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Title: Photographic guide to selected external defect indicators and associated internal defects in black walnut
Author: Rast, Everette D.Beaton John A.; Sonderman, David L.; Sonderman, David L.
Source: Res. Pap. NE-617. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 24 p.
Description: To properly classify qr grade logs or trees, one must be able to correctly identify defect indicators and assess the effect of the underlying defect on possible end products. This guide aids the individual in identifying the surface defect indicator and also shows the progressive stages of the defect throughout its develqpment for black walnut. It illustrates and describes 10 types of external defqct indicators and associated defects that are particularly difficult to evaluate.
Keywords: Defect identification, photo guide, black walnut, quality assessment
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Rast, Everette D.Beaton John A.; Sonderman, David L. 1988. Photographic guide to selected external defect indicators and associated internal defects in black walnut. Res. Pap. NE-617. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 24 p.
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