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  • Cover crop effects on root rot of sweet corn and soil properties

    Creator:
    Miyazoe, Mikio
    Abstract:
    Root rot of sweet corn in western Oregon and Washington is a significant disease that can reduce yield of intolerant cultivars of processed sweet corn by fifty percent. Root rot is caused by a complex of soilborne organisms, including Drechslera sp., Phoma terrestris, and Pythium arrhenomanes. Processors have adopted tolerant...
    Resource Type:
    Masters Thesis
    Full Text:
    : _______________________________________________________________________ Alexandra G. Stone Root rot of sweet corn in western Oregon and Washington is a

  • Winter Squash: Production and Storage of a Late Winter Local Food

    Creator:
    Wetzel, Jennifer D.
    Abstract:
    Winter squash is an important late winter vegetable crop for local and regional markets; however, farmers in western Oregon report that this crop is marginally profitable due to losses in storage and relatively low yields for the high culinary value kabocha and buttercup types. In order to increase the sales...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: _____________________________________________________________________ Alexandra G. Stone

  • Soil organic matter management and root health

    Creator:
    Darby, Heather
    Abstract:
    Annual applications of fresh or composted dairy manure were assessed for their effects on root rots of sweet corn and snap bean and damping-off of cucumber in a field soil. Soil biological and physical properties were measured as possible indicators of root rot suppressive potential. Regardless of amendment type or...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Heather M. Darby for the

  • Serial manure amendments : effects on soil properties and root rot of sweet corn

    Creator:
    Cox, Bonnie S. Hoffman
    Abstract:
    The effect of serial (multiple-year) organic matter (OM) amendment on soil properties has been described in some cropping systems, although less is known about the effect of serially amended field soils on soil-borne plant diseases. The objectives of this study were to describe the effects of the third and fourth...
    Resource Type:
    Masters Thesis
    Full Text:
    : Effects on Soil Properties and Root Rot of Sweet Corn. Abstract aPP Alexandra G. Stone The effect of

  • Estimating the dry matter production, nitrogen requirements, and yield of organic farm-grown potatoes

    Creator:
    McQueen, John Paul Gainer
    Abstract:
    As part of a participatory research project, where farmers and Oregon State University researchers collaborated, aspects of potato (Solanum tuberosum L.) growing systems were studied. It was determined through conversations with the farmers that quantification of certain growth parameters of potato was lacking, including dry matter accumulation, crop nitrogen (N)...
    Resource Type:
    Masters Thesis
    Full Text:
    -Grown Potatoes. Abstract approved: Dan M. Sullivan As part of a participatory research

  • Investigating climate feedbacks across forcing magnitudes and time scales using the radiative kernel technique

    Creator:
    Jonko, Alexandra
    Abstract:
    Radiative feedbacks associated with changes in water vapor, temperature, surface albedo and clouds remain a major source of uncertainty in our understanding of climate's response to anthropogenic forcing. In this dissertation climate model data is used to investigate variations in feedbacks that result from changing CO₂ forcing and the time...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Alexandra Jonko for the degree of

  • Specific Growth Rings to Which Douglas-fir Needles Are Attached: Site Variability

    Creator:
    Peterson, Alexandra M.
    Abstract:
    Stands of Douglas-fir (Pseudotsuga menziesii ssp. menziesii Mirb. (Franco)) near the Oregon Coast are showing signs of growth reduction from the foliar pathogen Phaeocryptopus gaeumannii that causes Swiss Needle Cast (SNC) disease. To better understand the mechanisms of needle drop through disease, and to learn the degree of variability in...
    Resource Type:
    Honors College Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Alexandra M. Peterson for the degree of Honors Baccalaureate of

  • How Nearshore Currents affect Larval Dispersal and Genetic Connectivity of China Rockfish (Sebastes nebulosus) Along Oregon and Washington Coasts

    Creator:
    Avila, Alexandra M.
    Abstract:
    Connectivity of fish populations is a crucial question for fisheries conservation and the development of spatial management plans. Both adult and larval movement define the extent and direction of ecological and evolutionary overlap between geographic regions and, therefore, how we define stocks for management purposes. Within that context, my work...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Alexandra M. Avila

  • ESPN and the Construction of Gay Identity

    Creator:
    Cook, Alexandra Cleo
    Abstract:
    On February 9th, 2014 Michael Sam stated in an interview with ESPN's "Outside the Lines" that he is gay. Since he was drafted, Sam will become the first ever openly gay player in NFL history. The following study aims to explore ESPN's coverage of Michael Sam, with a goal of...
    Resource Type:
    Masters Thesis
    Full Text:
    AN ABSTRACT OF THE THESIS OF Alexandra Cleo Cook for the degree of Master of Arts in

  • Radar and Optical Remote Sensing of Submesoscale Frontal Features

    Creator:
    Simpson, Alexandra J.
    Abstract:
    The coastal region is home to many types of surface fronts that exist on a submesoscale (1-10 $km$). While in situ observations capture point or transect observations of frontal behavior subsurface, their complex spatial patterns can be well-captured using remote sensing techniques, which provide synoptic views of the ocean surface...
    Resource Type:
    Dissertation
    Full Text:
    AN ABSTRACT OF THE DISSERTATION OF Alexandra J. Simpson