BALANCE Herbicide (Isoxaflutole) is a pre-emergent herbicide for the control of grass and broad-leaf weed species in corn. This product was first conditionally registered in September 1998, which allowed commercial introduction for the 1999-growing season. As a condition of the registration, the US Environmental Protection Agency (EPA) required the registrant, AVENTIS, to conduct studies to better define the risks posed by isoxaflutole to non-target plants and crops. The primary concern is the phyto-toxicity of isoxaflutole and its degradate (RPA 202248) and potential contamination of water resources. Data from these studies were used by EPA to render a registration decision in November 2001. Based on the information at hand, EPA decided in November 2001 to extend the conditional registration of isoxaflutole for an additional 3 years to allow additional time for review.