White pine with branch flagging and crown dieback due to blister rust. IUFRO 3rd International Conference on Rusts of Forest Trees. Lake Tahoe, California. Photo by: Richard Sniezko Date: July 12, 2006 Credit: USDA Forest Service, Region 6, Umpqua National Forest, Dorena Genetic Resource Center. Source: DRGC digital photo collection; courtesy Richard Sniezko, Cottage Grove, Oregon. Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:...
Topics: crowndieback, internationalunionofforestresearchorganizations, r6, usda, stateandprivateforestry,...