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Filtering by: Has journal Journal of Alloys and Compounds Remove constraint Has journal: Journal of Alloys and Compounds Committee Member Chilcote, William W. Remove constraint Committee Member: Chilcote, William W. Decade 1960-1969 Remove constraint Decade: 1960-1969

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  • 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:
    AND STABILITY RELATIONSHIPS OF FOUR WESTERN CASCADE SOILS Abstract approved: Redacted for privacy

  • 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:
    significant effect in reducing the toxicity of herbicides. Magnesium and atrazine were chosen to study this

  • 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:
    magnesium and photoperiod AN ABSTRACT OF THE THESIS OF RONALD GLENN BRENCHLEY for the PH. D. (Name) in

  • 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:
    (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments AN ABSTRACT OF THE

  • 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:
    failures from the use of this compound. Areas of study included (1) site of uptake and phytotoxic effect