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A reevaluation of 1978 aerial Bacillus thuringiensis Berliner (Bt) applications for cankerworm control in Siberian elm shelterbelts

Creator:: Hard, John S. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: 1. Defoliation by cankerworms in 1979 was significantly less in 1978 treated shelterbelts than in untreated shelterbelts. 2. Most shelterbelts treated in 1978 retained enough foliage by late June 1979 so that adjacent crops were protected from wind. 3. Aerially applied Bt at a rate of 1/2 lb./acre provided shelterbelt...
Resource Type:: Technical Report
Full Text:: Siberian elm shelterbelts. USDA-Forest Service, Northern Region, State and Private Forestry

Evaluation of a proposed dwarf mistletoe management project on the Sula Ranger District, Bitterroot National Forest

Creator:: Dooling, Oscar J. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Residual Douglas-fir left after harvesting are dwarf mistletoe infected and pose a threat' to regeneration in some units. Removal of residuals, coupled with planned or completed site preparation and thinnings, will effectively reduce dwarf mistletoe incidence and increase future volume yields. The benefit/cost ratio based on timber values alone is...
Resource Type:: Technical Report
Full Text:: • FOREST SERVICE • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 L:"; LZ- ?. 4' 53 • g

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

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

A review of selected mountain pine beetle epidemics and the infestation potential for the Tally Lake Ranger District, Flathead National Forest, Montana

Creator:: Gibson, Kenneth E., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: This report contains a brief history of selected mountain pine beetle infestations and the potential for infestations in high hazard stands on the Tally Lake Ranger District. Management alternatives to lessen the severity, or reduce the possibility, of infestations are discussed.
Resource Type:: Technical Report
Full Text:: • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 3450 eport No. 79-5 March 1979 A REVIEW

Reevaluation of larch casebearer parasites in casebearer-infested stands of Region I

Creator:: Flavell, Thomas H. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The larch casebearer, Coleophora laricella (Hubner) was first reported attacking western larch, Larix occidentalis, in Idaho in 1957 (Denton, 1958), 71 years after its introduction into Massachusetts from Europe. The apparent successful regulation of this insect in the eastern U.S. by introduced parasites prompted biological control attempts in the West....
Resource Type:: Technical Report
Full Text:: USDA • FOREST SERVICE • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 Report 79-3

R-1 forest insect and disease damage survey system

Creator:: Bousfield, Wayne E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The purpose of insect and disease damage surveys is to estimate losses caused by various pests, so that the land manager can prescribe appropriate management action. Systematic ground data collection systems provide to the land manager loss data that can be used for cost benefit analysis, management plans, environmental impact...
Resource Type:: Technical Report
Full Text:: FOREST INSECT & DISEASE MANAGEMENT USDA • FOREST SERVICE • NORTHERN

R-1 forest insect and disease damage survey system

Creator:: Bousfield, Wayne E. and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: • NORTHERN REGION State & Private Forestry • Missoula, MT 59801 Report No. 79-2 3450 January 1979 R-1

Potential defoliation in 1979 from a ponderosa pine needle miner on the Flathead Indian Reservation and Missoula Valley, Montana

Creator:: Tunnock, Scott, Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A needle miner, Coleotechnites sp., defoliated approximately 3,100 acres of ponderosa pine, Pinus ponderosa Laws. on the Flathead Indian Reservation, Montana, during 1978. Three other small areas in the Missoula Valley were infested also. Overwintering populations of larvae are low; thus, light defoliation is expected in 1979 in presently infested...
Resource Type:: Technical Report
Full Text:: A3 FOREST R4 i INSECT & DISEASE 7?- x MANAGEMENT USDA • FOREST SERVICE • NORTHERN REGION State

ScholarsArchive@OSU

A reevaluation of 1978 aerial Bacillus thuringiensis Berliner (Bt) applications for cankerworm control in Siberian elm shelterbelts

Evaluation of a proposed dwarf mistletoe management project on the Sula Ranger District, Bitterroot National Forest

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

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

A review of selected mountain pine beetle epidemics and the infestation potential for the Tally Lake Ranger District, Flathead National Forest, Montana

Reevaluation of larch casebearer parasites in casebearer-infested stands of Region I

R-1 forest insect and disease damage survey system

R-1 forest insect and disease damage survey system

Potential defoliation in 1979 from a ponderosa pine needle miner on the Flathead Indian Reservation and Missoula Valley, Montana

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