Since no variety is resistant to all pests, producers can reduce risks by picking several different varieties with different strengths and weaknesses against pests. In that way, it is less likely for a whole farm to be devastated by one disease or insect problem. Resistance ratings were obtained from visual field evaluations and greenhouse tests by public and private wheat researchers. Attempts have been made to confirm each rating, but ratings cannot be guaranteed error-free. Resistance ratings may vary with observer, weather, and pest populations.
Some pests cause considerably more yield loss than others.
Also, different pests are prevalent in different parts of the state. Therefore, the priority placed on different kinds of pest resistance will vary. Following is a brief description of several important diseases. SBM is prevalent in the eastern half of the state, especially in the wetter areas of fields. Yield losses in susceptible varieties often exceed 50 percent.