VIEW ARTICLE

Effects of Diphenamid on Rhizoctonia solani, Pythium aphanidermatum, and Damping-off of Tomato. A. W. Cole, Professor of Weed Science, Department of Plant Pathology and Weed Science, Mississippi Agricultural and Forestry Experiment Station, Mississippi State 39762; W. E. Batson, Assistant Professor of Plant Pathology, Department of Plant Pathology and Weed Science, Mississippi Agricultural and Forestry Experiment Station, Mississippi State 39762. Phytopathology 65:431-434. Accepted for publication 28 October 1974. DOI: 10.1094/Phyto-65-431.

Diphenamid (N,N-dimethyl-2,2-diphenylacetamide) reduced the growth of Rhizoctonia solani and Pythium aphanidermatum on artificial media, delayed the emergence of tomato seedlings from sterile soil without significantly reducing the final stand, and decreased the incidence of pre-emergence damping-off in soil artificially infested with R. solani and/or P. aphanidermatum. Although postemergence damping-off increased in infested soil with the high rate of diphenamid, final stands were significantly higher than in infested soil not treated with diphenamid.