Epyrifenacil, a new systemic PPO‐inhibiting herbicide for broad‐spectrum weed control

Abstract Epyrifenacil is a novel PPO‐inhibiting herbicide discovered and developed by Sumitomo Chemical. Epyrifenacil belongs to the pyrimidinedione chemical class and has a unique three‐ring structure. It is systemically active on a broad range of weeds including grass weeds and some target‐site‐based PPO‐inhibitor resistant broadleaf weeds. Its systemic action is mediated by a phloem movement of the active form of epyrifenacil. In addition, epyrifenacil's vapor action is sufficiently low to not cause an off‐target movement to nontarget sensitive crops. It is expected that epyrifenacil will contribute to global food production in the near future. © 2024 The Author(s). Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.