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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:: • • . PRONG BINDER Forest Pest Management SD/4- • A-3 ft.8743

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

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:: PRONG BINDER • Forest Pest Management J. Y. Woo Research Plant

Mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Causes of mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana, were investigated. Seedlings were rated for disease severity based on extent of foliar decline symptoms and fungal isolations made from their roots. Isolations were also made from selected larch seed. Consistent associations between root colonization...
Resource Type:: Technical Report
Full Text:: & 10 Pest Management. 11 United States Forest Northern Department of Service Region

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:: . United States Forest Northern Department of Service Region • Agriculture P.O. Box 7669 Missoula

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:: . (Graham and Linderman 1983; James 1984a). • United States Forest Northern P.O. Box 7669 Department 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:: 59807 Forest Pest Management 72a-Trw,A4 Mg STUDIES OF FUSARIUM ASSOCIATED WITH CONTAINERIZED

Evaluation of root disease control in the Saint Mary's logging unit, Flathead Reservation, Montana

Creator:: Byler, James W., James, Robert L., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Two methods attempting to stop marginal spread of a root disease center in Douglas-fir were evaluated within the Flathead Indian Reservation, Montana. The first method was to cut all living trees within a 1-chain strip outside the edge of the infestation. The second method was to uproot all trees for...
Resource Type:: Technical Report
Full Text:: . . • United States Forest Northern State & • Department of Service Region Private Agriculture Forestry

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:: and Disease Information System (FIDIS) and to contribute to forest management planning. This report

Meria needlecast of western larch seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region
Abstract:: Needlecast caused by Meria laricis caused serious losses of 2-0 bareroot western larch during 1983 at the USDA Forest Service Nursery, Coeur d'Alene, Idaho. Cool, wet weather throughout the spring and summer of 1983 was ideal for disease buildup and spread. Control attempts with fungicides were largely unsuccessful because of...
Resource Type:: Technical Report
Full Text:: revealed presence of sporulating structures protruding through stomata on the underside of needles. United

ScholarsArchive@OSU

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

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

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

Mortality of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, Montana

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

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

Evaluation of root disease control in the Saint Mary's logging unit, Flathead Reservation, Montana

Root disease survey on the Nezperce National Forest, Idaho

Meria needlecast of western larch seedlings at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

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