Amends the Harmonized Tariff Schedule of the United States to increase the duty on Mesotrione Technical - 1,3-cyclohexanedione,2-[4-(methylsulfonyl)-2-nitrobenzoyl]-1,3-cyclohexanedione from: (1) 6.04 percent to 6.08 percent through December 31, 2007; and (2) 6.08 percent to 6.11 percent through December 31, 2008.