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Filtering by: Subject Pear -- Diseases and pests -- Control -- Oregon -- Willamette River Valley Remove constraint Subject: Pear -- Diseases and pests -- Control -- Oregon -- Willamette River Valley Degree Field Horticulture Remove constraint Degree Field: Horticulture

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  • Habitat management for beneficial insects on Willamette Valley vegetable and berry farms

    Creator:
    Russell, Michael C.
    Abstract:
    Conservation biological control involves manipulating farm landscapes or management systems to enhance populations of beneficial predators of agricultural pests. Farmscaping is one aspect of conservation biological control where predators of important pests are identified, the availability on the farm landscape of resources and habitat components needed by the beneficials to...
    Resource Type:
    Dissertation
    Full Text:
    evaluate the plant species found on Willamette valley cane berry farms and calculate the total floral

  • New sources and linked AFLP markers for Eastern filbert blight resistance in hazelnut

    Creator:
    Chen, Honglin
    Abstract:
    Eastern filbert blight (EFB), caused by Anisogramma anomala (Peck) E. Miiller, is a devastating disease to orchards of the European hazelnut (Corylus avellana L.) in the Willamette Valley, Oregon. Host resistance is the most desirable means of disease control. Fifty-eight hazelnut accessions, including European cultivars and interspecific hybrids were evaluated...
    Resource Type:
    Masters Thesis
    Full Text:
    to orchards of the European hazelnut (Corylus avellana L.) in the Willamette Valley, Oregon. Host

  • 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:
    cover crops in the Willamette Valley (Putnam, Oregon state Univ. disease clinic). BYDV is also an