This collection contains 24 annual White Pine Blister Rust surveys and accomplishment reports dated 1940 to 1966. The reports cover research in U. S. National Parks in the Northwestern Region, primarily Mount Rainier, Glacier, Yellowstone, and Rocky Mountain National Park, and were digitized at the request of Colorado State University professor emeritus of forest and shade tree pathology William R. Jacobi (born 1951) in 2016. White pine blister rust (Cronartium ribicola) kills five-needle pines such as western white pine, sugar pine, whitebark pine, and limber pine; mountain pine beetles are attracted to infected older trees.

Recent Submissions

View more