girdling pines

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Originally posted by John Paul Sanborn
over 30% loss of cylinder strength is concidered to be critical in a hollow tree, maybe 20 inches and over would be better.

30% shows up at 12.2 inches. You probably wouldn't need to girdle something that small anyways. The tree would likely be on the ground before there was a significant amount of sap flow anyways.

TT
 
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