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• 11. [Article] An evaluation of a developing mountain pine beetle infestation in Centennial Valley, Montana, 1979

  The mountain pine beetle infestation on Bureau of Land Management lands in Centennial Valley has increased from about 500 acres in 1977 to more than 7,000 in 1979. Average number of trees per acre killed ...

  Citation × Citation Citation Abstract Copy Title: An evaluation of a developing mountain pine beetle infestation in Centennial Valley, Montana, 1979 Author: United States. Forest Service. Northern Region. State & Private Forestry, Gibson, K. E. (Kenneth E.), McGregor, Mark D., Bennett, D. D. The mountain pine beetle infestation on Bureau of Land Management lands in Centennial Valley has increased from about 500 acres in 1977 to more than 7,000 in 1979. Average number of trees per acre killed has more than quadrupled, increasing from 9.8 in 1977 to 47.8 in 1979. Predictions for the future of the infestation, plus management alternatives to lessen the severity of the outbreak are discussed. Title: An evaluation of a developing mountain pine beetle infestation in Centennial Valley, Montana, 1979 Author: United States. Forest Service. Northern Region. State & Private Forestry, Gibson, K. E. (Kenneth E.), McGregor, Mark D., Bennett, D. D. The mountain pine beetle infestation on Bureau of Land Management lands in Centennial Valley has increased from about 500 acres in 1977 to more than 7,000 in 1979. Average number of trees per acre killed has more than quadrupled, increasing from 9.8 in 1977 to 47.8 in 1979. Predictions for the future of the infestation, plus management alternatives to lessen the severity of the outbreak are discussed. Close

• 12. [Article] Establishment report : permanent mountain pine beetle population trend plots, Montana, 1979

  Thirty permanent mountain pine beetle population trend plots were established in each of six areas in the state in 1979. Infestation levels ranged from 0 to 47.8 new attacks per acre. The potential for ...

  Citation × Citation Citation Abstract Copy Title: Establishment report : permanent mountain pine beetle population trend plots, Montana, 1979 Author: Bennett, D. D., Gibson, K. E. (Kenneth E.), United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D. Thirty permanent mountain pine beetle population trend plots were established in each of six areas in the state in 1979. Infestation levels ranged from 0 to 47.8 new attacks per acre. The potential for increased mortality is considered high for all areas. Each area will be evaluated for 5 years to determine the course of the infestation and resultant impact to the stands. Title: Establishment report : permanent mountain pine beetle population trend plots, Montana, 1979 Author: Bennett, D. D., Gibson, K. E. (Kenneth E.), United States. Forest Service. Northern Region. State & Private Forestry, McGregor, Mark D. Thirty permanent mountain pine beetle population trend plots were established in each of six areas in the state in 1979. Infestation levels ranged from 0 to 47.8 new attacks per acre. The potential for increased mortality is considered high for all areas. Each area will be evaluated for 5 years to determine the course of the infestation and resultant impact to the stands. Close