Title

Cambial electrical resistance does not assess vitality of individual sweetgum trees

Document Type

Article

Journal/Book Title/Conference

Journal of Arboriculture

Volume

18

Issue

1

Publisher

International Society of Arboriculture

Publication Date

1-1-1992

First Page

1

Last Page

5

Abstract

Cambial electrical resistance (CER) was assessed over a year-long period, using the Shigometer, for 109 sweetgum trees (Liquidambarstyraciflua) planted along streets in Seattle, Washington. CER decreased through the spring, reached a minimum in summer, increased through the fall and was maximal in mid-winter. The seasonal maximum was 200-600% greater than the summer minimum. CER measurements could not be related to growth parameters such as seasonal shoot increment and diameter growth.

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