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Incidence of root pathogens on Douglas-fir within the Reuben's Reserve, Nez Perce Indian Reservation, Idaho

Creator:: James, Robert L. and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: Root diseases were evaluated on the Reuben's Reserve, Nez Perce Indian Reservation, Idaho. Nineteen trees adjacent to two suspected root disease centers were pushed with a D-6 tractor to expose their root systems. Extent of root necrosis and decay was determined and related to level of crown thinning, chlorosis, and...
Resource Type:: Technical Report
Full Text:: . Insects likely attack trees sufficiently weakened by root disease. Fungi causing blue and black staining

Conifer root diseases on the Kootenai National Forest, Montana

Creator:: James, Robert L., Stewart, C. A., and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: A survey for incidence and distribution of root diseases was conducted on the Kootenai National Forest using timber inventory subcompartments as primary sample units. Root diseases were located within 23 of 75 sampled subcompartments. At least 1.1 percent of the commercial forest lands within the Forest are infested with root...
Resource Type:: Technical Report
Full Text:: . Ser. Pest Leaflet 67. 4 pp. James, R. L. and C. A. Stewart. 1981. Root disease survey on the Nezperce

Evaluation of root diseases of containerized conifer seedlings at the Champion Timberlands Nursery, Plains, Montana

Creator:: James, Robert L., Gilligan, Carma J., Reedy, V., and United States. Forest Service. Northern Region
Abstract:: Investigations of containerized conifer seedling root diseases at the Champion Timberlands Nursery revealed that Fusarium oxysporum was most commonly isolated from seed, seedling roots, and styroblock containers. Amount of seed infection varied widely among the seedlots tested, but was usually below 5 percent. Runningwater rinses did not reduce amounts of...
Resource Type:: Technical Report
Full Text:: . Five seedlings of each species displayed typical root disease symptoms including foliar chlorosis and

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:: . Trees outside the disease control strips were examined for symptoms of decline and signs of root disease

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 R. L. James. 1981. Evaluation of root disease control in the Saint Mary's logging unit, Flathead

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

Evaluation of root diseases on the Ducharme logging unit, Flathead Indian Reservation

Creator:: James, Robert L., Byler, James W., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A root disease evaluation was completed for the Ducharme logging unit near the southeast corner of Flathead Lake. Extensive root disease was found on Douglas-fir throughout the unit. The major pathogen on the site was Armillaria meilea. Black stain (Verticicladiella sp.) was isolated from one tree which was also infected...
Resource Type:: Technical Report
Full Text:: and J. W. Byler, Supervisory Plant Pathologist • • ABSTRACT A root disease evaluation was

Root diseases of western white pine transplants at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Creator:: James, Robert L., Gilligan, Carma J., and United States. Forest Service. Northern Region
Abstract:: Mortality of western white pine transplants used to assess resistance to blister rust at the USDA Forest Service Nursery in Coeur d'Alene, Idaho was likely due to extensive root infection by Pythiva app. Severity of foliar symptom production was significantly correlated with extent of root system colonization by these fungi....
Resource Type:: Technical Report
Full Text:: isolated from diseased transplants, its variable distribution in the soil and poor correlation with disease

Resistance of Botrytis cinerea to vinclozolin, iprodione and dicloran

Creator:: James, Robert L., Gilligan, Carma J., and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: Isolates of Botrytis cinerea from containerized conifer seedlings from two nurseries in the Northern Rocky Mountains were exposed to the dicarboximide fungicides vinclozolin and iprodione and the chlorinated nitroaniline fungicide dicloran to evaluate occurrence and characteristics of resistant strains. The isolates were grown on test media prepared by incorporating the...
Resource Type:: Technical Report
Full Text:: . Disease control. In Coley-Smith, J. R., K. Verhoeff, and W. R. Jarvis (eds.). The biology of Botrytis

Fungicide tests to control Botrytis blight of containerized western larch at the Champion Timberlands Nursery, Plains, Montana

Creator:: James, Robert L., Genz, Daryl, and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Abstract:: Five fungicides were evaluated to control Botrytis blight of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, MT. Fungicides were applied at biweekly intervals before and after seedling inoculation with Botrytis. Vinclozolin (Ornalin®) caused severe phytotoxicity to seedlings, resulting in enhanced mortality and premature needle loss. Captan and...
Resource Type:: Technical Report
Full Text:: plants, and limiting irrigation are usually necessary to control this disease (Cooley 1981). However

ScholarsArchive@OSU

Incidence of root pathogens on Douglas-fir within the Reuben's Reserve, Nez Perce Indian Reservation, Idaho

Conifer root diseases on the Kootenai National Forest, Montana

Evaluation of root diseases of containerized conifer seedlings at the Champion Timberlands Nursery, Plains, 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

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

Evaluation of root diseases on the Ducharme logging unit, Flathead Indian Reservation

Root diseases of western white pine transplants at the USDA Forest Service Nursery, Coeur d'Alene, Idaho

Resistance of Botrytis cinerea to vinclozolin, iprodione and dicloran

Fungicide tests to control Botrytis blight of containerized western larch at the Champion Timberlands Nursery, Plains, Montana

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