IMPACT CORE® is a postemergence corn herbicide that controls grass and broadleaf weeds with punishing takedown and lasting residual. IMPACT CORE combines the active ingredient in Impact® Herbicide with an industry-leading level of acetochlor to deliver the takedown power you need to control your toughest weeds and grasses. It is Strong to the Core™ and has trusted takedown of herbicide-resistant* grasses and broadleaf weeds such as waterhemp, Palmer amaranth and giant ragweed. [See IMPACT CORE video, field performance, and testimonials.]