Group 2 (ALS) resistant downy brome continues to reduce yields and quality across key wheat growing regions in the US. Group 2 (ALS) resistant downy brome grass is controlled by Aggressor™ herbicide @ 8 oz/acre on left. A Group 2 herbicide was applied on the right @ 2 oz/acre. A key best management practice when using CoAXium™ Wheat Production System and Aggressor™ herbicide is to rotate herbicide modes of action that have activity on downy brome grass. When using Aggressor™ herbicide (Group 1) for controlling downy brome grass, using alternate modes of actions from Group 2 or Group 15 will be critical in prolonging the utility and performance of the CoAXium™ Wheat Production System. Walla Walla, WA.