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Filtering by: Alternative title ssim Station bulletin 422 Remove constraint Alternative title ssim: Station bulletin 422 Committee Member Chilcote, William W. Remove constraint Committee Member: Chilcote, William W. Rights Statement Copyright Not Evaluated Remove constraint Rights Statement: Copyright Not Evaluated

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John Wesley Powell : science and reform in a positive context

Creator:

Zernel, John Joseph, 1945-

Abstract:

John Wesley Powell worked actively for public land system reform while a director of geographical and geological surveys in the West from 1869 to 1894. Although this has won him acclaim as a conservationist, the basis of Powell's linkage of reform with scientific work is poorly understood. A study of...

Resource Type:

Dissertation

Full Text:

Hayden, King, Powell, and Wheeler Surveys, by L. F. Schmeckebier, Geological Survey Bulletin No. 222
Genetic and stability relationships of four Western Cascade soils

Creator:

Paeth, Robert Carl, 1925-

Abstract:

A sequence of soils derived from tuffaceous rocks was sampled on the H. J. Andrews Experimental Forest and adjacent U. S. Plywood land to determine some genetic and stability relationships. The less than two micron size fraction from each sample was characterized by x-ray diffraction with respect to crystalline clay...

Resource Type:

Dissertation

Full Text:

Experiment Station, Corvallis and the Oregon State Agricultural Experiment Station. A special note of
Interaction of cycloate with postemergence herbicides on sugarbeets and weeds

Creator:

Olson, Phillip David Leroy

Resource Type:

Masters Thesis

Full Text:

1technical bulletin printed by Stauffer Chemical Company. Because of its high vapor pressure, cycloate
Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

Creator:

Turner, Robert Bruce

Abstract:

Studies were conducted from 1962 to 1966 to investigate the effectiveness of several practices in manipulating medusahead (Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated ecosystems by releasing competition in favor of perennial grasses. Several herbicide treatments were evaluated for selective control of medusahead and cheatgrass (Bromus tectorum L. )...

Resource Type:

Dissertation

Full Text:

with the Oregon Agricultural Experiment Station Project 486 -- "The Control of Medusahead on Oregon
Responses of vegetation and sheep to three grazing pressures

Creator:

Thetford, Frank Oren

Abstract:

A study was conducted over a two year period, 1973 through 1974, on perennial ryegrass-subclover pastures with stocking rates of 7.4 (moderate), 9. 9 (heavy), and 12.4 (overstocked) ewes per hectare to establish guidelines on stocking intensity for dryland improved pastures in western Oregon. Climatic conditions varied annually and caused...

Resource Type:

Dissertation

Full Text:

his encouragement. Appreciation is also expressed to the Oregon Agricultural Experiment Station for
The influence of magnesium on the toxicity of atrazine

Creator:

Brenchley, Ronald Glenn

Abstract:

Atrazine is an asymmetrical s-triazine herbicide used pre- and post emergence for weed control in many crops. Triazine herbicides have been used in the Pacific-Northwest for weed control in orchard crops. Under certain conditions where trees were grown in nutrient deficient areas, it was noted that toxic symptoms due to...

Resource Type:

Masters Thesis

Full Text:

. To the Oregon Agricultural Experiment Station and the National Institute of Health for financial
The control of colonial bentgrass (Agrostis tenuis Sibth.) with N-(phosphonomethyl) glycine

Creator:

Brewster, Bill D.

Resource Type:

Masters Thesis
Factors influencing the herbicidal activity of dimethyl 2,3,5,6-tetrachloroterephthalate

Creator:

McKinley, James Raleigh

Abstract:

Studies were conducted to determine the site of DCPA toxicity on annual ryegrass. This was done by means of a technique which used pyrex tubing and a vapor barrier to separate exposure of coleoptile and roots of emerging grass seedlings to various concentrations of DCPA. Coleoptiles that emerged through treated...

Resource Type:

Masters Thesis

Full Text:

the carbamate herbicides. Luther Fitch of the Malheur Branch Experiment Station in Oregon (12
Influence of weed density on efficacy of two soil-applied herbicides

Creator:

Burrill, L. C.

Abstract:

Several studies were conducted to determine the effect of weed density on herbicide efficacy. Diuron [3-(3, 4- dichlorophenyl) -1, 1- dimethylurea] was tested on various densities of Italian ryegrass (Lolium multiflorum Lam. ) under greenhouse and field conditions. Cycloate (S-ethyl N-ethylthiocyclohexanecarbamate) was tested on green foxtail (Setaria viridis (L. )...

Resource Type:

Masters Thesis

Full Text:

Experiment Station. This was the only trial for which the technique differed from that discussed in the
The response of tomatoes to atrazine as affected by magnesium and photoperiod

Creator:

Brenchley, Ronald Glenn

Abstract:

Studies were conducted to determine the nature of the interaction between atrazine (2-chloro-4-ethylamino-6-isopropylaminos- triazine) and magnesium on tomatoes. This interaction was studied under two light regimes: continuous light and a 12-hour photoperiod. Tomato plants were grown in sand cultures at three levels of magnesium fertilization. Four weeks after planting, atrazine...

Resource Type:

Dissertation

Full Text:

difficult. To the Oregon Agricultural Experiment Station and the Nation- al Institute of Health for

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Academic Affiliation

Farm Crops4
Agronomic Crop Science3
General Science1
Range Management1
Rangeland Resources1
more Academic Affiliations »

Advisor

Appleby, Arnold P.6
Furtick, William R.1
Harward, Moyle E.1
Krueger, William C.1
Morris, Robert J. jr1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1965 to 1983

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Committee Member

Chilcote, William W.[remove]11
Burr, Ronald J.2
Chilcote, David O.2
Berry, Ralph E.1
Church, David C.1
more Committee Members »

Creator

Brenchley, Ronald Glenn2
Brewster, Bill D.1
Burrill, L. C.1
Mckinley, James Raleigh1
Olson, Phillip David Leroy1
more Creators »

Date

Date range begin – Date range end

Current results range from 1965 to 1983

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Decade

1980-19891
1970-19795
1960-19695

Degree Field

Farm Crops4
Agronomic Crop Science3
General Science1
Range Management1
Rangeland Resources1
more Degree Fields »

Degree Level

Doctoral6
Master's5

Degree Name

Doctor of Philosophy (Ph.D.)6
Master of Science (M.S.)5

Language

English [eng]11

Non-Academic Affiliation

Oregon State University. Graduate School11

Peer Reviewed

No11

Resource Type

Dissertation6
Masters Thesis5

Rights Statement

Copyright Not Evaluated[remove]11

Subject

Herbicides4
Weeds -- Control2
Agrostis1
Forage plants -- Oregon1
Grazing1
more Subjects »

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