Received for publication May 28, 1981. University of Florida Agricultural Experiment Station Journal Series No. 3105.
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Assistant Professor of Ornamental Horticulture, Professor of Entomology, and Assistant Professor of Plant Pathology, respectively. We thank B. J. Center for dedicated management of field plots and data collection, C. A. Lowery and G. H. Snyder for provision of testing sites, and A. E. Dudeck for establishment of the original plots on which preliminary screening of germplasm was based.