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Effects of Foliar Applications of a Benomyl-Oil-Water Emulsion on the Epidemiology of Cercospora Leaf Spot on Peanuts. D. H. Smith, Assistant Professor, Department of Plant Pathology, University of Georgia, College of Agriculture Experiment Stations, Georgia Station, Experiment 30212; F. L. Crosby, Agricultural Meteorologist, NOAA, National Weather Service, Georgia Station, Experiment 30212. Phytopathology 62:1029-1031. Accepted for publication 29 March 1972. DOI: 10.1094/Phyto-62-1029.

Foliar applications of a benomyl-oil-water emulsion suppressed the development of peanut leaf spot epidemics more effectively than foliar applications of a benomyl-water suspension. Foliar applications of an oil-water emulsion were ineffective. The benomyl-oil-water emulsion treatment delayed the progress of the epidemic by arresting development of established lesions induced by Cercospora arachidicola, suppressing sporulation of C. arachidicola on peanut leaflets, and reducing the rate of peanut leaflet abscission.

Additional keywords: sporulation, systemic fungicide, synergism.