US tolerance for fluridone on cotton
The US EPA has established a temporary tolerance for the established herbicide, fluridone, on cotton until December 31st 2014. It is associated with an emergency exemption request for use of the herbicide to control glyphosate-resistant Palmer amaranth ( Amaranthus palmeri) in Arkansas. It is the worst weed problem in the state and is expected to result in significant economic losses on 160,000 acres (64,750 ha), or nearly 25% of the cotton grown in the state. This was the first emergency exemption request for fluridone on cotton. Fluridone is known as an aquatic herbicide. The EPA listed its registrants as Sepro and Kerley Trading when the herbicide entered the registration review process in 2009 ( Agrow No 577, p 19).