Submitted to: Wheat Newsletter
Publication Type: Other
Publication Acceptance Date: 4/1/2005
Publication Date: 5/1/2005
Citation: Long, D.L., Kolmer, J.A., Jin, Y., Hughes, M.E., Wanschura, L.A. 2005. Wheat rusts in the United States in 2004. Annual Wheat Newsletter. 51:211-220. Interpretive Summary:
Technical Abstract: Stem rust caused little damage to wheat in the U.S. in 2004. Wheat leaf rust caused an estimated loss of 30 million bushels of wheat in the U.S. in 2004. Losses to leaf rust were 4.7% in Texas and 1.0% total for winter wheat and 10.0% for spring wheat in Minnesota and 1.9% total for spring wheat. This year leaf rust was severe and concentrated in the Upper Midwest. Wheat stripe rust was common in the Pacific Northwest in 2004; it caused 3.0% loss in Oregon with lower losses in adjoining states. Stem rust race OFCS, the predominant race found in the Great Plains the past few years, was again the predominant race identified in 2004. Wheat leaf rust race MCRK was the most common race in the Southeast, and races MBDS and MCDS were most common in the Great Plains. The most common races identified in the Northern wheat growing area were T- races. At the same time there was an increase in the number of K-races.