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Filtering by: Advisor Alban, L. A. Remove constraint Advisor: Alban, L. A. Creator Etter, Harold Mac Donald Remove constraint Creator: Etter, Harold Mac Donald

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  • Chemical properties of soils related to seasonal fluctuations in exchangeable potassium

    Creator:
    Etter, Harold Mac Donald
    Abstract:
    Representative sites of the Dayton, Woodburn, Jory, Quillayute, Astoria, Willamette, Walla Walla, Deschutes, Laki and Owyhee soil series were investigated for seasonal changes in exchangeable potassium in air dry samples. No consistent seasonal variations were found which could be attributed to wetting and drying in the field. Cropping reduced the...
    Resource Type:
    Masters Thesis
    Full Text:
    The author gratefully acknowledges the advice and assistance offered by Dr. L. A. Alban throughout