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Creator:: Shaner, Gregory Ellis
Resource Type:: Dissertation
Full Text:: of Stripe Rust (Puccinia striiformis West.) of Wheat in Oregon by Gregory Ellis Shaner A THESIS

Creator:: Clark, Deborah Ann, 1954-
Abstract:: Field microplot studies conducted over two seasons (1982-1984) evaluated the influence of four physically and chemically diverse soils collected from Pacific Northwest wheat fields on the incidence of dwarf bunt of winter wheat caused by Tilletia controversa Kuhn. These soils were placed at Flora and Pendleton, Oregon to determine the...
Resource Type:: Masters Thesis
Full Text:: a significant (P < 0.001) affect on the amount of dwarf bunt which developed in these test soils

Creator:: Young, Stanford Adams
Resource Type:: Dissertation
Full Text:: secondary spread (Gregory, 1973) and thus a measure of the rate of disease spread. Relating Disease

Creator:: Byther, Ralph S.
Abstract:: Abundant conidial production occurs from colonized straws and plants infected with Cercosporella herpotrichoides Fron during the cool moist months of the growing season. Experiments were designed to study the survival, inoculum potential and competitive saprophytic ability of conidia in soil. Laboratory results indicated that cool moist soil favors the saprophytic...
Resource Type:: Dissertation
Full Text:: in soil. A marked reduction in survival of C. herpotrichoides after one year occurred in

Creator:: Halsey, Mark Evan
Resource Type:: Dissertation
Full Text:: isolated from roots growing in a take-all suppressive soil, where NH4+-N and Cl- had been banded with the

Creator:: Maas, J. L.
Abstract:: Abundant conidial and sclerotial production occurs on iris plants infected with Botrytis convoluta Whetzel and Drayton during the cool moist months of the year. Experiments were designed to study the survival and inoculum potential of conidia and sclerotia. Basic nutritional requirements of the fungus in culture were also studied. Results...
Resource Type:: Dissertation
Full Text:: and laboratory studies indicated a large per- centage of iris plants apparently free of B. convoluta

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