A rigorous thatch control program will lessen symptoms associated with summer stress. Fall application of acidifying fertilizers such as ammonium sulfate or sulfur coated urea may modify the root zone pH enough to suppress infection. Irrigation at appropriate times in the summer will limit symptom expression in July and August. The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by the Purdue University Cooperative Extension Service is implied. Any person using products listed assumes full responsibility for their use in accordance with current direction of the manufacturer.
Information listed is valid only for the state of Indiana.