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Filtering by: Committee Member Appleby, A. Remove constraint Committee Member: Appleby, A.

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  • Simulation and field validation of heat and water flow during soil freezing and thawing

    Creator:
    Pikul, Joseph Lawrence
    Abstract:
    Freeze/thaw cycles are numerous in agricultural soils of the Pacific Northwest. Potential loss of soil by erosion is high whenever a soil thaws from the surface creating a saturated soil overlying an impermeable frozen layer. Field studies were conducted to investigate the effect of surface residue on soil freezing. Residue...
    Resource Type:
    Dissertation

  • 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