Ohio State University
Little data is available for stem rust control with fungicides since it has been so well controlled with resistant varieties. However, the assumption could be made that performance against leaf rust and stripe rust offer the best proxy for stem rust that is available at this time. Studies are underway to gather up-to-date data for stem rust control."
http://www.oardc.ohio-state.edu/ohiofieldcropdisease/wheat/OFCDwheatfungicides.pdf