Skip to Main Content
Tree Defects: A Photo GuideAuthor(s): Alex L Shigo
Source: Gen. Tech. Rep. NE-82. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experimental Station. 167 p.
Publication Series: General Technical Report (GTR)
Station: Northeastern Research Station
PDF: View PDF (37.0 MB)
DescriptionThis guide shows, in 110 photos, how discoloration and decay form in trees. An expanded concept of tree decay is given. After wounding, trees form boundaries to resist the spread of pathogens. The boundary-setting defense process is called compartmentalization, and model of the process is CODIT. The expanded concept and the model are used to reexamine many other tree problems. Defects are major causes of low quality in trees. Use of the information in the guide can help foresters and urban foresters to grow healthier, higher-quality trees.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationShigo, Alex L. Tree Defects: A Photo Guide. Gen. Tee . Rep. NE-82. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station; 1983. 167 p.
KeywordsCompartmentalization, discolored and decayed wood, CODIT, pruning, tree care
- Compartmentalization today
- Tree decay an expanded concept
- Personal wilderness relationships: Building on a transactional approach
XML: View XML