Search

Search Results

• 1. [Article] Bark beetle conditions, Northern Region, 1987

  Citation × Citation Citation Abstract Copy Title: Bark beetle conditions, Northern Region, 1987 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Title: Bark beetle conditions, Northern Region, 1987 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Close

• 2. [Article] Bark beetle conditions, Northern Region, 1988

  Citation × Citation Citation Abstract Copy Title: Bark beetle conditions, Northern Region, 1988 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Title: Bark beetle conditions, Northern Region, 1988 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Close

• 3. [Article] Mountain pine beetle status report, Northern Region, 1986

  Citation × Citation Citation Abstract Copy Title: Mountain pine beetle status report, Northern Region, 1986 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Title: Mountain pine beetle status report, Northern Region, 1986 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Close

• 4. [Article] Bark beetle conditions, Northern Region, 1993

  Citation × Citation Citation Abstract Copy Title: Bark beetle conditions, Northern Region, 1993 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Title: Bark beetle conditions, Northern Region, 1993 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Close

• 5. [Article] Bark beetle conditions, Northern Region, 1992

  Citation × Citation Citation Abstract Copy Title: Bark beetle conditions, Northern Region, 1992 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Title: Bark beetle conditions, Northern Region, 1992 Author: United States. Forest Service. Northern Region, Oakes, Robert D., Gibson, K. E. (Kenneth E.) Close

• 6. [Article] Mountain pine beetle infestation in ponderosa pine on Crow/Northern Cheyenne Indian Reservations, Montana, 1984

  The mountain pine beetle infestation existing on the Crow Indian Reservation (IR) since the early 1970's, and later developing principally in the western portion of the Northern Cheyenne IR, continued ...

  Citation × Citation Citation Abstract Copy Title: Mountain pine beetle infestation in ponderosa pine on Crow/Northern Cheyenne Indian Reservations, Montana, 1984 Author: United States. Forest Service. Northern Region, McGregor, Mark D., Oakes, Robert D., Gibson, K. E. (Kenneth E.) The mountain pine beetle infestation existing on the Crow Indian Reservation (IR) since the early 1970's, and later developing principally in the western portion of the Northern Cheyenne IR, continued into 1984. Survey results indicate the infestation is still building on both Reservations. To help develop beetle management strategies appropriate for stands in eastern Montana, studies to demonstrate the effects of several partial-cut regimes have been initiated. That project and currently held management philosophies for mountain pine beetle in second-growth ponderosa pine are discussed. Title: Mountain pine beetle infestation in ponderosa pine on Crow/Northern Cheyenne Indian Reservations, Montana, 1984 Author: United States. Forest Service. Northern Region, McGregor, Mark D., Oakes, Robert D., Gibson, K. E. (Kenneth E.) The mountain pine beetle infestation existing on the Crow Indian Reservation (IR) since the early 1970's, and later developing principally in the western portion of the Northern Cheyenne IR, continued into 1984. Survey results indicate the infestation is still building on both Reservations. To help develop beetle management strategies appropriate for stands in eastern Montana, studies to demonstrate the effects of several partial-cut regimes have been initiated. That project and currently held management philosophies for mountain pine beetle in second-growth ponderosa pine are discussed. Close

• 7. [Article] Evaluation of Douglas-fir mortality from Douglas-fir beetle from 1982 through 1984 following MCH application

  A granular controlled release formulation of 2 percent MCH was applied at 4.48 kg/ha to 76.9 ha of uninfested, windthrown Douglas-fir by helicopter with a modified aerial spreader of 1.12 m capacity in ...

  Citation × Citation Citation Abstract Copy Title: Evaluation of Douglas-fir mortality from Douglas-fir beetle from 1982 through 1984 following MCH application Author: United States. Forest Service. Northern Region, Meyer, Hubert E., McGregor, Mark D., Oakes, Robert D. A granular controlled release formulation of 2 percent MCH was applied at 4.48 kg/ha to 76.9 ha of uninfested, windthrown Douglas-fir by helicopter with a modified aerial spreader of 1.12 m capacity in May 1982. Douglas-fir beetle population reduction was 96.4 percent by late June. With one exception, treated plots had no successful attacks through 1984. Successfully attacked trees in stands surrounding treated plots declined sharply by the second season. This may indicate MCH dispersed beetles over a wide area preventing the development of many epicenters. Mortality remained high in check areas and surrounding stands. In all areas surrounding treated blocks and check areas, the number of pitchouts increased and average diameter of successfully attacked trees declined with successive years of infestation. This pattern is indicative to that experienced following a beetle population buildup in windthrow in other areas. We recommend MCH be registered at 2 percent controlled release formulation for application to inaccessible windthrown trees, and to protect adjacent high-value stands. Title: Evaluation of Douglas-fir mortality from Douglas-fir beetle from 1982 through 1984 following MCH application Author: United States. Forest Service. Northern Region, Meyer, Hubert E., McGregor, Mark D., Oakes, Robert D. A granular controlled release formulation of 2 percent MCH was applied at 4.48 kg/ha to 76.9 ha of uninfested, windthrown Douglas-fir by helicopter with a modified aerial spreader of 1.12 m capacity in May 1982. Douglas-fir beetle population reduction was 96.4 percent by late June. With one exception, treated plots had no successful attacks through 1984. Successfully attacked trees in stands surrounding treated plots declined sharply by the second season. This may indicate MCH dispersed beetles over a wide area preventing the development of many epicenters. Mortality remained high in check areas and surrounding stands. In all areas surrounding treated blocks and check areas, the number of pitchouts increased and average diameter of successfully attacked trees declined with successive years of infestation. This pattern is indicative to that experienced following a beetle population buildup in windthrow in other areas. We recommend MCH be registered at 2 percent controlled release formulation for application to inaccessible windthrown trees, and to protect adjacent high-value stands. Close