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Rooting Black Walnut Cuttings with Ethephon

Black walnut (Juglans nigra L.) has been propagated by budding, grafting, and layering. In addition, several investigators have successfully rooted cuttings with indolebutyric acid (1,2), but these studies utilized juvenile wood of etiolated or adventitious origin. Rooting of adult wood is more difficult. However, recent results indicate that Ethephon (2-chloroethyl phosphonic acid) can be used successfully to root cuttings of adult wood from mature trees. This study reports on the successful use of Ethephon to root adult wood from mature black walnut trees.

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Author(s): Stanley B. Carpenter

Publication: Tree Planters' Notes - Volume 26, Number 3 (1975)

Volume: 26

Number: 3