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Filtering by: Creator Jackson, Patrick A. Remove constraint Creator: Jackson, Patrick A. Committee Member Hayes, Patrick Remove constraint Committee Member: Hayes, Patrick Degree Field Crop and Soil Science Remove constraint Degree Field: Crop and Soil Science

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  • Investigation of hop downy mildew through association mapping and observations of the oospore

    Creator:
    Parker, Thomas B.
    Abstract:
    Hop downy mildew is a devastating disease affecting hop requiring expensive fungicide applications throughout the growing season. Plant resistance is highly desirable and theorized as being decidedly quantitative with dominance and epistasis involved in resistance. An association mapping approach using a mixed-model was used to identify AFLP markers associated with...
    Resource Type:
    Dissertation
    Full Text:
    . I would like to thank Dr. John A. Henning, Dr. Peter Szűcs, Dr. Patrick M. Hayes and Dr. Walter F

  • Water relations in red and white clover seed crops

    Creator:
    Oliva, Ruben N.
    Abstract:
    Both red (Trifolium pratense L.) and white (Trifolium repens L.) clover seed yields can be highly variable and low in western Oregon. The objectives of this study were to: i) determine crop water requirements and supplemental irrigation timing, and ii) quantify the effects of soil and water status on inflorescence...
    Resource Type:
    Dissertation
    Full Text:
    were applied in 1990 and 1991 to first and second year seed crops grown on a Woodburn silt loam (fine