A Key for the Forest Service Hardwood Tree Grades

Gary W. Miller, Leland F. Hanks, Harry V. Wiant
1986 Northern Journal of Applied Forestry  
A dichotomous key organizes the USDA Forest Service hardwood tree grade specifications into a stepwise procedure for those learning to grade hardwood sawtimber. The key addresses the major grade factors, tree size, surface characteristics, and allowable cull deductions in a series of paired choices that lead the user to a decision regarding tree grade. Subtle grading rules, previously presented as footnotes to the major specifications, are included in the key. It simplifies the process so that
more » ... he process so that the beginner can learn the system quickly, without detailed instruction from experienced tree traders. North. J. Appl. For. 3:19-22, Mar. 1986.
doi:10.1093/njaf/3.1.19 fatcat:j3hsc2vkmjgnja3grgff45sc5e