Using Ethephon for Seedhead Suppression of ‘Innovation’ Zoysiagrass

The performance of ethephon (Proxy) on seedhead suppression of 'Innovation' zoysiagrass was evaluated during the 2019-2020 growing season in Manhattan, KS.Treatments evaluated Proxy applied in a single autumn application at 5 fl.oz./1,000 ft 2 on multiple dates between August 28 and November 26, 2019.Seedhead suppression ranged from 15% (application on November 1) to 82% (applied on September 4).Dates between September 4 and October 3 were the optimum application window for ethephon application on Innovation zoysiagrass as seedhead suppression was at least 62% with minimal turf injury occurring.