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Filtering by: Committee Member Yoke, J. T. Remove constraint Committee Member: Yoke, J. T. Degree Field Soils Remove constraint Degree Field: Soils Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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  • Selective inhibition of ion absorption by uranyl

    Creator:
    Mason, Benjamin J.
    Abstract:
    The research presented in this thesis evaluated the effects of uranyl (UO₂⁺⁺) upon the absorption of Li, Na, K, Rb, and Cl. Due to the biological importance of Na and K, these two ions were studied in the greatest detail. The results of this research showed that, at UO₂⁺⁺ concentrations...
    Resource Type:
    Dissertation
    Full Text:
    the members of my graduate committee - -Dr. H. J. Evans, Dr. C. T. Youngberg and Dr. William K

  • The effect of selected potassium salts on the availability of soil manganese

    Creator:
    Westermann, D. T. (Dale Thomas), 1941-
    Abstract:
    Incubation experiments with an acid poorly drained soil have shown that the application of neutral soluble salts influenced the level of extractable Mn. The application of a salt which lowered the soil pH either increased the extractable Mn or retarded the oxidation and/or fixation of extractable Mn. This effect was...
    Resource Type:
    Dissertation
    Full Text:
    committee and to Dr. T. C. Moore, who substituted on my graduate committee for Dr. H. J. Evans. To my

  • Aluminum toxicity in wheat (Triticum aestivum Vill., host)

    Creator:
    Kerridge, Peter Campbell
    Abstract:
    Wheat varieties of differential tolerance to Al were used in a series of nutrient solution experiments to study the inhibitory effects of Al on growth and nutrient uptake. The pH and the Al and P concentrations were rigorously maintained to prevent the confounding effects of Al and P precipitation and...
    Resource Type:
    Dissertation
    Full Text:
    this thesis. To other members of my graduate committee, Drs. H. J. Evans, W. H. Foote, T. L. Jackson

  • The role of soil-water depletion and plant-moisture stress in soil classification and cambial activity of Douglas-fir

    Creator:
    Thomas, Byron R.
    Abstract:
    Relationships between soil-water stress and plant-moisture stress were studied with respect to soil classification and cambial activity in Douglas-fir. The study sites were forested with Douglas-fir and located in McDonald Forest and near Marys Peak in the Oregon Coast Range. Soil-water depletion was followed by the use of gypsum blocks...
    Resource Type:
    Dissertation
    Full Text:
    implementation of this study. Acknowledgments a r e also made to Drs. J. K. Munford, W. W. Chilcote, R. Garren