Current Articles
Browse Archives
Contact Us
AUF Home
ISA Seal
Get Acrobat Reader

Arboriculture & Urban Forestry Online
Volume 21, Issue 5 — September 1995

Validation of a Tree Failure Evaluation System    (View PDF)

Gary W. Hickman, Ed Perry, and Richard Evans

Abstract: In 1987, 695 oak trees, Quercus lobata and O. wizlizeniiwere evaluated using a nine-component rating system. In 1994, the trees were reevaluated to validate the original system in predicting tree failure. Analysis of the results showed that 3 components [decline (vigor), trunk condition and lean] correctly predicted subsequent tree failure or survival. Decline, a relative measure of leaf cover and color, was the most important factor in predicting total tree failure.


Current Articles | Browse Archives | Search | AUF Home | ISA Home | Get Acrobat