John A. BardenDepartment of Horticulture, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061
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David C. Ferree
David C. FerreeDepartment of Horticulture, Ohio Agricultural Research and Development Center, Wooster, OH 44691
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Contributor Notes
Received for publication December 23, 1978.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper must therefore be hereby marked advertisement solely to indicate this fact.