Feral rye control brought to you by CoAXium® Wheat Production System driven by Aggressor® herbicide. Natural Feral rye population treated with 10 oz/acre of Aggressor herbicide. There is a new tool for feral rye (cereal rye) control in winter wheat. Providing growers with Cleaner fields. Higher yields. Feral Rye (cereal Rye) control study conducted in Ritzville, WA.