1960. William Klein checking control effectiveness in ponderosa pine tree sprayed with ethylene dibromide to control mountain pine beetle (Dendroctonus monticolae). Bauer's Creek area. Fremont National Forest, Oregon.
William Klein checking control effectiveness in ponderosa pine tree sprayed with ethylene dibromide to control mountain pine beetle (Dendroctonus monticolae). Bauer's Creek area. Fremont National Forest, Oregon.
Photo by: Ken H. Wright
Date: June 17, 1960
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection.
Collection: Portland Station Collection; La Grande, Oregon.
Image: PS-3042
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: wfiwc.org/content/history-and-resources
Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
1960. William Klein checking control effectiveness in ponderosa pine tree sprayed with ethylene dibromide to control mountain pine beetle (Dendroctonus monticolae). Bauer's Creek area. Fremont National Forest, Oregon.
William Klein checking control effectiveness in ponderosa pine tree sprayed with ethylene dibromide to control mountain pine beetle (Dendroctonus monticolae). Bauer's Creek area. Fremont National Forest, Oregon.
Photo by: Ken H. Wright
Date: June 17, 1960
Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection.
Collection: Portland Station Collection; La Grande, Oregon.
Image: PS-3042
For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: wfiwc.org/content/history-and-resources
Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth