Evaluation of Seed and Foliar Fungicides for Control of Karnal Bunt of Wheat. J. L. Smilanick, Research Associate, U.S. Department of Agriculture, Agricultural Research Service, Crops Research Laboratory, Logan, UT 84322-6300. J. A. Hoffmann, N. L. Cashion, and J. M. Prescott. Research Plant Pathologist, Postdoctoral Research Associate, Seed Health Pathologist, U.S. Department of Agriculture, Agricultural Research Service, Crops Research Laboratory, Logan, UT 84322-6300, International Center for the Improvement of Maize and Wheat, Lisboa 27, Apdo. Postal 6-641, Mexico 06600 DF. Plant Dis. 71:94-96. Accepted for publication 1 July 1986. 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, 1987. DOI: 10.1094/PD-71-0094.

Eight seed-applied and 16 foliar-applied fungicides were evaluated for control of Karnal bunt of wheat. Control (>80%) was obtained with two applications of either propiconazole or etaconazole or four applications of mancozeb or copper hydroxide when these fungicides were applied to wheat plants at Feeke's growth stage 10.0—10.5. Best control by propiconazole and etaconazole was obtained when they were applied 72 hr after inoculation rather than before inoculation. None of the systemic fungicides applied to seed reduced Karnal bunt infection.