Bonus‐S‐metsulfuron induced more injury as rate increased than any other treatment across all locations. Treatments included: non‐treated, Turf Builder Southern (32‐0‐10), Bonus‐S fertilizer (32‐0‐9), Manor (60% WDG), granular metsulfuron on Biodac, Bonus‐S‐metsulfuron, and Bonus‐S‐atrazine applied at rates ranging from one to eight times the labeled rate. Field research was conducted at Auburn University, Clemson University, University of Florida, University of Georgia, and H&H Sod Company in St. To understand the observed injury, the objectives of this research were (i) to correlate combination of nitrogen fertilization and metsulfuron with excessive injury to centipedegrass (Eremochloa ophiuroides Hack.) and (ii) to determine how simultaneous high nitrogen fertilizer and excessive metsulfuron exacerbated the observed injury. However, homeowners complaints of high turfgrass injury were reported following application of the metsulfuron product formulation. Bonus‐S granular fertilizer with metsulfuron (Bonus‐S‐metsulfuron) was a new product meant to replace atrazine in the product. Bonus‐S granular fertilizer with herbicide atrazine (Bonus‐S‐atrazine) is a product sold by Scott's Miracle Gro Company (SMG) for the homeowner consumer market.
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