Received for publication July 24, 1981. Florida Agricultural Experiment Station Journal Series No. 3176. The research was supported in part by a grant from Speedling Inc., Sun City, Fla. The authors gratefully acknowledge the cooperation of M. V. Crow and Mrs. S. J. Ciampi of the Florida Division of Forestry, Herren Nursery, Lake Placid, Fla., in applying the sand pelleting techniques.
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.
On a sabbatical leave from the Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel.