Fungicide use on hybrid corn has increased considerably in the past two growing seasons primarily due to of reports of increased yields, even in the absence of disease and higher corn prices. The objectives of this project were to 1) assess the effect of foliar fungicide application on foliar disease development on hybrid corn, 2) assess the effect of foliar fungicide application on stalk rot, and 3) to evaluate the yield response of hybrid corn to foliar fungicide application.