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Filtering by: Subject Nitrates -- Environmental aspects -- Oregon -- Morrow County Remove constraint Subject: Nitrates -- Environmental aspects -- Oregon -- Morrow County Advisor Warkentin, Benno P. Remove constraint Advisor: Warkentin, Benno P.

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  • Nitrate and water under terraced dryland wheat production in Oregon

    Creator:
    Strock, Jeffrey S.
    Abstract:
    Dry land agriculture using summer fallow is a common crop production practice in the Columbia Plateau region of eastern Oregon. Farmed-over level terraces are used to control surface water runoff and soil erosion. More than 70 percent of the average annual precipitation around Pendleton, Oregon (350 - 400 mm) falls...
    Resource Type:
    Masters Thesis
    Full Text:
    Nitrate and water under terraced dryland wheat production in

  • Deep soil nitrogen survey, Lower Umatilla Basin, Oregon

    Creator:
    del Nero, Zachary Augustus
    Abstract:
    Soils of 49 agricultural and 2 "native condition" sites in the Lower Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning in Fall of 1992. Several sites were sampled in Spring and Fall 1993 in order to indicate movement or loss of residual soil nitrogen over time....
    Resource Type:
    Masters Thesis
    Full Text:
    Umatilla Basin, Oregon were sampled for nitrate-nitrogen, ammonium-nitrogen, chloride, and pH beginning