Surviving western white pine at Grass Creek trial site planted in about 1971. Rustbusters 2003 field trip. Umpqua National Forest, Oregon.
For more about the Grass Creek test site see:
Sniezko, R. A., Kinloch Jr, B. B., Bower, A. D., Danchok, R. S., Linn, J. M., & Kegley, A. J. (2004). Field resistance to Cronartium ribicola in full-sib families of Pinus monticola in Oregon. Breeding and genetic resources of five-needle pines: growth, adaptability, and pest resistance. USDA Forest Service Proceedings. RMRS-P-32. 243-249.
www.researchgate.net/publication/237455453_Field_Resistan... Photo courtesy of: Richard Sniezko
Date: August 2003
Credit: USDA Forest Service, Region 6, Dorena Genetic Resource Center.
Source: DRGC online photo collection:
www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Dorena Genetic Resource Center (DGRC) is the USDA Forest Service's regional service center for genetics in the Pacific Northwest Region. Dorena houses disease resistance breeding programs for five-needled pines and Port-Orford-cedar, a native plant development program, and the National Tree Climbing Program. For additional photos of the DGRC program, see:
www.fs.usda.gov/detail/r6/landmanagement/resourcemanageme... Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
