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Permanent mountain pine beetle population trend plots : an update, 1981

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

Overwintering survival of mountain pine beetle larvae and resultant effects on beetle populations in the Northern Region in 1979

Creator:: Gibson, Kenneth E., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: During December 1978 and January 1979, temperatures reached all-time lows in some parts of Montana. Overwintering mountain pine beetle populations were sampled at 11 sites during February and March 1979. Effects of the extreme cold varied from site to site, with larval mortality ranging from 6 percent to 100 percent....
Resource Type:: Technical Report
Full Text:: USDA • FOREST SERVICE • NORTN State & Private Forestry • Missou' M porn: it 3450 .Report No. 79-15

Evaluation of spruce beetle, Glacier View Ranger District, Flathead National Forest, 1981

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: States Department of Agriculture Forest Service Northern Region State & Private Forestry RA. Box 7669

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:: planned for other National Forests in the Northern Region to provide data for the National Forest Insect

Evaluation of dwarf mistletoe control projects, Sula and Darby Ranger Districts, Bitterroot National Forest

Creator:: Dooling, Oscar J. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Residual Douglas-fir are dwarf mistletoe-infested and pose a threat to regeneration. Felling of these residuals will reduce dwarf mistletoe intensity and increase future volume yields. The benefit/cost ratio at 4 percent for the current rotation is 0.51/1 on the Sula RD and 0.45/1 on the Darby RD (both negative ratios)....
Resource Type:: Technical Report
Full Text:: Agriculture Forest Service Northern Region State & Private Forestry RO.Box 7669 Missoula, Montana 59807

Mountain pine beetle status update, Plains Ranger District, Lolo National Forest, 1979

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:: Northern State & P.O. Box 7669 Department of Service Region Private Missoula, Montana Agriculture

An evaluation of cone and seed insects in selected seed production areas in Region 1 : progress report II

Creator:: Dewey, Jerald E., Jenkins, Michael J., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Insect damage was extensive to Douglas-fir, ponderosa pine, western white pine, and western larch cones at most seed production areas surveyed in 1979. From 70 to 100 percent of the cones from several collecting periods were injured. Moderate damage (40-70 percent of cones injured) occurred to Douglas-fir, ponderosa pine, western...
Resource Type:: Technical Report
Full Text:: Service Northern Region State & Private Forestry P.O. Box 7669 Missoula, Montana 59807 species those

Effects of Dipel wettable powder for foliage protection against western spruce budworm 1 and 2 years following aerial application

Creator:: Bousfield, Wayne E., Flavell, Thomas H., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: This evaluation showed that Bt provided measurable foliage protection 1 year after treatment, but no differences were evident after 2 years. We recommend future Bt tests include postspray population measurements in the pupal and/or adult, and/or egg stage, and that foliage protection be measured the following year. The effects of...
Resource Type:: Technical Report
Full Text:: States Department of Agriculture Forest Service Northern Region State & Private Forestry P.O. Box

Mountain pine beetle infestation potential for the Plains Ranger District, Lolo National Forest

Creator:: Gibson, Kenneth E., United States. Forest Service. Northern Region. Forest Insect and Disease Management, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: This report contains an overview of the present mountain pine beetle infestation in lodgepole pine stands on Federal, State, and private lands on the Plains Ranger District. Particular emphasis is placed on the potential for beetle mortality in the Thompson River drainage where recent ground surveys show more than 21...
Resource Type:: Technical Report
Full Text:: USDA • FOREST SERVICE • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 3450 Report No

Evaluation of mountain pine beetle infestation, Hebgen Lake Ranger District, Gallatin National Forest, Montana, 1978

Creator:: McGregor, Mark D., Bennett, D. D., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle populations developed to epidemic level in 1970 on the Hebgen Lake Ranger District. Infested acreage increased from 78,000 in 1977 to 79,061 in 1978. More than 4 million trees (238 MMBF) were killed in 1978. Cold temperatures during December 1978 may cause a significant decline in the...
Resource Type:: Technical Report
Full Text:: SERVICE • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 3450 Report No. 79-6 February

ScholarsArchive@OSU

Permanent mountain pine beetle population trend plots : an update, 1981

Overwintering survival of mountain pine beetle larvae and resultant effects on beetle populations in the Northern Region in 1979

Evaluation of spruce beetle, Glacier View Ranger District, Flathead National Forest, 1981

Root disease survey on the Nezperce National Forest, Idaho

Evaluation of dwarf mistletoe control projects, Sula and Darby Ranger Districts, Bitterroot National Forest

Mountain pine beetle status update, Plains Ranger District, Lolo National Forest, 1979

An evaluation of cone and seed insects in selected seed production areas in Region 1 : progress report II

Effects of Dipel wettable powder for foliage protection against western spruce budworm 1 and 2 years following aerial application

Mountain pine beetle infestation potential for the Plains Ranger District, Lolo National Forest

Evaluation of mountain pine beetle infestation, Hebgen Lake Ranger District, Gallatin National Forest, Montana, 1978

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