Associate Professor. Present address: USDA/ARS, Appalachian Fruit Research Station, Route 2 Box 45, Kearneysville, WV 25430.
Received for publication August 30, 1982. The author gratefully acknowledges the assistance of Glenn O. Ware, Georgia Experiment Station Statistician, and Gary Lightner, Computer Programmer, USDA, Appalachian Fruit Research Station, in providing statistical analysis of the data. 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.