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Creator:: Franc, G. C., Underwood, P. W., Dewey, Jerald E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The current western spruce budworm, Choristoneura occidentalis Freeman, outbreak on the Clearwater National Forest was first detected in 1966. Since then, the infestation has increased to epidemic proportions with over 500,000 acres of State, Federal, and private forest land visibly defoliated. In addition, incipient budworm populations are present throughout much...
Resource Type:: Technical Report
Full Text:: NF, report 1-72-4, July 1972. USDA Forest Service, Div. State and Priv. Forestry, Missoula, MT

Creator:: Dewey, Jerald E. and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: - 1972. USDA Forest Serv., Northern Reg., Div. State and Priv. Forestry, Missoula, MT 59801, report 73-12

Creator:: McGregor, Mark D., Kohler, Steve, Ferry, Gardner, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle reached epidemic levels in second-growth ponderosa pine stands on Bureau of Indian Affairs and private lands on the Crow Indian Reservation. Approximately 9,106 trees containing 420,266 merchantable board feet were killed from 1971 to 1973. This is about 24 percent of the merchantable ponderosa pine in stands...
Resource Type:: Technical Report
Full Text:: -7, Missoula, Mont. McGregor, M.D. and S. Kohler, 1973. Evaluation of mountain pine beetle in

Creator:: Tunnock, Scott, Kohler, Steve, and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: In 1973, two centers of defoliation by Douglas-fir tussock moth totaling 350 acres were detected near Missoula, Montana. Egg mass surveys showed two sections south of Frenchtown and one section northwest of Lolo 41, contain sufficient egg mass population to cause heavy defoliation in 1974.
Resource Type:: Technical Report
Full Text:: . Report 73-23, USDA, Forest Serv., Div. State and Priv. Forestry, Fed. Bldg., Missoula, Montana

Creator:: Hemel, Dennis R., McGregor, Mark D., Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle activity has increased from about 350 infested trees in 1972 to over 1,200 infested trees in 1974 on the Bitterroot National Forest. The majority of infestation occurs in second-growth, overstocked, ponderosa pine stands in the West Fork Bitterroot drainage. An increase in number of trees killed is...
Resource Type:: Technical Report
Full Text:: killed in 1973 were mapped during the annual aerial insect and disease detection survey this year. Groups

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An attempt was made to predict western spruce budworm defoliation using egg counts from plots in the Douglas-fir type east of the Continental Divide in Montana, the Douglas-fir type west of the Continental Divide in Montana, and the mixed grand fir Douglas-fir type of northern Idaho. The parameters used in...
Resource Type:: Technical Report
Full Text:: still advocate their use today (Carolin and Coulter 1972). STATE & PRIVATE FORESTRY MISSOULA, MONTANA

Creator:: Tunnock, Scott and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An aerial survey during 1974 revealed approximately 5,000 acres of various degrees of Douglas-fir tussock moth, Orgyia pseudotsugata McD., defoliation in the lower Flathead Valley. An egg mass survey was made in September to determine the potential for damage in 1975. Based on new egg mass densities, significant defoliation may...
Resource Type:: Technical Report
Full Text:: . Forestry, Missoula, Mont., report 73-27. Tunnock, S., and R. L. Livingston, 1974. Potential Douglas-fir

Creator:: Hamel, Dennis R., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: An infestation of a defoliating weevil, Magdalis gentilis LeConte, was reported in July by Hank Manning, Judith Ranger District forester, Lewis and Clark National Forest. The infestation occurs in precommercially thinned stands of lodgepole pine, Pinus contorta var./atifblia Engelm. in the Moose Creek drainage. Although damages caused by M. gentilis...
Resource Type:: Technical Report
Full Text:: a USDA FOREST SERVICE NORTHERN REGION 5200 Report No. 74-23

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The mountain pine beetle reached epidemic levels in second-growth 80-yearold ponderosa pine stands on the Ninemile Ranger District in 1969. The outbreak increased through 1971 and spread over 30,000 acres. Heavy infestation occurred on about 2,600 acres within this area. A two-stage survey was used during 1972 and 1973 to...
Resource Type:: Technical Report
Full Text:: several thousand fading trees were mapped during the annual insect and disease detection survey during

Creator:: Carlson, Clinton E. and United States. Forest Service. Division of State and Private Forestry
Abstract:: During August 1972, 15 vegetation plots monitered for foliar fluoride concentrations in 1971 were resampled near the Anaconda aluminum plant at Columbia Falls, Montana. Statistical analysis of the data showed that essentially the same amount of fluoride was taken in by conifers, shrubs, and grasses in 1972 as in 1971....
Resource Type:: Technical Report
Full Text:: 1971 and 1972. DIVISION OF STATE & PRIVATE FORESTRY MISSOULA, MONTANA R2-P2 R3-P3 R3-P4 R5-P4 R5

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