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Identification of economic, social, and policy factors influencing irrigation district participation in water transactions in the Deschutes Basin

Creator:: Whitman, Cally A.
Abstract:: Surface water in the Deschutes Basin of central Oregon has been largely over allocated since the early 1900s. Therefore, rapid population growth and urban demand for water in the upper Basin lead to an increased reliance on groundwater in the last three decades. The Oregon Department of Water Resources (OWRD)...
Resource Type:: Masters Thesis
Full Text:: Dr. Marshall English, for an educational seminar on irrigation economics and management. Also, the

Nitrate and pesticide transport under pear production in clay and sandy soil

Creator:: Cao, Weidong
Abstract:: Groundwater contamination on irrigated land is of concern in this nation and around the world. In order to reduce the potential of groundwater contamination by agricultural practices such as irrigation, fertilizer and pesticide application, vadose-zone monitoring and sampling are needed. The main objective of this study was to evaluate impacts...
Resource Type:: Masters Thesis
Full Text:: my other committee members Dr. Marshall English and Dr. Clayton Paulson for their valuable advice

Estimated plant water use and crop coefficients for drip-irrigated hybrid polars

Creator:: Gochis, David J.
Abstract:: Estimations of plant water use can provide great assistance to growers, irrigators, engineers and water resource planners. This is especially true concerning the introduction of a new crop into irrigated agriculture. Growing hybrid poplar trees for wood chip stock and veneer production under agronomic practices is currently being explored as...
Resource Type:: Masters Thesis
Full Text:: committee Dr. Larry Boersma and Dr. Marshall English for their critical review and insightful input

Transport of water and solutes from tile-drained fields in the Willamette Valley, Oregon : A field scale study

Creator:: Warren, Kristina
Abstract:: Tile drainage increases aeration in the root zone of poorly drained soils by accelerating water movement from the subsurface. Water movement is the main agent of chemical transport, either transporting soluble materials directly (e.g., nitrate) or by transporting the soil particles that bind adsorptive compounds (e.g., pesticides). The detection frequency...
Resource Type:: Masters Thesis

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:: mainframe. Other committee members, Dr. Marshall English and Dr. William Boggess were extremely helpful and

Semi-emperical [sic] methods for estimating evapotranspiration in a modified marine climate

Creator:: Smith, Jerome Francis
Resource Type:: Masters Thesis
Full Text:: . Jack Istok, and Dr. Marshall English are not only a great committee, but true friends as well. If I

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:: own academic interests. To the members of my committee: Marshall English, for guidance in 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:: committee members Dr. Richard Dick, Dr. Marshall English, and Dr. Eugene Fichter for their time and advice

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:: , and my committee members Dr. Richard Cuenca, Dr. Marshall English, and Dr. Roland De Szoeke. Their

Temporal scale, cover type and climate effects on surface energy and mass exchange

Creator:: Kimball, John S.
Resource Type:: Dissertation
Full Text:: suggestions: Dr. Bill Braunworth, Dr. Marshall English and Dr. Hermann Gucinski. My sincere gratitude and

ScholarsArchive@OSU

Identification of economic, social, and policy factors influencing irrigation district participation in water transactions in the Deschutes Basin

Nitrate and pesticide transport under pear production in clay and sandy soil

Estimated plant water use and crop coefficients for drip-irrigated hybrid polars

Transport of water and solutes from tile-drained fields in the Willamette Valley, Oregon : A field scale study

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

Semi-emperical [sic] methods for estimating evapotranspiration in a modified marine climate

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

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

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

Temporal scale, cover type and climate effects on surface energy and mass exchange

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