Western Washington Swiss needle cast (SNC) aerial survey. Symptomatic plantation - lighter colored young Douglas-fir with a brownish tinge. In this photo the Douglas-fir are mixed with alder (light green trees in the bottom of the drainages), which are not a host of SNC.
For more information about the 2018 western Washington Swiss needle cast survey, see:
arcg.is/0mvz4W For more information about Swiss needle cast, see:
sncc.forestry.oregonstate.edu/ Photo by: Justin Hof
Date: May 14, 2018
Credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection.
Source: Aerial Survey Program collection.
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
