Symptoms are one or two broad yellow stripes that cover the length of the leaves and often down into the leaf sheaths. Apparently, the harsh winter favored root infection by this fungus. Jon also found some strawbreaker foot rot in Cowley County. Symptoms are dark lesions on the stem base, which later result in lodging. Last year strawbreaker was very serious in that area of the state, but I expect it to be uncommon this year because the stands were thinner and early spring weather was less favorable.
Loose smut is now easy to spot in some fields.
Symptoms are masses of black powdery spores that replace the flower parts. If infection is more than a trace, you probably need to buy some new certified seed or use a systemic seed treatment next year.