Former Graduate Research Assistant. Present address: Department of Horticultural Science, North Carolina State University, Raleigh, NC 27650.
Associate Professor of Horticulture.
Received for publication November 26, 1982. Published with the approval of the Director of the Clemson University Agricultural Experiment Station as Technical Contribution No. 2113. The authors gratefully acknowledge the assistance of J.B. Jones, Jr. and F.A. Pokomy, of the University of Georgia, Dept. of Horticulture, in the execution of many of the analyses presented in this paper. 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.