This regulation establishes a tolerance for residues of 2,4- dichlorophenoxyacetic acid (2,4-D) in or on hop, soybean, and wild rice . Interregional Research Project Number 4 (IR-4) and the Industry Task Force II on 2,4-D Research Data (Task Force) and its registrant members and affiliates on behalf of IR-4 requested this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA), as amended by the Food Quality Protection Act of 1996 (FQPA).