native plants following herbicide exposure

Creator:: Blakeley-Smith, Matthew R.
Abstract:: Prairies were once the dominant vegetation type in Oregon's Willamette Valley. Land use conversion, fire suppression, succession, and invasive species have reduced Willamette Valley prairies to less than 1% of their historical area. The remnant prairies that persist today are small in size and are highly fragmented. Marginal strips of...
Resource Type:: Masters Thesis
Full Text:: herbicide in Benton County, Oregon, as well as worldwide (Woodburn 2000). Herbicide usage was determined

Effects of weed control on vegetation dynamics in Pacific Northwest conifer plantations

Creator:: Chen, Fen-Hui
Abstract:: Weed control in Pacific Northwest forests has been criticized for its potential impact on biodiversity. Changes were evaluated in conifer growth, diversity of vegetation in situ and of recruiting plants through different regeneration mechanisms after applying temporally-varied weed control by herbicide treatments based on the critical period concept. Conifer size...
Resource Type:: Dissertation

ScholarsArchive@OSU

Environmental behavior of Dacthal

The agronomic, environmental, and economic implications of the introduction of terbacil for weed control in Oregon commercial peppermint operations

Procarbazone-sodium effect on rotational crops and its dissipation

Emergence and growth of nine accessions of diclofop-resistant Italian ryegrass (Lolium multiflorum L.) and multiple resistance to other herbicides

Multiple-resistant Italian ryegrass (Lolium perenne spp. multiflorum) populations in Oregon

Hare barley (Hordeum murinum ssp. leporinum) biology and management in cool season perennial grass pastures of western Oregon

The effects of experimental herbicide treatments on the fish environment in Siltcoos Lake, Oregon

ALS-inhibitor resistant downy brome (Bromus tectorum L.) biotypes in Oregon : Mechanism of resistance, fitness, and competition

Performance of Willamette Valley native plants following herbicide exposure

Effects of weed control on vegetation dynamics in Pacific Northwest conifer plantations

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