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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

Creator:: Gibson, Kenneth E., Oakes, Robert D., and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: Lolo National Forests (NF), the Northern Cheyenne Indian Reservation (IR), and adjacent State and

Creator:: Dooling, Oscar J., Johnson, Ralph R., Eder, Robert G., and United States. Forest Service. Northern Region
Abstract:: A permanent study was established in 1970 and 1971 to measure the impact, spread, and intensification of dwarf mistletoe on precommercially thinned Douglas-fir and lodgepole pine in Montana. Mean diameter growth on all plots was reduced 21 percent in Douglas-fir, but the reduction is only significant at the 0.15 level....
Resource Type:: Technical Report
Full Text:: impact may increase as the stands mature. 1 Plant Pathologist, Cooperative Forestry and Pest Management

Creator:: Dooling, Oscar J., Gibson, Kenneth E., and United States. Forest Service. Northern Region
Abstract:: Potential problem pests found were Armillaria root disease, pocket gopher, western pine shoot borer, and white pine blister rust. Early detection of problem pests allows management actions to be taken if needed to prevent serious impacts. Unit managers should check the areas periodically and call on pest management specialists to...
Resource Type:: Technical Report
Full Text:: Forest Pest Management SDP/ 43 INSECT AND DISEASE SURVEYS41

Creator:: Gibson, Kenneth E., McGregor, Mark D., Oakes, Robert D., and United States. Forest Service. Northern Region
Abstract:: The mountain pine beetle infestation existing on the Crow Indian Reservation (IR) since the early 1970's, and later developing principally in the western portion of the Northern Cheyenne IR, continued into 1984. Survey results indicate the infestation is still building on both Reservations. To help develop beetle management strategies appropriate...
Resource Type:: Technical Report
Full Text:: . Bousfield, Wayne E. 1980. R-1 Forest Insect and Disease Damage Survey System. • USDA Forest Serv., For

Creator:: McGregor, Mark D., Oakes, Robert D., Meyer, Hubert E., and United States. Forest Service. Northern Region
Abstract:: A granular controlled release formulation of 2 percent MCH was applied at 4.48 kg/ha to 76.9 ha of uninfested, windthrown Douglas-fir by helicopter with a modified aerial spreader of 1.12 m capacity in May 1982. Douglas-fir beetle population reduction was 96.4 percent by late June. With one exception, treated plots...
Resource Type:: Technical Report
Full Text:: . J. Barras, and J. E. Coster Tech. coords., Hazard Rating Systems in Forest Pest Management. Proc

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region
Abstract:: A rare outbreak of hemlock sawfly, Neodiprion tsugae Middleton, was detected in August in drainages near the Canadian border in Idaho infesting several thousand acres. Some stands of western hemlock and subalpine fir were severely defoliated. Understory Engelmann spruce trees were lightly defoliated. The sawfly overwinters in the egg stage...
Resource Type:: Technical Report
Full Text:: ) state that adverse weather (cold, wet summers and falls), a fungus disease, parasites, and depletion of

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

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:: Nursery had very few disease problems. Early damping-off losses were low and probably maintained at low

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:: larch, Douglas-fir, grand fir, subalpine fir, and ponderosa pine seedlings which displayed disease

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