2015. Damaged MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle.
Damaged MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle.
More information about the damaged flakes from Connie Mehmel:
"The spreader that was used for application had been tested and calibrated with 10 kg of flakes in the hopper, and appeared to be working well. However, when 100 kg was loaded in the hopper for application the auger jammed, damaging the load. The flakes delaminated, as shown in this photo."
Photo by: Connie Mehmel
Date: May 11, 2015
Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Wenatchee Service Center.
Source: Connie Mehmel collection. Wenatchee, Washington.
For more information about MCH see:
Ross, Darrell W., Kenneth Edward Gibson, and Gary E. Daterman. 2015. Using MCH to protect trees and stands from Douglas-fir beetle infestation. Forest Health Technology Enterprise Team, US Department of Agriculture, Forest Service.
www.fs.fed.us/foresthealth/technology/pdfs/MCH_handbook_1...
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth
2015. Damaged MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle.
Damaged MCH flakes. MCH is an anti-aggregation pheromone used to protect trees from attack by the Douglas-fir beetle.
More information about the damaged flakes from Connie Mehmel:
"The spreader that was used for application had been tested and calibrated with 10 kg of flakes in the hopper, and appeared to be working well. However, when 100 kg was loaded in the hopper for application the auger jammed, damaging the load. The flakes delaminated, as shown in this photo."
Photo by: Connie Mehmel
Date: May 11, 2015
Photo credit: USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection, Wenatchee Service Center.
Source: Connie Mehmel collection. Wenatchee, Washington.
For more information about MCH see:
Ross, Darrell W., Kenneth Edward Gibson, and Gary E. Daterman. 2015. Using MCH to protect trees and stands from Douglas-fir beetle infestation. Forest Health Technology Enterprise Team, US Department of Agriculture, Forest Service.
www.fs.fed.us/foresthealth/technology/pdfs/MCH_handbook_1...
Image provided by USDA Forest Service, Region 6, State and Private Forestry, Forest Health Protection: www.fs.usda.gov/main/r6/forest-grasslandhealth