"symplastless" wrote in message
. ..
Does anyone have any experience with the SHIGOMETER? With respect to CER.
If so, what are your thoughts on the CER mean for Mountain Laurel? Did
you notice something different about mountain laurel?

I have used SHIGOMETRY to detect woody root declines in trees.

SDTDC did not test the Shigometer, but extensive research has been
conducted concerning its uses and limitations. It is agreed that the
Shigometer is a valuable tool for determining the current vigor of trees and
forests (cambium testing), but since resistance changes begin prior to
damage caused by decay (xylem testing), the Shigometer technique for decay
detection requires careful application and interpretation. Basic biological
knowledge of the material being evaluated is essential. Skill in instrument
use increases with greater awareness of local biological principles and
practice with the instrument. --

Since you have never studied biology, this pretty much leaves you out.

By the way, do you own a Shigometer?

Sincerely,
John A. Keslick, Jr.
Consulting Forester & Tree Expert
http://home.ccil.org/~treeman
and www.treedictionary.com
Beware of so-called tree experts who do not understand tree biology.
Storms, fires, floods, earthquakes, and volcanic eruptions keep reminding
us that we are not the boss.