Soaking Duke variety avocado seeds in high concentrations of gibberellic acid for 24 hours prior to planting increased the rate of germination, seedling height, and stem diameter.

A. H. Krezdorn, Chairman, Department of Fruit Crops, University of Florida, Gainesville, assisted with helpful suggestions on this project; W. A. Thorn, Orchard Management Service, Eadington Fruit Company, Fallbrook (formerly Laboratory Technician. Department of Plant Pathology, U.C. Riverside), and W. H. Brokaw, Avocado and Citrus Nursery-man, Ventura, assisted with growing the plants; and T. A. Little, Extension Biometrician, University of California, Riverside, provided statistical advice.