Index Catalog // ScholarsArchive@OSU

Creator:: Gibson, Kenneth E., Oakes, Robert D., and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: northern Idaho and extreme western Montana which have a history of root disease. Trees in those stands have

Creator:: Gibson, Kenneth E., Oakes, Robert D., and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: determined by precipitation and resultant condition of host trees. Fir Engraver (FE) Fir engraver, a pest

Creator:: Gibson, Kenneth E., Oakes, Robert D., and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: Table 1 Acres under Federal jurisdiction in the Northern Region 4 Table 2 Acres of State and private

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., 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:: devastating pest of pine species throughout the western United States, continued to deplete second-growth

Creator:: Gibson, Kenneth E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Six Montana areas in which permanent mountain pine beetle trend plots were established in 1979 were revisited in 1980. Results of the visit show infestation intensity decreased significantly in Centennial Valley, decreased slightly in the Madison River plot area, and increased almost threefold in the Murr Creek area. Beetle populations...
Resource Type:: Technical Report
Full Text:: readily apparent. Though the lodgepole component of the United States Forest Northern State

Creator:: Gibson, Kenneth E., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle populations increased in 1979 in the Thompson River drainage to levels predicted following the 1978 attack period. New attacks in 1979 averaged 27 per acre. Current estimates indicate another 25 percent of the remaining lodgepole pine could be killed in 1980.
Resource Type:: Technical Report
Full Text:: within the plot was measured and recorded regardless of species. Mountain pine beetle host trees were

Creator:: Gibson, Kenneth E., McGregor, Mark D., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The mountain pine beetle infestation on Bureau of Land Management lands in Centennial Valley has increased from about 500 acres in 1977 to more than 7,000 in 1979. Average number of trees per acre killed has more than quadrupled, increasing from 9.8 in 1977 to 47.8 in 1979. Predictions for...
Resource Type:: Technical Report
Full Text:: Aerial detection surveys for insect and disease outbreaks are conducted annually throughout the Northern

Creator:: Gibson, Kenneth E., McGregor, Mark D., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Thirty permanent mountain pine beetle population trend plots were established in each of six areas in the state in 1979. Infestation levels ranged from 0 to 47.8 new attacks per acre. The potential for increased mortality is considered high for all areas. Each area will be evaluated for 5 years...
Resource Type:: Technical Report
Full Text:: . Bennett (USDA-Forest Service, Northern Region, Forest Insect and Disease Management Report No. 80-8

ScholarsArchive@OSU