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Studies of Fusarium associated with containerized conifer seedling diseases, 2. Diseases of western larch, Douglas-fir, grand fir, subalpine fir, and ponderosa pine seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Containerized western larch, Douglas-fir, grand fir, subalpine fir, and ponderosa pine seedlings which displayed disease symptoms were sampled for presence of Fusarium spp. Seedlings from 33 seedlots within the Northern Region were sampled. Major types of diseases included post-emergence damping-off, root disease (late damping-off), and cotyledon blight. Fusarium oxysporum was...
Resource Type:: Technical Report
Full Text:: 1985 STUDIES OF FUSARIUM ASSOCIATED WITH CONTAINERIZED CONIFER SEEDLING DISEASES: (2). DISEASES OF

Studies of Fusarium associated with containerized conifer seedling diseases : pathogenicity tests of isolates from the Alpine Nursery, Kalispell, Montana

Creator:: James, Robert L., Gilligan, Carma J., and United States. Forest Service. Northern Region
Abstract:: Isolates of Fusarium oxysporum, F. acuminatum, and F. sambucinum obtained from peat-vermiculite soil mixes were tested for pathogenicity on ponderosa pine, lodgepole pine, western larch, and blue spruce containerized seedlings and on germination of Scots pine and blue spruce seed. Ponderosa pine seedling were the least susceptible to killing by...
Resource Type:: Technical Report
Full Text:: CONIFER SEEDLING DISEASES: • yu.gli-/y PATHOGENICITY TESTS OF ISOLATES FROM THE ALPINE NURSERY,KALISPELL

Root disease of containerized conifer seedlings, Western Forest Systems Nursery, Lewiston, Idaho

Creator:: James, Robert L., United States. Forest Service. Northern Region, and United States. Forest Pest Management
Abstract:: Investigations of containerized western white pine, western larch, and Douglas-fir seedlings at the Western Forest Systems Nursery in Lewiston, Idaho, revealed that many seedlings were colonized with Fusarium oxysporum although they lacked severe disease symptoms. White pine seedlings were also infected with Pythium spp., probably as a result of sowing...
Resource Type:: Technical Report
Full Text:: Forest Pest SD) LI- M • A- 3 Ina. gg -3 ROOT DISEASE OF

Pathogenicity of Alternaria alternata on young Douglas-fir and Engelmann spruce germlings

Creator:: James, Robert L., Woo, John You, and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: Region, Cooperative Forestry and Pest Management, Missoula, MT. 2/ Retired, USDA Forest Service

Pathogenicity of Fusarium from forest seedling nurseries on Douglas-fir and ponderosa pine seedlings

Creator:: James, Robert L. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Eighteen isolates of Fusarium comprising four species (F. oxysporum, E. avenaceum, E. acuminatum, and F. sambucinum) isolated from diseased conifer seedlings from nurseries were tested for pathogenicity on Douglas-fir germlings. Three of the most pathogenic F. oxysporum isolates on Douglas-fir germlings were also tested on ponderosa pine germlings and older...
Resource Type:: Technical Report
Full Text:: and Pest Management E. P. Militante, Graduate Research Assistant, University of Idaho J. Y. Woo

Root disease survey on the Nezperce National Forest, Idaho

Creator:: James, Robert L., Stewart, C. A., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An impact survey to determine extent and distribution of root disease centers was completed for the Nezperce National Forest, Idaho, in 1980. Lowlevel color infrared photography was used to delineate root disease centers within National Forest inventory subcompartments. Suspected root disease centers were ground checked to determine associated fungi and...
Resource Type:: Technical Report
Full Text:: disease in bark beetle-infested eastern Oregon and Washington true firs. Plant Dis. Rept. 63:262-266. 11

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:: . 1. SEED AND SEEDLING INFECTION, SYMPTOM PRODUCTION, AND DISEASE PROGRESSION • by R. L. James

Occurrence of Fusarium on Douglas-fir seed and containerized seedlings at the Plum Creek Nursery, Pablo, Montana

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Investigations were conducted to determine importance of Fusarium as a pathogen on Douglas-fir seed and containerized seedlings at the Plum Creek Nursery during 1985. Fusarium oxvsnorum was occasionally isolated from necrotic lesions on young germinants that lacked foliar symptoms. Low levels of F. oxvsnorum were detected on three of four...
Resource Type:: Technical Report
Full Text:: , R. L. and C. J. Gilligan. 1984. Studies of Fusarium associated with containerized conifer seedling

Containerized western larch seedling mortality, USDA Forest Service Nursery, Coeur D'Alene, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: severity of disease within several seedlots and the potential for greater losses in the • future

An evaluation of fungicides to control Diplodia tip blight at the Fantasy Farms Nursery, Peck, Idaho

Creator:: James, Robert L., Schwandt, John W., Woo, John You, and United States. Forest Service. Northern Region
Abstract:: Benomyl and chlorothalonil were tested on 2-0 bareroot ponderosa pine seedlings as a means to reduce impact of Diplodia tip blight at the Fantasy Farms Nursery, Peck, Idaho. Infection levels were not adequate to assess effectiveness of the fungicides. However, techniques were developed which can be used to assess efficacy...
Resource Type:: Technical Report
Full Text:: Pathologist Cooperative Forestry and Pest Management USDA Forest Service, Northern Region Missoula, Montana

ScholarsArchive@OSU

Studies of Fusarium associated with containerized conifer seedling diseases, 2. Diseases of western larch, Douglas-fir, grand fir, subalpine fir, and ponderosa pine seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Studies of Fusarium associated with containerized conifer seedling diseases : pathogenicity tests of isolates from the Alpine Nursery, Kalispell, Montana

Root disease of containerized conifer seedlings, Western Forest Systems Nursery, Lewiston, Idaho

Pathogenicity of Alternaria alternata on young Douglas-fir and Engelmann spruce germlings

Pathogenicity of Fusarium from forest seedling nurseries on Douglas-fir and ponderosa pine seedlings

Root disease survey on the Nezperce National Forest, Idaho

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

Occurrence of Fusarium on Douglas-fir seed and containerized seedlings at the Plum Creek Nursery, Pablo, Montana

Containerized western larch seedling mortality, USDA Forest Service Nursery, Coeur D'Alene, Idaho

An evaluation of fungicides to control Diplodia tip blight at the Fantasy Farms Nursery, Peck, Idaho

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