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Proceedings of Past Forest Nursery Association Meetings:

Xylem Cavitation: An Indication of Moisture Stress in Newly Planted Western Hemlock Seedling
Kathleen L. Kavanagh
1991: Park City, UT
Xylem cavitation occurs when water
potentials reach a level great enough to introduce
air into the water conducting system. Cavitation
events in western hemlock were found to begin at
-1.9MPa and reach very high levels at -3.4MPa. The
best place to monitor cavitation events was the
base of the seedling stem.
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