Index Catalog // ScholarsArchive@OSU

Determination of α-Amylase activity and soluble starch content in normal and cork spotted D̀'Anjou' pear fruit

Creator:: Li, Shiao Jing
Abstract:: There was a linear relationship of [alpha]-amylase activity from 2 to 12 hours incubation in both freeze-dried and fresh 'd'Anjou' pear fruit tissue. Activity was greater, however, in fresh as compared with freeze-dried tissues. [alpha]-Amylase activity from both types of samples was not detected until 60 minutes incubation. After 90...
Resource Type:: Masters Thesis
Full Text:: Activity and Soluble Starch Content in Normal and Cork Spotted ^D'Aniou' Pear Fruit Abstract approved

Histological study of pear bark in relation to blight resistance

Creator:: McCormick, Andrew Cameron
Resource Type:: Masters Thesis
Full Text:: attention in this connection, and not only has the disease in question been studied, but its relation to

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

Creator:: Temple, Todd N.
Abstract:: Competitive exclusion has been the mechanism hypothesized to account for the biological control of fire blight disease of pear and apple by the bacterium Pseudomonas fluorescens A506 (A506). Recent laboratory assays demonstrated, however, that A506 produces an antibiotic that is toxic to the fire blight pathogen, Erwinia amylovora, when cultured...
Resource Type:: Masters Thesis
Full Text:: of fire blight disease of pear and apple by the bacterium Pseudomonas fluorescens A506 (A506

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

Natural spread of and competition between two bacterial antagonists of the fire blight pathogen, Erwinia amylovora, on blossoms of Bartlett pear

Creator:: Nuclo, Raymond L.
Resource Type:: Masters Thesis

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

Determination of α-Amylase activity and soluble starch content in normal and cork spotted D̀'Anjou' pear fruit

Histological study of pear bark in relation to blight resistance

Effect of iron on biological control of fire blight by Pseudomonas fluorescens A506

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

Natural spread of and competition between two bacterial antagonists of the fire blight pathogen, Erwinia amylovora, on blossoms of Bartlett pear

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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