Asociate Professor, Mountain Horticultural Crops Research and Extension Center, Fletcher, NC 28732-9216.
Received for publication 2 Apr. 1987. Paper no. 10946 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh, NC 27695-7601. Research supported in part by a grant from the North Carolina Tomato Growers Assn. 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.