Decay losses associated with wounds in commercially thinned true fir stands in northern California.

Abstract

A total of 562 white firs (Abies concolor (Gord. & Glend.) Lindl. ex Hildebr.) and red firs (A. magnifica A. Murr.) with logging wounds were felled, dissected, and analyzed for infection and decay in 28 commercially thinned stands on the Klamath and Tahoe National Forests in California. On the Klamath National Forest, decay losses associated with wounds were 1.2 and 5.7 percent of the gross merchantable cubic-foot volume and Scribner board-foot volume, respectively; on the Tahoe National Forest, these volumes were 1.7 and 7.6 percent. Wound area and age were most closely related to extent of decay. Volumes are given in cubic and board feet of decay for wounds of various sizes and ages.

Citation

Aho, Paul E.; Fiddler, Gary; Filip, Gregory M. 1989. Decay losses associated with wounds in commercially thinned true fir stands in northern California. Res. Pap. PNW-RP-403. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 8 p