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Creator:: Dewey, Jerald E. and United States. Forest Service. Northern Region
Abstract:: Aerial application of mexacarbate and Bacillus thuringiensis Berliner was tested against pine butterfly, Neophasia menapia (F. and F.). These were applied to 40-acre plots on the Bitterroot National Forest and adjacent State and private lands during June 1973. Two concentrations of each material were tested; these were 0.15 and 0.30...
Resource Type:: Technical Report
Full Text:: menapia (F. and F.), periodically reaches epidemic levels in ponderosa pine, Pinus ponderosae (Laws

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:: merchantable ponderosa pine in stands surveyed. Stands are stagnated, and trees appear stressed which is

Creator:: McGregor, Mark D., Kohler, Steve, and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: ponderosa pine stands in eastern Oregon: Site Basal area/acre III 160 IV 140 V 120 VI 100

Creator:: Bousfield, Wayne E. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: The pine butterfly, Neophasia menapia Feld., has been at epidemic levels in the Bitterroot and Missoula valleys for the past 2 years (Ciesla et al. 1971) (Bousfield and Meyer 1972). Several reports of conspicuous pine butterfly flights on the Flathead Indian Reservation prompted an evaluation of the potential for pine...
Resource Type:: Technical Report
Full Text:: Insect and Disease Branch POTENTIAL FOR THE PINE BUTTERFLY DEFOLIATION • • The pine butterfly

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: This report documents the establishment of a study to determine the effect of thinning on incidence of mountain pine beetle, Dendroctonus ponderosae Hopk., infestation in second-growth ponderosa pine stands in western Montana. Although insufficient time has passed for a similar study in Oregon to yield a solid base for a...
Resource Type:: Technical Report
Full Text:: are shown in Tables 1, 2, 3, and 4. REFERENCE CITED Sartwell, Charles, 1971. Thinning ponderosa pine

Creator:: United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: beetle population in ponderosa pine stands in the Ninemile area of the Lolo National Forest and set a

Creator:: Tunnock, Scott, Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: infested by a ponderosa pine needle miner in the Flathead Indian Reservation and Missoula Valley during

Creator:: Tunnock, Scott, Meyer, Hubert E., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: ponderosa pine trees were heavily defoliated in 1976 and 1977 and many contain only 1977 needles. Some top

Creator:: Hamel, Dennis R. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle infestations in second-growth ponderosa pine developed in 1973 in the Little Rocky Mountains. In 1976, increasing numbers of attacked trees were observed. Current infestation intensity averages 7.1 trees per acre. Losses are expected to continue as long as stands remain overstocked and stagnated. Reduction of basal area...
Resource Type:: Technical Report
Full Text:: pine beetle (Dendroctonus ponderosas Hopk.) is a serious pest of second-growth ponderosa pine (Pinus

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: A mountain pine beetle outbreak developed on the north face of Shook Mountain in 1972. Beetle populations increased, and have continued at an epidemic level since 1973. Surveys show 404,798 ponderosa pine containing 12,173,940 bd. ft. volume of merchantable timber; and 20,875 lodgepole pine containing 730,625 bd. ft. volume of...
Resource Type:: Technical Report
Full Text:: increased, and have continued at an epidemic level since 1973. Surveys show 404,798 ponderosa pine

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