VThite fir A grandis 



This diagram shows the 

 percent of Lumber lost 

 in white fir on ail 

 sites except white pine 

 Sites I and II, and in 

 over-mature timber on 

 these good white pine 

 sites, with regard to 

 the fungus E. tinctorium. 



25% 25% 50% 75% 75% 75% 100% 100% 



defect (lumber) 



1. If conk is on first log, cut 507o of tree volume. 



2. If conk is on second or third log, cut 75% of tree volume. 



3. If conk is on both second and third log, deduct 100%. 



4. Rot extends 1 log below first visible conk and 1 log above 

 last visible conk. 



The above rules also apply to subalplne fir and western hemlock . 



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