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• 91. [Article] Evaluation of a weevil infestation in thinned lodgepole pine stands, Lewis and Clark National Forest, Montana

  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 ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of a weevil infestation in thinned lodgepole pine stands, Lewis and Clark National Forest, Montana Author: McGregor, Mark D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry 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 are relatively uncommon in Region 1 forests, the current problem has existed since 1965 (Fellin 1973). An evaluation of the infestation was made August 14, 1974. Title: Evaluation of a weevil infestation in thinned lodgepole pine stands, Lewis and Clark National Forest, Montana Author: McGregor, Mark D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry 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 are relatively uncommon in Region 1 forests, the current problem has existed since 1965 (Fellin 1973). An evaluation of the infestation was made August 14, 1974. Close

• 92. [Article] Evaluation of proposed dwarf mistletoe management projects on the Deerlodge National Forest

  Residual lodgepole pine in older clearcuts are dwarf mistletoe-infected and pose a threat to regeneration present. Removal of these residuals coupled with planned or completed precommercial thinnings will ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of proposed dwarf mistletoe management projects on the Deerlodge National Forest Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry Residual lodgepole pine in older clearcuts are dwarf mistletoe-infected and pose a threat to regeneration present. Removal of these residuals coupled with planned or completed precommercial thinnings will effectively reduce dwarf mistletoe to an insignificant level and increase future volume yields. The benefit/ cost ratios based on timber values alone are negative for both areas at both 10 and 6 percent discount rates, but other benefits outweigh the economic ones. Dwarf mistletoe management is recommended. Title: Evaluation of proposed dwarf mistletoe management projects on the Deerlodge National Forest Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry Residual lodgepole pine in older clearcuts are dwarf mistletoe-infected and pose a threat to regeneration present. Removal of these residuals coupled with planned or completed precommercial thinnings will effectively reduce dwarf mistletoe to an insignificant level and increase future volume yields. The benefit/ cost ratios based on timber values alone are negative for both areas at both 10 and 6 percent discount rates, but other benefits outweigh the economic ones. Dwarf mistletoe management is recommended. Close

• 93. [Article] Potential for infestation by mountain pine beetle in lodgepole pine stands, Hungry Horse District, Flathead National Forest, 1977

  Ground surveys on the Hungry Horse District indicate a potential for mountain pine beetle infestation in lodgepole pine. Based on elevation-latitude, mean d.b.h. and phloem thickness, and age, stands were ...

  Citation × Citation Citation Abstract Copy Title: Potential for infestation by mountain pine beetle in lodgepole pine stands, Hungry Horse District, Flathead National Forest, 1977 Author: United States. Forest Service. Northern Region. State & Private Forestry, Oakes, Robert D., Hamel, Dennis R., Hothem, R. Ground surveys on the Hungry Horse District indicate a potential for mountain pine beetle infestation in lodgepole pine. Based on elevation-latitude, mean d.b.h. and phloem thickness, and age, stands were given a susceptibility classification of high risk. An infestation in Glacier National Park may provide the beetle source. Management alternatives are discussed and long-term management goals are recommended. Title: Potential for infestation by mountain pine beetle in lodgepole pine stands, Hungry Horse District, Flathead National Forest, 1977 Author: United States. Forest Service. Northern Region. State & Private Forestry, Oakes, Robert D., Hamel, Dennis R., Hothem, R. Ground surveys on the Hungry Horse District indicate a potential for mountain pine beetle infestation in lodgepole pine. Based on elevation-latitude, mean d.b.h. and phloem thickness, and age, stands were given a susceptibility classification of high risk. An infestation in Glacier National Park may provide the beetle source. Management alternatives are discussed and long-term management goals are recommended. Close

• 94. [Article] Potential defoliation in 1979 from a ponderosa pine needle miner on the Flathead Indian Reservation and Missoula Valley, Montana

  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 ...

  Citation × Citation Citation Abstract Copy Title: Potential defoliation in 1979 from a ponderosa pine needle miner on the Flathead Indian Reservation and Missoula Valley, Montana Author: Meyer, Hubert E., United States. Forest Service. Northern Region. State & Private Forestry, Tunnock, Scott 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 areas. Title: Potential defoliation in 1979 from a ponderosa pine needle miner on the Flathead Indian Reservation and Missoula Valley, Montana Author: Meyer, Hubert E., United States. Forest Service. Northern Region. State & Private Forestry, Tunnock, Scott 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 areas. Close

• 95. [Article] Evaluation of a mountain pine beetle infestation in second-growth ponderosa pine on the Crow Indian Reservation, Montana, 1979

  The mountain pine beetle infestation in Corral, Little Corral, and Cache Creeks on the Crow Indian Reservation, Montana has been increasing for the past several years. Trees killed per acre averaged 38.8 ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of a mountain pine beetle infestation in second-growth ponderosa pine on the Crow Indian Reservation, Montana, 1979 Author: Dewey, Jerald E., McGregor, Mark D., Gibson, K. E. (Kenneth E.), United States. Forest Service. Northern Region. State & Private Forestry The mountain pine beetle infestation in Corral, Little Corral, and Cache Creeks on the Crow Indian Reservation, Montana has been increasing for the past several years. Trees killed per acre averaged 38.8 in 1979. Our predictions for the future trend of the infestation, plus management alternatives to lessen its severity, are outlined in this report. Title: Evaluation of a mountain pine beetle infestation in second-growth ponderosa pine on the Crow Indian Reservation, Montana, 1979 Author: Dewey, Jerald E., McGregor, Mark D., Gibson, K. E. (Kenneth E.), United States. Forest Service. Northern Region. State & Private Forestry The mountain pine beetle infestation in Corral, Little Corral, and Cache Creeks on the Crow Indian Reservation, Montana has been increasing for the past several years. Trees killed per acre averaged 38.8 in 1979. Our predictions for the future trend of the infestation, plus management alternatives to lessen its severity, are outlined in this report. Close

• 96. [Article] Establishment report : permanent plots to evaluate the effects of Armillaria root disease in precommercially thinned stands

  Methods used to establish permanent plots in precommercially thinned and unthinned stands to monitor root disease development are described. Plots were established in 22 Armillaria-infested stands in northern ...

  Citation × Citation Citation Abstract Copy Title: Establishment report : permanent plots to evaluate the effects of Armillaria root disease in precommercially thinned stands Author: Stewart, C. A., United States. Forest Service. Northern Region. State & Private Forestry, Hall, L. D., Byler, James W. Methods used to establish permanent plots in precommercially thinned and unthinned stands to monitor root disease development are described. Plots were established in 22 Armillaria-infested stands in northern Idaho and western Montana. The proportion of trees dead and infected was significantly higher for planted than for natural regeneration at the time of plot establishment. Title: Establishment report : permanent plots to evaluate the effects of Armillaria root disease in precommercially thinned stands Author: Stewart, C. A., United States. Forest Service. Northern Region. State & Private Forestry, Hall, L. D., Byler, James W. Methods used to establish permanent plots in precommercially thinned and unthinned stands to monitor root disease development are described. Plots were established in 22 Armillaria-infested stands in northern Idaho and western Montana. The proportion of trees dead and infected was significantly higher for planted than for natural regeneration at the time of plot establishment. Close

• 97. [Article] Mountain pine beetle status update, Plains Ranger District, Lolo National Forest, 1979

  Mountain pine beetle populations increased in 1979 in the Thompson River drainage to levels predicted following the 1978 attack period. New attacks in 1979 averaged 27 per acre. Current estimates indicate ...

  Citation × Citation Citation Abstract Copy Title: Mountain pine beetle status update, Plains Ranger District, Lolo National Forest, 1979 Author: United States. Forest Service. Northern Region. State & Private Forestry, Gibson, K. E. (Kenneth E.), Bennett, D. D. Mountain pine beetle populations increased in 1979 in the Thompson River drainage to levels predicted following the 1978 attack period. New attacks in 1979 averaged 27 per acre. Current estimates indicate another 25 percent of the remaining lodgepole pine could be killed in 1980. Title: Mountain pine beetle status update, Plains Ranger District, Lolo National Forest, 1979 Author: United States. Forest Service. Northern Region. State & Private Forestry, Gibson, K. E. (Kenneth E.), Bennett, D. D. Mountain pine beetle populations increased in 1979 in the Thompson River drainage to levels predicted following the 1978 attack period. New attacks in 1979 averaged 27 per acre. Current estimates indicate another 25 percent of the remaining lodgepole pine could be killed in 1980. Close

• 98. [Article] Status of bark beetle infestations in second-growth ponderosa pine stands, Bureau of Land Management lands Garnet Mountains, Montana

  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 ...

  Citation × Citation Citation Abstract Copy Title: Status of bark beetle infestations in second-growth ponderosa pine stands, Bureau of Land Management lands Garnet Mountains, Montana Author: United States. Forest Service. Northern Region. State & Private Forestry, Lood, Rudolph C., McGregor, Mark D. 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 problem. Title: Status of bark beetle infestations in second-growth ponderosa pine stands, Bureau of Land Management lands Garnet Mountains, Montana Author: United States. Forest Service. Northern Region. State & Private Forestry, Lood, Rudolph C., McGregor, Mark D. 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 problem. Close

• 99. [Article] Evaluation of pruning to reduce impact of white pine blister rust on selected areas in Yellowstone National Park

  White pine blister rust still poses a threat to the relic limber pine stand in the Mammoth Hot Springs Terrace area; pruning of cankers is an effective means of preserving the limber pine as long as po...

  Citation × Citation Citation Abstract Copy Title: Evaluation of pruning to reduce impact of white pine blister rust on selected areas in Yellowstone National Park Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry White pine blister rust still poses a threat to the relic limber pine stand in the Mammoth Hot Springs Terrace area; pruning of cankers is an effective means of preserving the limber pine as long as possible. Title: Evaluation of pruning to reduce impact of white pine blister rust on selected areas in Yellowstone National Park Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry White pine blister rust still poses a threat to the relic limber pine stand in the Mammoth Hot Springs Terrace area; pruning of cankers is an effective means of preserving the limber pine as long as possible. Close

• 100. [Article] Supplemental egg mass data from a Douglas-fir tussock moth infestation, North of Polson, Montana, April 1975

  A supplemental Douglas-fir tussock moth egg mass evaluation was made within three quarter sections north of Poison, Montana, during April 1975. These areas were being considered for a pilot control project ...

  Citation × Citation Citation Abstract Copy Title: Supplemental egg mass data from a Douglas-fir tussock moth infestation, North of Polson, Montana, April 1975 Author: United States. Forest Service. Northern Region. State & Private Forestry, Haglund, Steve, Ciesla, William M., Tunnock, Scott A supplemental Douglas-fir tussock moth egg mass evaluation was made within three quarter sections north of Poison, Montana, during April 1975. These areas were being considered for a pilot control project of a nucleopolyhedrosis virus spray. Results from the April evaluation showed these areas no longer qualified as sites for pilot control projects. Title: Supplemental egg mass data from a Douglas-fir tussock moth infestation, North of Polson, Montana, April 1975 Author: United States. Forest Service. Northern Region. State & Private Forestry, Haglund, Steve, Ciesla, William M., Tunnock, Scott A supplemental Douglas-fir tussock moth egg mass evaluation was made within three quarter sections north of Poison, Montana, during April 1975. These areas were being considered for a pilot control project of a nucleopolyhedrosis virus spray. Results from the April evaluation showed these areas no longer qualified as sites for pilot control projects. Close