Logging Pacific silver fir killed or damaged by balsam woolly adelgid. St. Helen's Tree Farm, Washington.

Photo by: Ken H. Wright Date: 1960

Credit: USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection. Collection: Portland Station Collection; La Grande, Oregon. Image: PS-3096

For more, see The Balsam Woolly Aphid Problem in Oregon and Washington, Research Paper Number 18. 1957. Pacific Northwest Forest and Range Experiment Station. Portland, Oregon: <a href="https://www.fs.fed.us/pnw/pubs/pnw_os_rp-18.pdf" rel="nofollow">www.fs.fed.us/pnw/pubs/pnw_os_rp-18.pdf</a>

For additional historic forest entomology photos, stories, and resources see the Western Forest Insect Work Conference site: <a href="http://wfiwc.org/content/history-and-resources" rel="nofollow">wfiwc.org/content/history-and-resources</a>

Image provided by USDA Forest Service, Pacific Northwest Region, State and Private Forestry, Forest Health Protection: <a href="http://www.fs.usda.gov/main/r6/forest-grasslandhealth" rel="nofollow">www.fs.usda.gov/main/r6/forest-grasslandhealth</a>

This image or file is a work of a United States Department of Agriculture employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain. English ∙ español ∙ Nederlands ∙ slovenščina ∙ Tiếng Việt ∙ македонски ∙ русский ∙ українська ∙ 日本語 ∙ +/−