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• 1. [Article] Observations of impact on the Nezperce National Forest caused by the Douglas-fir tussock moth

  Citation × Citation Citation Abstract Copy Title: Observations of impact on the Nezperce National Forest caused by the Douglas-fir tussock moth Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E., Ward, James D. Title: Observations of impact on the Nezperce National Forest caused by the Douglas-fir tussock moth Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E., Ward, James D. Close

• 2. [Article] Impact of spruce budworm on the Nezperce National Forest, Idaho, 1976

  Citation × Citation Citation Abstract Copy Title: Impact of spruce budworm on the Nezperce National Forest, Idaho, 1976 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E., Williams, Ralph E. Title: Impact of spruce budworm on the Nezperce National Forest, Idaho, 1976 Author: United States. Forest Service. Northern Region. State & Private Forestry, Bousfield, Wayne E., Williams, Ralph E. Close

• 3. [Article] Observations on the impact of western spruce budworm on the Nezperce National Forest, Idaho, 1972

  Aerial surveys of the Nezperce National Forest in Idaho revealed 138,692 acres of aerially visible top kill and tree mortality due to repeated defoliation by western spruce budworm, Choristoneura occidentalis ...

  Citation × Citation Citation Abstract Copy Title: Observations on the impact of western spruce budworm on the Nezperce National Forest, Idaho, 1972 Author: United States. Forest Service. Northern Region. State & Private Forestry, Ciesla, William M., Lood, Rudolph C., Bousfield, Wayne E. Aerial surveys of the Nezperce National Forest in Idaho revealed 138,692 acres of aerially visible top kill and tree mortality due to repeated defoliation by western spruce budworm, Choristoneura occidentalis Freeman. A small ground sample indicates that up to 47 percent of the grand fir volume was affected by top kill in some areas. True firs were most severely affected by repeated defoliation, and Engelmann spruce was intermediately affected. No top kill or tree mortality was observed on Douglas-fir. Title: Observations on the impact of western spruce budworm on the Nezperce National Forest, Idaho, 1972 Author: United States. Forest Service. Northern Region. State & Private Forestry, Ciesla, William M., Lood, Rudolph C., Bousfield, Wayne E. Aerial surveys of the Nezperce National Forest in Idaho revealed 138,692 acres of aerially visible top kill and tree mortality due to repeated defoliation by western spruce budworm, Choristoneura occidentalis Freeman. A small ground sample indicates that up to 47 percent of the grand fir volume was affected by top kill in some areas. True firs were most severely affected by repeated defoliation, and Engelmann spruce was intermediately affected. No top kill or tree mortality was observed on Douglas-fir. Close