AROS (Armillaria ostoyae) Crew. Left-to-right: Greg Filip, Paul Deignan, Mike Simpson, Brent Oblinger, and Helen Maffei. Klamath Ranger District, Fremont-Winema National Forest, Oregon.
Additional information from Helen Maffei: "This pic is our latest re-measurement of AROS (an Armillaria root disease study near Klamath Falls). This study examined whether the fir component fared better in Armillaria infected stands when the stand was managed (thinning) to relieve stress. As it turned out management had very little effect on the progression of Armillaria root disease."
For more about the project see:
ucanr.edu/sites/PTIPS/AROS_Root_Disease/ See also: Filip, G. M.; H. M. Maffei; K. L. Chadwick; T. A. Max, 2010: Armillaria Root Disease-Caused Tree Mortality following Silvicultural Treatments (Shelterwood or Group Selection) in an Oregon Mixed-Conifer Forest: Insights from a 10-Year Case Study. Western Journal of Applied Forestry, 25, 136-143.
Photo by: Josh Bronson
Date: July 23, 2015
Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Central Oregon Service Center.
Source: Josh Bronson collection.
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection:
www.fs.usda.gov/main/r6/forest-grasslandhealth
