A MULTI-STATE APPROACH TO ADVANCE INTEGRATED MANAGEMENT TOOLS TO MINIMIZE DISEASE LOSS FROM TAR SPOT ON CORN

Research Objective 1) Evaluate the success of a tar spot integrated management plan that includes resistant hybrids, fungicide application, and timing (based on an advisory tool).Hypothesis: An integrated tar spot management scheme will be more effective than relying on just one individual tar spot management technique. Research Objective 2) Develop an improved understanding of the epidemiology of Phyllachora maydis on corn in the Midwest U.S.Hypothesis 1: Local sources of inoculum are the primary source of initial inoculum.Hypothesis 2: Leaf wetness plays a critical role in tar spot development. Hypothesis 3: Air temperature will influence the initial infection of tar spot. Extension Objective 3) Develop an innovative digital suite of Extension tools and offer hands-on training in tar spot identification and management that includes factsheets, webinars, and web-based content published with the Crop Protection Network; and an image database, PowerPoint slide decks, and videos that Extension and industry can use to share with growers about best management practices.