Evaluation of Peanut Cultivars for Resistance to Field Infection by Sclerotium rolfsii. W. D. Branch, Department of Agronomy, University of Georgia, Coastal Plain Experiment Station, Tifton 31793-0748. A. S. Csinos, Department of Plant Pathology, University of Georgia, Coastal Plain Experiment Station, Tifton 31793-0748. Plant Dis. 71:268-270. Accepted for publication 27 August 1986. Copyright 1987 The American Phytopathological Society. DOI: 10.1094/PD-71-0268.

During 1983–1985, field plot studies were conducted to evaluate the relative severity of Sclerotium rolfsii among 16 peanut (Arachis hypogaea) cultivars. The valencia market types were significantly more susceptible than spanish, runner, or virginia types. Toalson, Tifrun, Pronto, and Sunbelt Runner had the fewest disease loci, and Early Bunch, Tifrun, Sunbelt Runner, Florigiant, NC 7, and GK 3 had the highest yields. The identification of cultivars with both low disease incidence and high yield performance should be a beneficial approach for control of stem rot.