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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:: October 1974 EVALUATION OF A WEEVIL INFESTATION IN THINNED LODGEPOLE PINE STANDS • LEWIS AND CLARK

Creator:: Bennett, D. D., McGregor, Mark D., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: lilt Forest Insect & Disease Management Report No. 80-16 A

Creator:: McGregor, Mark D., Lood, Rudolph C., and United States. Forest Service. Northern Region. State & Private Forestry
Abstract:: Mountain pine beetle infestations have increased in second-growth ponderosa pine stands in the Garnet Mountains since 1971. The extremely dry 1973 season resulted in an increase of Ips engraver beetle activity that was responsible for over half of the tree mortality in 1973. Commercial thinning is recommended to alleviate the...
Resource Type:: Technical Report
Full Text:: through August. They became a serious problem throughout the Clark Fork River drainage in 1966 and

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:: -broken trees caused by heavy snow in 1971, was probably a major factor responsible for the outbreak

Creator:: McGregor, Mark D., Gibson, Kenneth E., Bennett, D. D., and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: Flathead River, depicts a por- tion of the more than 12 million trees killed there in 1977. BARK BEETLE

Creator:: McGregor, Mark D. and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: 19 Helena National Forest 24 Kootenai National Forest 26 Lewis and Clark National Forest

Creator:: McGregor, Mark D., Oakes, Robert D., Meyer, Hubert E., United States. Forest Service. Northern Region. Cooperative Forestry & Pest Management, and United States. Forest Service. Northern Region. State & Private Forestry
Resource Type:: Technical Report
Full Text:: , devastated stands, and subsided on the Kootenai, Deerlodge, Lolo, and Bitterroot National Forests. A large

ScholarsArchive@OSU