Enhancement of Twig Abscission in White Oak by Ethephon
- 1 December 1972
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Forest Research
- Vol. 2 (4) , 492-495
- https://doi.org/10.1139/x72-075
Abstract
Abscission of twigs from a mature Quercusalba L. was stimulated by 1 and 2% ethephon (2-chloroethylphosphonic acid) in lanolin applied to the base of twigs in the fall. The greatest stimulation resulted from treatment on September 11. Two percent ethephon enhanced twig abscission approximately 122%. The current shoot of abscised twigs was shorter than the current shoot of twigs retained on the tree, suggesting that the less vigorous twigs were shed. Twigs of juvenile trees did not abscise naturally and were not induced to abscise by ethephon.Keywords
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