1Received for publication December 11. 1980. Contribution no. 337-E, 1980 series.
The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.
1018 Duke Street
Alexandria, VA 22314
© 2018-2023 American Society for Horticultural Science
Character limit 500/500