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Filtering by: Creator Wanser, Shelby H. Remove constraint Creator: Wanser, Shelby H. Committee Member English, Marshall Remove constraint Committee Member: English, Marshall

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  • Impact of artificial flooding on farm profits and streamflow in Echo Meadows, Oregon

    Creator:
    Seely, Harold E.
    Abstract:
    Competition for water both from within the irrigation community and from outside interests has been a major source of conflict in the West. In the Umatilla Basin of central Oregon, Umatilla River water is diverted to irrigate a variety of crops, while instream flows have value in salmonid production. Historically,...
    Resource Type:
    Masters Thesis
    Full Text:
    -0.23 Silt Loam 72A Power Silt 0.18-0.25 Loam 65A Pedigo 0.11- .015 Loamy Fine Sand 1 19A Wanser

  • Evaluation of techniques for on-farm monitoring of percolation and irrigation system performance

    Creator:
    Louie, Michael J.
    Abstract:
    Efficient use of water in agricultural production involves accurate assessment and control of the quantity and spatial uniformity of excess percolation. Passive Capillary Samplers (PCAPS), which sample water from the vadose zone have shown potential to provide superior estimates of soil water flux compared to alternative methods. In a four-year...
    Resource Type:
    Masters Thesis
    Full Text:
    , Patrick Shelby, Jason Smesrud, Lance Gatchell, and Dr. John Selker. Data collection, interpretation, and

  • Peppermint irrigation and nitrogen management for the reduction of nitrate loading to groundwater

    Creator:
    Smesrud, Jason K.
    Abstract:
    The agricultural production of peppermint has been shown to contribute significant quantities of nitrate-nitrogen to groundwater recharge. In an effort to provide new tools for increasing nitrogen efficiency within peppermint production, three research questions were proposed: i) How should plant tissue samples be collected to achieve the greatest precision when...
    Resource Type:
    Masters Thesis
    Full Text:
    monitor nitrate leaching under several important crops in Lane County (Shelby, 1995). In this study, the

  • Assessment of variability and monitoring methods for leaching under cover crop management

    Creator:
    Hess, Mario
    Abstract:
    The contamination of ground water resources represents a serious problem and a prominent threat to the health of our society. This study focuses on the leaching of inorganic anions as a function of agricultural practices under natural field conditions. In order to enhance the understanding of such leaching processes, this...
    Resource Type:
    Masters Thesis
    Full Text:
    . More "Thanks so much"-messages go to Doug Oetter, Abdellatif Boussaid, and Patrick Shelby for editing