Resistance of Watermelon Cultivars to Fusarium Wilt. G. W. Elmstrom, Professor of Horticulture, University of Florida, Agricultural Research Center, Leesburg 32748. D. L. Hopkins, Professor of Plant Pathology, University of Florida, Agricultural Research Center, Leesburg 32748. Plant Dis. 65:825-827. Accepted for publication 16 January 1981. Copyright 1981 American Phytopathological Society. DOI: 10.1094/PD-65-825.

Watermelon (Citrullus lanatus) cultivars were grown in field soil naturally infested with Fusarium oxysporum f. sp. niveum. Calhoun Gray, Smokylee, and Summit were highly resistant to Fusarium wilt and produced high yields when planted on land where watermelon had last been planted 6 yr before. Sweet Princess, Jubilee, Charleston 76, Klondike R7, and Summerfield were slightly resistant to wilt, and 11 cultivars were susceptible.