Entomology and Plant Pathology, Oklahoma State University
127 Noble Research Center, Stillwater, OK74078
Vol. 11, No. 27
May 14, 2012
Wheat Disease Update
Bob Hunger, Extension Wheat Pathologist
Not much different from around Oklahoma. Field days and trips during this past week to northern Oklahoma (Kildare north of Ponca City) and then west from there to Lahoma (15 miles west of Enid) showed that wheat was moving quickly to maturity. There was no (or only very little) green foliage left on any varieties. White heads and/or plants with a whitish cast were prevalent across northern Oklahoma, but only occasionally were symptoms of root rot found associated with these plants. Generally the bases of tillers, crowns, and roots were mostly creamy white in color. When a root rot was found, the symptoms were most typical of dryland root rot (Fig 1) with an occasional sharp eyespot (Fig 2).
Fig 1. Dryland root rot (healthy stem at top).