METHYL-BROMIDE FUMIGATION TO CONTROL NONMICROBIAL DISCOLORATIONS IN WESTERN HEMLOCK AND RED ALDER

Methyl bromide fumigation was investigated as a means to control disco lorations in red alder and western hemlock. Freshly sawn red alder and western hemlock logs were fumigated in a commercial pest control faci lity. Discolorations were monitored in the logs and in lumber produced from both fumigated and control logs over 2 weeks. Methyl bromide fum igation prevented discolorations in red alder under drying conditions but discoloration of western hemlock was not prevented in freshly fell ed log sections or in lumber with existing endstain.