Steps for Effective Use of Foliar Fungicides to Control Diseases on Wheat
Fields planted to susceptible varieties are to be targeted for disease scouting and possible fungicide applications. Disease pressure on any particular variety varies according to location, local weather, and management practices. Some locations are prone to high disease pressure. Growers in these areas should be particularly aware of yield loss potential.
Wooster, Ohio, is a location with consistent pressure from powdery mildew and Stagonospora leaf blotch. Over the 10-year period from 1991 to 2000, the average yield response to fungicide application on susceptible varieties has been 10.4 bu/A. Updated information on wheat variety reactions to disease can be obtained on the Ohio Field Crop Disease web site at http:// www.oardc.ohio-state.edu/ohiofieldcropdisease.