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History and distribution of bee diseases in Oregon

Creator:: Black, A. Burr
Abstract:: This thesis is a discussion of the major bee diseases found in Oregon with notes on minor ailments of bees and on diseases not yet present followed by a history of the introduction and spread of the more important diseases, a history of bee legislation in Oregon and a discussion...
Resource Type:: Masters Thesis
Full Text:: or no importance in Oregon. Septicemia is a blood disease of adult bees caused by bacillus

A contribution to the study of Oregon plants visited by honey bees, with special reference to those utilized as a source of pollen

Creator:: Youse, Howard Ray
Resource Type:: Masters Thesis
Full Text:: ) 75 famillea and 220 genera of higher plants of Oregon are reported as visited by honey bees, This

Effect of livestock grazing on native bees in a Pacific Northwest bunchgrass prairie

Creator:: Kimoto, Chiho
Abstract:: Native bees play an important role as pollinators of natural vegetation and agricultural crops. Yet many pollinators, including some native bees, are declining in numbers. Some of the potential causes of these declines are habitat destruction and degradation by various human land uses, including urban development and sprawl, construction of...
Resource Type:: Masters Thesis
Full Text:: on December 3, 2010. Title: Effect of Livestock Grazing on Native Bees in a Pacific Northwest

Native bee diversity and floral resource availability in two Willamette Valley Oregon ecosystems

Creator:: Bergh, Jennifer E.
Abstract:: The importance of pollinators in native and managed landscapes is well known, and recent interest is directed towards investigating the role of native bees as providers of pollination ecosystem services. Uncertainty about bee populations at global and local scales has prompted research and general interest in conservation of bee diversity....
Resource Type:: Masters Thesis
Full Text:: : Native Bee Diversity and Floral Resource Availability in Two Willamette Valley Oregon Ecosystems

Bees Associated with Linden (Tilia spp.) Trees and their Susceptibility to Toxic Sugars in Nectar

Creator:: Argoti, Adriana G.
Abstract:: Bees provide critical pollination services to diverse agricultural crops, native plants and trees. Globally, there are reports of bee declines which have been attributed to diseases, exposure to pesticides and changes in land use that are believed to have led to a reduction in foraging resources and nesting habitats for...
Resource Type:: Masters Thesis
Full Text:: . Occasionally dead bumble bees have been observed under linden trees in western Oregon in the west

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:: Blight: A New Disease in the Pacific Northwest Abstract approved: Cynthia M. Ocamb A necrosis at the

Insect pests affecting clover in Oregon

Creator:: Anderson, Ernest Clifford
Resource Type:: Masters Thesis
Full Text:: disease caused by Scierotinia trifoliorum, sometimes quite prevelant in Oregon, may easily be mis

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:: The primary cause of "early dying" disease of potatoes in Oregon is Verticillium dahliae; however

Viral causes of pneumoenteritis in lambs in western Oregon

Creator:: Ullrich, Nancy Ann
Abstract:: One hundred and fourty-one lambs showing signs of pneumonia and/or enteritis from four different flocks in western Oregon were sampled for virus isolation. Two ovine adenoviruses, antigenically distinct from each other and from bovine adenoviruses, were isolated from the nasal mucosa and feces of two lambs. The lambs were showing...
Resource Type:: Masters Thesis
Full Text:: Oregon AN ABSTRACT OF THE THESIS OF Nancy Ann Ullrich for the degree of Master of Science in

ScholarsArchive@OSU

History and distribution of bee diseases in Oregon

A contribution to the study of Oregon plants visited by honey bees, with special reference to those utilized as a source of pollen

Effect of livestock grazing on native bees in a Pacific Northwest bunchgrass prairie

Native bee diversity and floral resource availability in two Willamette Valley Oregon ecosystems

Bees Associated with Linden (Tilia spp.) Trees and their Susceptibility to Toxic Sugars in Nectar

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

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

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

Viral causes of pneumoenteritis in lambs in western Oregon

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