Index Catalog // ScholarsArchive@OSU

Development of vesicular-arbuscular mycorrhizae and pink root (Pyrenochaeta terrestris) in commercial onion fields in relation to nutrition, pH, and soil fumigation

Creator:: McGraw, Anne-Cressey
Resource Type:: Masters Thesis
Full Text:: roots from commercial onion fields in E. Oregon and S. W. Idaho. Pink root is an important disease in

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

Creator:: Flota, James Ernest
Resource Type:: Masters Thesis
Full Text:: eastern Oregon, Idaho, and in most other onion growing areas of the U. S. With suc- cessive onion

The comparative value of formaldehyde and of various chemical dusts for the control of onion smut

Creator:: Bedwell, Jesse Leonard
Resource Type:: Masters Thesis
Full Text:: chemical dusts for the control of onion smut THESIS THE COMPARATIVE VALUE OF FORMALDEHYDE AND OF

Factors influencing the development of onion pink root disease incited by Pyrenochaeta terrestris (Hansen) Gorenz, Walker, Larson

Creator:: Pack, Paul Eugene
Abstract:: A study was conducted of the influence of various climatic and soil factors on the development of onion pink root disease and of the influences of temperature, light, pH, carbon and nitrogen sources, and vitamins on the growth in vitro of an Oregon isolate of the pink root fungus, Pyrenochaeta...
Resource Type:: Masters Thesis
Full Text:: development of onion pink root disease and of the influences of temperature, light, pH, carbon and nitrogen

Insect pests affecting clover in Oregon

Creator:: Anderson, Ernest Clifford
Resource Type:: Masters Thesis
Full Text:: primary impor- tance in soi]. fertility and seed production. Although the Oregon farmers use clover

The roles of Verticillium dahliae, Colletotrichum atramentarium, Erwinia carotovora subsp. carotovora and E. carotovora subsp. atroseptica in "early dying" disease of potatoes

Creator:: Kirkland, Marjorie Lynn
Abstract:: The primary cause of "early dying" disease of potatoes in Oregon is Verticillium dahliae; however, Colletotrichum atramentarium, Erwinia carotovora subsp. carotovora (Ecc) and E. carotovora subsp. atroseptica (Eca) are also commonly isolated from diseased plants. Therefore, field and greenhouse studies were initiated to determine the relative involvement of each pathogen,...
Resource Type:: Masters Thesis
Full Text:: Basin of Oregon that exhibited typical "early dying" disease symptoms in 1981. 10 Foliar chlorosis and

Epidemiology of grape powdery mildew, Uncinula necator, in the Willamette Valley

Creator:: Hall, Tyrone W.
Abstract:: An important disease of Vitis vinifera production in Oregon and all other commercial growing regions is powdery mildew of grape, caused by the obligate fungal pathogen Uncinula necator (Schwein.) Burril. Grape production can be characterized as a long-term investment in the establishment and maintenance of the vineyard. Establishment times have...
Resource Type:: Masters Thesis
Full Text:: . Mahaffee An important disease of Vitis vinifera production in Oregon and all other commercial growing

Hop cone tip blight : a new disease in the Pacific Northwest

Creator:: Bienapfl, John C.
Abstract:: A necrosis at the tip of cones was observed on hop (Humulus lupulus), cultivar "Nugget", grown in Oregon in the early 1990's. Fusarium sambucinum and F. avenaceum were recovered from symptomatic cones in 1998 and preliminary inoculation experiments suggested both Fusarium species could cause hop cone necrosis. Studies were carried...
Resource Type:: Masters Thesis
Full Text:: assistance with setting up, maintaining, and taking down the hop fields. I am grateful to the Oregon Hop

An investigation of cherry gummosis

Creator:: Griffin, F. L. (Frederick Llewellyn)
Resource Type:: Masters Thesis
Full Text:: . Culture and Economic Importance. 5. Diseases. C. THE DISEASE. 1. Gummosis 2. History and Distribution

Oviposition behavior and thermal constants for egg development of the filbertworm Cydia latiferreana (Lepidoptera: Tortricidae)

Creator:: Kelly, Alice M.
Abstract:: Cydia latiferreana Wlshm. is recognized as the key insect pest of cultivated filbert (hazelnut) in Oregon. The purpose of this study was to obtain information on mating and oviposition behavior of the adult insect, to calculate the lower temperature threshold and degree-days required for egg development, and to develop an...
Resource Type:: Masters Thesis
Full Text:: . is recognized as the key insect pest of cultivated filbert (hazelnut) in Oregon. The purpose of

ScholarsArchive@OSU

Development of vesicular-arbuscular mycorrhizae and pink root (Pyrenochaeta terrestris) in commercial onion fields in relation to nutrition, pH, and soil fumigation

The identification and quantification of Pyrenochaeta terrestris (Hansen) Gorenz, Walker, and Larson, propagules in soil and onion roots

The comparative value of formaldehyde and of various chemical dusts for the control of onion smut

Factors influencing the development of onion pink root disease incited by Pyrenochaeta terrestris (Hansen) Gorenz, Walker, Larson

Insect pests affecting clover in Oregon

The roles of Verticillium dahliae, Colletotrichum atramentarium, Erwinia carotovora subsp. carotovora and E. carotovora subsp. atroseptica in "early dying" disease of potatoes

Epidemiology of grape powdery mildew, Uncinula necator, in the Willamette Valley

Hop cone tip blight : a new disease in the Pacific Northwest

An investigation of cherry gummosis

Oviposition behavior and thermal constants for egg development of the filbertworm Cydia latiferreana (Lepidoptera: Tortricidae)

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