A Note On Effects of Wounds On Heartwood Formation in White Oak (Quercus ALBA L.)

E. Allen McGinnes, Alex L. Shigo

Abstract


Heartwood formation was retarded by wounds on white oaks in Maine and Missouri. Maine samples with fire wounds had 22-23 rings of sapwood near the wound whereas control trees had 9. Missouri samples subjected to frill and herbicide treatments averaged 16-17 rings of sapwood near the wound, whereas control trees averaged 12. The effects of wounding on Missouri trees were pronounced at heights of 1, 2.5, and 6 m.

Keywords


Wounding;sapwood;heartwood;fire wounds

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