Chemical Seed Treatments for Controlling Seedborne and Soilborne Common Bunt of Wheat. J. A. Hoffmann, Research Plant Pathologist, AR, SEA, USDA, Utah State University, Logan 84322. J. T. Waldher, Agricultural Research Technician, AR, SEA, USDA, Washington State University, Pullman 99164. Plant Dis. 65:256-259. . This article is in the public domain and not copyrightable. It may be freely reprinted with customary crediting of the source. The American Phytopathological Society, 1981. DOI: 10.1094/PD-65-256.

During a 10-yr period (1969–1978), 51 different chemical formulations were tested as seed treatments for the control of seedborne and soilborne common bunt of wheat. Formulations that controlled both seedborne and soilborne bunt at practical rates were those that contained carboxin, CGA-64251, fenapanil, hexachlorobenzene, methfuroxam, nuarimol, pentachloro-nitrobenzene (PCNB), thiabendazoles, triadimefon, or triadimenol. Formulations containing benomyl, chloroneb, fuberidazole, maneb, pyracarbolid, TCMTB, or zinc ion–maneb complex were effective against seedborne but not soilborne bunt. CGA-64251, methfuroxam, and triadimenol appear to be more potent against bunt than hexachlorobenzene.

Keyword(s): fungicides, Tilletia caries.