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Creator:: Gast, Sandy, Gibson, Kenneth E., and United States. Forest Service. Northern Region
Abstract:: In conjunction with a proposed suppression project against the Douglas-fir tussock moth in northern Idaho, more than 1,000 larvae were collected from sample plots throughout the 32,000-acre treatment area. We had hoped to determine naturally occurring mortality factors which may have contributed to lower than anticipated population levels. Reared on...
Resource Type:: Technical Report
Full Text:: Forest Pest Management • •• • • • 3450 Report No 87-4

Creator:: Gibson, Kenneth E., Byler, James W., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: in recreation sites. USDA-Forest Serv., State and Private For., Rocky Mtn. Region. Tech. Rept. R2-1

Creator:: Monnig, Edward C. and United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management
Resource Type:: Technical Report
Full Text:: united States no. 3-7"&pepartment • of Agriculture Forest Service Northern Region.o Analysis of the

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:: • • • • • • • 410 United States Forest Northern

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

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:: 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:: 1964, the • Canadian Forest Service in British Columbia reported an oytbreak in the Nelson area about

Creator:: Bousfield, Wayne E., Cifala, Frank, Kracht, Richard, and United States. Forest Service. Northern Region
Abstract:: The microbial insecticide, Bacillus thuringensis (Bt), was applied from fixed-wing aircraft to approximately 700 acres of western spruce budworm host type at the rate of 12 billion international units (BIU's) per gallon of water per acre. The objective of this control project was foliage protection to insure future cone production...
Resource Type:: Technical Report
Full Text:: Forest, Montana 4/ Silviculturiet, Gallatin National Forest, Bozeman, MT United States • Department of

Creator:: Bollenbacher, Barry, Gibson, Kenneth E., and United States. Forest Service. Northern Region
Resource Type:: Technical Report
Full Text:: resources involved. The Swan Lake Ranger District, Flathead National Forest, was faced with such a task in

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region
Abstract:: The cranberry girdler, Chrysoteuchia toparia Zeller, has caused increasing damage to tree seedlings in the Coeur d'Alene Nursery since 1980. Heaviest feeding has occurred on the tap roots of 2+0 Douglas-fir stock. By 1983, 8.2 percent of the seedlings examined in seedbeds were injured by this moth. A spray program...
Resource Type:: Technical Report
Full Text:: .• • • • • • • United States Forest Northern P.O. Box 7669 Department of Service Region Missoula, Montana

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