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Diagnosis and Etiology of a Soilborne Disease Complex of Winter Squash (Cucurbita maxima) in the Willamette Valley, OR

Creator:

Rivedal, Hannah M.

Abstract:

Winter squash (Cucurbita maxima) grown in Oregon’s Willamette Valley for edible seed, frozen foods, and fresh markets is susceptible to an undiagnosed soilborne disease. Diseased squash fields exhibit symptoms of stunting, root and crown rot, vascular discoloration, and late-season wilt, which in extreme cases can lead to total crop failure....

Resource Type:

Dissertation

Full Text:

committee members, Alex Stone, Jerry Weiland, Inga Zasada, and Ed Peachey. I have been sincerely grateful
Distribution of Phytophthora rubi and Pratylenchus penetrans in Pacific Northwest Red Raspberry (Rubus idaeus) Fields

Creator:

Kroese, Duncan R.

Abstract:

The Pacific Northwest produces over 95% of the nation’s processed red raspberries, valued at over $65 million. Two of the major soilborne pathogens effecting the production of raspberry in this region are the oomycete Phytophthora rubi, which causes root rot in red raspberry plants, and the plant-parasitic nematode Pratylenchus penetrans,...

Resource Type:

Masters Thesis

Full Text:

. Jerry Weiland who has provided significant help and support over the course of my studies. I consider
Cultural controls for suppressing Phytophthora cinnamomi root rot of blueberry

Creator:

Yeo, John R.

Abstract:

Phytophthora cinnamomi is a soilborne pathogen that causes root rot disease of highbush blueberry (Vaccinium corymbosum L.). When new installations of susceptible blueberry cultivars are infected with P. cinnamomi, plants often fail to grow significant new tissue, greatly reducing yields over the life of the planting. Chemical fungicides are available...

Resource Type:

Dissertation

Full Text:

AUTHORS Dr. Jerry Weiland assisted with the experimental design, statistical interpretation, and