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• 81. [Article] Evaluation of a mountain pine beetle infestation, Jack Creek Drainage, Madison District, Beaverhead National Forest, Montana, 1976

  Mountain pine beetle populations developed to epidemic level in lodgepole pine stands in 1973. Approximately 426,355 trees were killed on 3,433 hectares in 1976. Infestations are expected to intensify ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of a mountain pine beetle infestation, Jack Creek Drainage, Madison District, Beaverhead National Forest, Montana, 1976 Author: McGregor, Mark D., Oakes, Robert D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle populations developed to epidemic level in lodgepole pine stands in 1973. Approximately 426,355 trees were killed on 3,433 hectares in 1976. Infestations are expected to intensify in areas of current infestation and develop in uninfested stands. It is predicted that 1,722,288 trees will be killed in 1977. Salvage logging of infested trees and silvicultural management to reduce average stand diameter below 20.3 cm d.b.h. are recommended. Title: Evaluation of a mountain pine beetle infestation, Jack Creek Drainage, Madison District, Beaverhead National Forest, Montana, 1976 Author: McGregor, Mark D., Oakes, Robert D., Hamel, Dennis R., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle populations developed to epidemic level in lodgepole pine stands in 1973. Approximately 426,355 trees were killed on 3,433 hectares in 1976. Infestations are expected to intensify in areas of current infestation and develop in uninfested stands. It is predicted that 1,722,288 trees will be killed in 1977. Salvage logging of infested trees and silvicultural management to reduce average stand diameter below 20.3 cm d.b.h. are recommended. Close

• 82. [Article] Evaluation of proposed dwarf mistletoe management projects on the Sula Ranger District, Bitterroot National Forest

  Residual Douglas-fir 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 Sula Ranger District, Bitterroot National Forest Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry Residual Douglas-fir 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 ratio based on timber values alone is negative, but other benefits outweigh the economic ones. Dwarf mistletoe management is recommended. Title: Evaluation of proposed dwarf mistletoe management projects on the Sula Ranger District, Bitterroot National Forest Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry Residual Douglas-fir 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 ratio based on timber values alone is negative, but other benefits outweigh the economic ones. Dwarf mistletoe management is recommended. Close

• 83. [Article] Effects of Dipel wettable powder for foliage protection against western spruce budworm 1 and 2 years following aerial application

  This evaluation showed that Bt provided measurable foliage protection 1 year after treatment, but no differences were evident after 2 years. We recommend future Bt tests include postspray population measurements ...

  Citation × Citation Citation Abstract Copy Title: Effects of Dipel wettable powder for foliage protection against western spruce budworm 1 and 2 years following aerial application Author: United States. Forest Service. Northern Region. State & Private Forestry, Flavell, Thomas H., Bousfield, Wayne E. This evaluation showed that Bt provided measurable foliage protection 1 year after treatment, but no differences were evident after 2 years. We recommend future Bt tests include postspray population measurements in the pupal and/or adult, and/or egg stage, and that foliage protection be measured the following year. The effects of Bt on the population should not be evaluated in the same manner as fast-acting insecticides. Title: Effects of Dipel wettable powder for foliage protection against western spruce budworm 1 and 2 years following aerial application Author: United States. Forest Service. Northern Region. State & Private Forestry, Flavell, Thomas H., Bousfield, Wayne E. This evaluation showed that Bt provided measurable foliage protection 1 year after treatment, but no differences were evident after 2 years. We recommend future Bt tests include postspray population measurements in the pupal and/or adult, and/or egg stage, and that foliage protection be measured the following year. The effects of Bt on the population should not be evaluated in the same manner as fast-acting insecticides. Close

• 84. [Article] Guidelines for dwarf mistletoe control in lodgepole pine in the Northern and Central Rocky Mountains

  The lodgepole pine type commonly occurs as an even-aged, singlestoried, and overstocked forest. Dwarf mistletoe is widespread throughout the type and causes growth and quality reduction, reduced seed production, ...

  Citation × Citation Citation Abstract Copy Title: Guidelines for dwarf mistletoe control in lodgepole pine in the Northern and Central Rocky Mountains Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Brown, Doland H. The lodgepole pine type commonly occurs as an even-aged, singlestoried, and overstocked forest. Dwarf mistletoe is widespread throughout the type and causes growth and quality reduction, reduced seed production, and some direct mortality. The land manager has three alternatives where dwarf mistletoe occurs: (1) do nothing, (2) eradicate the stand, or (3) reduce the infestation to a tolerable level. The nature of the disease as an obligate parasite with a restricted potential for spread provides an excellent opportunity for effective control by removal of infected trees as an integral part of silvicultural management. Title: Guidelines for dwarf mistletoe control in lodgepole pine in the Northern and Central Rocky Mountains Author: Dooling, Oscar J., United States. Forest Service. Northern Region. State & Private Forestry, Brown, Doland H. The lodgepole pine type commonly occurs as an even-aged, singlestoried, and overstocked forest. Dwarf mistletoe is widespread throughout the type and causes growth and quality reduction, reduced seed production, and some direct mortality. The land manager has three alternatives where dwarf mistletoe occurs: (1) do nothing, (2) eradicate the stand, or (3) reduce the infestation to a tolerable level. The nature of the disease as an obligate parasite with a restricted potential for spread provides an excellent opportunity for effective control by removal of infected trees as an integral part of silvicultural management. Close

• 85. [Article] Yaak and Thompson River demonstration areas to manage mountain pine beetle in lodgepole pine : progress report no. 1

  Citation × Citation Citation Abstract Copy Title: Yaak and Thompson River demonstration areas to manage mountain pine beetle in lodgepole pine : progress report no. 1 Author: United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D., Bennett, D. D. Title: Yaak and Thompson River demonstration areas to manage mountain pine beetle in lodgepole pine : progress report no. 1 Author: United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D., Bennett, D. D. Close

• 86. [Article] Monitoring root disease mortality : establishment report

  Two thousand and thirty-nine trees on 213 plots are being monitored yearly for root disease infection and mortality. Three compartments on the Fernan Ranger District of the Idaho Panhandle National Forests ...

  Citation × Citation Citation Abstract Copy Title: Monitoring root disease mortality : establishment report Author: United States. Forest Service. Northern Region. State & Private Forestry, Hagle, Susan K. Two thousand and thirty-nine trees on 213 plots are being monitored yearly for root disease infection and mortality. Three compartments on the Fernan Ranger District of the Idaho Panhandle National Forests are the site of the project. Relationships between factors such as species, aspect, slope, elevation, habitat type, stand appearance on aerial photography, plot root disease severity ratings, and measured volume losses due to root disease mortality are being evaluated. Effective means of judging past and future losses in root disease-affected stands are sought. Title: Monitoring root disease mortality : establishment report Author: United States. Forest Service. Northern Region. State & Private Forestry, Hagle, Susan K. Two thousand and thirty-nine trees on 213 plots are being monitored yearly for root disease infection and mortality. Three compartments on the Fernan Ranger District of the Idaho Panhandle National Forests are the site of the project. Relationships between factors such as species, aspect, slope, elevation, habitat type, stand appearance on aerial photography, plot root disease severity ratings, and measured volume losses due to root disease mortality are being evaluated. Effective means of judging past and future losses in root disease-affected stands are sought. Close

• 87. [Article] Succession functions of forest pathogens and insects : ecosections M332a and M333d in northern Idaho and western Montana

  Citation × Citation Citation Abstract Copy Title: Succession functions of forest pathogens and insects : ecosections M332a and M333d in northern Idaho and western Montana Author: United States. Forest Service. Northern Region. State & Private Forestry, Hagle, Susan K., United States. Forest Health Protection Title: Succession functions of forest pathogens and insects : ecosections M332a and M333d in northern Idaho and western Montana Author: United States. Forest Service. Northern Region. State & Private Forestry, Hagle, Susan K., United States. Forest Health Protection Close

• 88. [Article] Potential for larch casebearer defoliation in the Northern Region, 1972

  The larch casebearer Coleophora laricella (Hbn.) is now established throughout all western larch stands in Region 1. Population levels have begun to fluctuate in some of the older infested stands; however, it ...

  Citation × Citation Citation Abstract Copy Title: Potential for larch casebearer defoliation in the Northern Region, 1972 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E. The larch casebearer Coleophora laricella (Hbn.) is now established throughout all western larch stands in Region 1. Population levels have begun to fluctuate in some of the older infested stands; however, it is still on the increase in more recently invaded territory. During the past 2 years work was begun to develop a method to forecast defoliation and tg ollow trends of the larch casebearer (Ciesla and Bousfield 1971).111/ The purpose of these evaluations was to establish the relationship between the overwintering population and subsequent defoliation for prediction purposes. Title: Potential for larch casebearer defoliation in the Northern Region, 1972 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E. The larch casebearer Coleophora laricella (Hbn.) is now established throughout all western larch stands in Region 1. Population levels have begun to fluctuate in some of the older infested stands; however, it is still on the increase in more recently invaded territory. During the past 2 years work was begun to develop a method to forecast defoliation and tg ollow trends of the larch casebearer (Ciesla and Bousfield 1971).111/ The purpose of these evaluations was to establish the relationship between the overwintering population and subsequent defoliation for prediction purposes. Close

• 89. [Article] Evaluation of a mountain pine beetle infestation, Stoney Creek, Ninemile District, Lolo National Forest, 1975

  Mountain pine beetle populations reached epidemic levels in 1972 in the Stoney Creek drainage, Ninemile District, Lolo National Forest, Montana. A total of 8,082 trees with an estimated volume loss of 34,356 ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of a mountain pine beetle infestation, Stoney Creek, Ninemile District, Lolo National Forest, 1975 Author: McGregor, Mark D., Shipe, Tilford C., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle populations reached epidemic levels in 1972 in the Stoney Creek drainage, Ninemile District, Lolo National Forest, Montana. A total of 8,082 trees with an estimated volume loss of 34,356 board feet has occurred from 1972 to 1974. Buildup ratio was 1:1.2 from 1972 to 1973, and 1:1.8 from 1973 to 1974. Losses are expected to increase in 1975. Commercial thinning is recommended in unthinned stands. Title: Evaluation of a mountain pine beetle infestation, Stoney Creek, Ninemile District, Lolo National Forest, 1975 Author: McGregor, Mark D., Shipe, Tilford C., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle populations reached epidemic levels in 1972 in the Stoney Creek drainage, Ninemile District, Lolo National Forest, Montana. A total of 8,082 trees with an estimated volume loss of 34,356 board feet has occurred from 1972 to 1974. Buildup ratio was 1:1.2 from 1972 to 1973, and 1:1.8 from 1973 to 1974. Losses are expected to increase in 1975. Commercial thinning is recommended in unthinned stands. Close

• 90. [Article] Status of mountain pine beetle infestations, Glacier National Park, 1974

  Mountain pine beetle populations reached epidemic levels on approximately 4,600 acres in Glacier National Park in 1972. Infested trees increased from 4.9 in 1972 to 10.9/acre in 1975. Majority of trees killed ...

  Citation × Citation Citation Abstract Copy Title: Status of mountain pine beetle infestations, Glacier National Park, 1974 Author: United States. Forest Service. Northern Region. Forest Environmental Protection, McGregor, Mark D., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle populations reached epidemic levels on approximately 4,600 acres in Glacier National Park in 1972. Infested trees increased from 4.9 in 1972 to 10.9/acre in 1975. Majority of trees killed since 1972 were 12 inches d.b.h. and larger in size. Sufficient large diameter lodgepole pine exists to maintain the infestation at epidemic level for several years. Title: Status of mountain pine beetle infestations, Glacier National Park, 1974 Author: United States. Forest Service. Northern Region. Forest Environmental Protection, McGregor, Mark D., United States. Forest Service. Northern Region. State & Private Forestry Mountain pine beetle populations reached epidemic levels on approximately 4,600 acres in Glacier National Park in 1972. Infested trees increased from 4.9 in 1972 to 10.9/acre in 1975. Majority of trees killed since 1972 were 12 inches d.b.h. and larger in size. Sufficient large diameter lodgepole pine exists to maintain the infestation at epidemic level for several years. Close