Winter wheat production in Wisconsin either for seed or for grain requires careful management in order to be profitable. Seed, soil and air borne diseases of wheat can cause significant yield reductions if not managed properly. Weather conditions, quality of seed, cultural practices, and levels of disease inoculum all affect the levels of disease pressure in any given year. Wisconsin climate and soil types make wheat very prone to many seedling root , foliar, and head diseases. In addition, many winter wheat varieties lack significant resistance to common diseases.