Index Catalog // ScholarsArchive@OSU

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:: parts associated with the soil. However, plant pathogenic species of Fusarium can also affect aerial

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Creator:: Miller, Nathan L. (Nathan Louis)
Abstract:: Sweet corn (Zea mays L.) yields in the Willamette Valley of Oregon have been declining since the early 1990’s. Studies were done to determine if there is a relationship between ear weight and several disease parameters including necrotic crowns or stalk nodes, nodal root rot, radicle root rot, and sub-crown...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Nathan L. Miller for the degree of Doctor of Philosophy in Botany and Plant Pathology

Presence and pathogenicity of Fusarium and Verticillium species in commercial red radish (Raphanus sativus) seed production in the Willamette Valley of Oregon

Creator:: Bomberger, Rachel A.
Abstract:: Commercial radish seed producers in the Willamette Valley of Oregon have observed a late season wilt in their seed fields. Twenty-two fields were surveyed for wilt in the Willamette Valley during June through August 2012 and 2013. Plants exhibiting wilt symptoms were collected from the fields and examined for vascular...
Resource Type:: Masters Thesis
Full Text:: inhibitors of Fusarium oxysporum. Plant Disease 87:407-412. 61. Subbarao, K. V., Chassot, A., Gordon, T

Pathogenic characteristics of Fusarium solani isolated from inland Pacific Northwest forest nurseries

Creator:: James, Robert L., Perez, R., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: Forty-seven isolates of Fusarium solani obtained from the roots of diseased and healthy conifer seedlings and forest nursery soil were tested for pathogenicity on young Douglas-fir germinants under controlled laboratory conditions. Isolate virulence varied widely; a few were highly virulent whereas many were classified as non-pathogenic. Isolates from the roots...
Resource Type:: Technical Report
Full Text:: . Species of Fusarium associated with root rots of the Gramineae in the northern Great Plains. Plant Disease

Association of Fusarium with nondiseased containerized ponderosa pine seedlings at the USDA Forest Service Nursery, Coeur D'Alene, Idaho

Creator:: James, Robert L., Gilligan, Carma J., United States. Forest Pest Management, and United States. Forest Service. Northern Region
Abstract:: A total of 45 nondiseased containerized ponderosa pine seedlings from 10 seedlots were sampled at three different times during the growing season for root infection by Fusarium and Trichoderma at the USDA Forest Service Nursery in Coeur d'Alene, Idaho. More than 90 percent of the seedlings had roots infected with...
Resource Type:: Technical Report
Full Text:: quantitative isolation of Fusarium oxysporum from natural soil. Rev. Plant Prot. Res. 8:114-125. Nelson, P. E

Pathogenic characteristics of Fusarium acuminatum isolated from inland Pacific Northwest nurseries

Creator:: James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: Thirty-three isolates of Fusarium acuminatum obtained from inland Pacific Northwest forest nurseries were tested for their pathogenicity on young Douglas-fir germinants under controlled laboratory conditions. Tested isolates were from forest nursery soil, roots of healthy-appearing and diseased conifer seedlings, Styrofoam and hard plastic containers, conifer seeds, 411 and adult fungus...
Resource Type:: Technical Report
Full Text:: roots with single macroconidia of Fusarium acuminatum. Plant Disease 71:130-131. Hill, J.P. and D. L

Effects of preplant soil treatments on Fusarium and Trichoderma populations and fungal root colonization of 2-0 nondiseased western white pine seedlings - USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L., United States. Forest Health Protection, and United States. Forest Service. Northern Region
Abstract:: Preplant soil treatments were implemented to determine effects on populations of potentiallypathogenic Fusarium and potentially disease-suppressive Trichoderma spp. as well as root colonization by these and other selected fungi on healthy-appearing, bare root 2-0 western white pine seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. Soil treatments included...
Resource Type:: Technical Report
Full Text:: populations of potentially- pathogenic Fusarium and potentially disease-suppressive Trichoderma spp. as well

Occurrence of Fusarium on leach pine cells from the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L., Gilligan, Carma J., and United States. Forest Service. Northern Region
Abstract:: Three hundred fifty Leach pine cells used to grow containerized conifer seedlings at the USDA Forest Service Nursery in Coeur d'Alene, Idaho, were sampled for Fusarium and Trichoderma colonization. Cells were either sampled prior to or after cleaning. Cleaning reduced Fusarium colonization from 86 percent of the cells to about...
Resource Type:: Technical Report
Full Text:: from pine cells to cause disease. Table 6.—Occurrence of Fusarium spp. on Leach® pine cells from the

Examinations of Fusarium sambucinum on Humulus lupulus and co-infection with hop stunt viroid in commercial hop fields

Creator:: Cerruti, Natasha R.
Abstract:: After an unusually high incidence of Fusarium canker was observed in commercial hop fields of the Pacific Northwest, field surveys were conducted and revealed that canker incidence ranged from 20 to 60% of bines sampled in six commercial fields, as well as wide-spread Hop stunt viroid infection in these six...
Resource Type:: Masters Thesis
Full Text:: Master of Science in Botany and Plant Pathology, presented on June 11, 2010. Title: Examinations of

Epidemiology of Fusarium on containerized Douglas-fir seedlings. I, Seed and seedling infection, symptom production, and disease progression

Creator:: James, Robert L., United States. Forest Service. Northern Region, and United States. Forest Pest Management
Abstract:: Investigations were conducted to understand the epidemiology of Fusarium on containerized Douglas-fir seedlings. Types and importance of Fusarium inoculum sources, relationships between seedling infection and symptom production, amounts and types of diseases that occurred throughout typical growth cycles, and the importance of secondary pathogen spread were investigated. Levels of Fusarium...
Resource Type:: Technical Report
Full Text:: roots without causing disease symptoms. Investigations failed to show spread of Fusarium • disease from

ScholarsArchive@OSU

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

Responses and relationships among Fusarium species, sweet corn, and western spotted cucumber beetles

Presence and pathogenicity of Fusarium and Verticillium species in commercial red radish (Raphanus sativus) seed production in the Willamette Valley of Oregon

Pathogenic characteristics of Fusarium solani isolated from inland Pacific Northwest forest nurseries

Association of Fusarium with nondiseased containerized ponderosa pine seedlings at the USDA Forest Service Nursery, Coeur D'Alene, Idaho

Pathogenic characteristics of Fusarium acuminatum isolated from inland Pacific Northwest nurseries

Effects of preplant soil treatments on Fusarium and Trichoderma populations and fungal root colonization of 2-0 nondiseased western white pine seedlings - USDA Forest Service Nursery, Coeur d'Alene, Idaho

Occurrence of Fusarium on leach pine cells from the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Examinations of Fusarium sambucinum on Humulus lupulus and co-infection with hop stunt viroid in commercial hop fields

Epidemiology of Fusarium on containerized Douglas-fir seedlings. I, Seed and seedling infection, symptom production, and disease progression

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