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Filtering by: Creator Boyd, Chad S. Remove constraint Creator: Boyd, Chad S. Degree Level Doctoral Remove constraint Degree Level: Doctoral

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  • Exploration of the feasibility of developing a winter hardy 'Marion' blackberry through genetic engineering

    Creator:
    Meng, Rengong
    Abstract:
    Experiments focusing on plant growth regulators’ concentrations and combination, mineral salt formulations and TDZ pretreatment formations were conducted to optimize in vitro shoot regeneration from leaf and petiole explants of 'Marion' blackberry. Optimum shoot formation was obtained when stock plants were incubated in TDZ pretreatment medium for three weeks before...
    Resource Type:
    Dissertation
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    through genetic engineering Abstract approved: Chad E. Finn Experiments focusing on plant

  • Co-producing Software for Environmental and Ecological Visualization

    Creator:
    Zanocco, Chad
    Abstract:
    Environmental scientists, land managers, and policy actors are increasingly presented with high-stakes high-uncertainty problems stemming from human-ecosystem interactions. To help address these problems, scientists frequently use models that produce enormous geospatial and temporal datasets that are constantly modified and often seek input from communities outside their discipline. To assist scientists—as...
    Resource Type:
    Dissertation
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    AN ABSTRACT OF THE DISSERTATION OF Chad Zanocco for

  • Evaluation of genetic diversity in wild populations of black raspberry (Rubus occidentalis L.)

    Creator:
    Dossett, Michael
    Abstract:
    In recent years, there has been renewed interest in black raspberry (Rubus occidentalis L.) breeding. This has been spurred, in part, by an increase in black raspberry consumption due to studies that have shown them to be particularly high in anthocyanin content indicating high levels of antioxidants. Present cultivars are...
    Resource Type:
    Dissertation
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    Raspberry (Rubus occidentalis L.) Abstract approved: Chad E. Finn In recent years

  • Addressing Data Resolution in Precision Agriculture

    Creator:
    Kelley, Jason
    Abstract:
    Irrigated agriculture constitutes the greatest consumptive water use globally, so that irrigation efficiency measures are an important part of global efforts to best utilize this limited resource. However, greater irrigation efficiency must be achieved while simultaneously maintaining or increasing crop yields and farming profitability. Incremental water use decisions are made...
    Resource Type:
    Dissertation
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    : ______________________________________________________________ Chad W. Higgins Irrigated agriculture constitutes the greatest consumptive water use

  • Surface Water and Groundwater Interactions in the Walla Walla River, Northeast Oregon, USA : A Multi-Method Field-Based Approach

    Creator:
    Gryczkowski, Landon
    Abstract:
    Surface water and groundwater interactions are a key component in the functioning of stream ecosystems. Exchange of water between the stream and the hyporheic zone creates habitat for aquatic organisms and serves as a control for stream biogeochemical, thermal, and flow processes. This study takes a multi-method field-based approach to...
    Resource Type:
    Dissertation
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    : John S. Selker Surface water and groundwater interactions are a key component in the

  • Environmental Impacts of Renewable Energy (solar and wind) on Water, Food and Energy Nexus

    Creator:
    Hassanpour Adeh, Elnaz
    Abstract:
    Rapid increasing of renewable energies and the knowledge about their environmental effects are very limited. As a result, the renewable energies (e.g. solar or wind energies) will play a vital role in the future because it is well accepted by environmental friendly industries. This dissertation presents the modeling, data analysis...
    Resource Type:
    Dissertation
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    , micrometeorology and water-use efficiency Elnaz Hassanpour Adeh1, John S. Selker1, Chad W. Higgins1* 1

  • An Experimental Investigation of Interstitial Air Movement in Seasonal Snow

    Creator:
    Drake, Stephen A.
    Abstract:
    Atmospheric pressure changes do not stop at the permeable snow surface but rather propagate into it. These pressure changes range from high-amplitude, low-frequency events caused by seasonal cycles and synoptic weather systems to small-amplitude, high-frequency events caused by topographic features and turbulence. The effect of pressure changes on interstitial air...
    Resource Type:
    Dissertation
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    : ______________________________________________________ Chad W. Higgins Atmospheric pressure changes do not stop at the permeable snow surface

  • Model Predictive Control for Optimum Algal Growth

    Creator:
    Juneja, Ankita
    Abstract:
    Microalgae has been under careful consideration as a sustainable feedstock for renewable fuel recently due to its year round production with high energy yields per unit area, reduced need for arable land, water treatment benefits with nutrient cycling, and minimal competition with the food industry. Despite of all these advantages,...
    Resource Type:
    Dissertation
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    : ______________________________________________________ Ganti S. Murthy Microalgae has been under careful consideration as a sustainable feedstock

  • Leveraging the Food-Energy-Water Nexus for Planet Resilience

    Creator:
    Steadman, Casey L.
    Abstract:
    We have sufficient evidence that our historical management of natural resources is not sustainable. Food production is stagnating or declining. Nonrenewable energy sources on which the energy sector has historically depended are being rapidly depleted. Water resources, for which the energy and food sectors compete, are being depleted and impaired....
    Resource Type:
    Dissertation
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    Chad W. Higgins We have sufficient evidence that our historical management of natural resources

  • Irrigation Innovations to Increase Efficiency and Sustainability

    Creator:
    Al-agele, Hadi A.
    Abstract:
    The first part of the dissertation chronicles irrigation technology changes to progressively improve water application efficiency, water use efficiency, irrigation water productivity and crop production. Technological innovation in irrigation, from 6000 BC to present, has been driven by an unchanging need to provide support for growing populations. The first irrigation...
    Resource Type:
    Dissertation
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    approved: Chad W