This regulation establishes tolerances for residues of glufosinate in or on tropical and subtropical, medium to large fruit, edible peel, subgroup 23B; tropical and subtropical, medium to large fruit, smooth, inedible peel, subgroup 24B; and tropical and subtropical, small fruit, inedible peel, subgroup 24A. The regulation also establishes tolerances with regional registrations in or on grass, forage and grass, hay. The Interregional Project Number 4 (IR-4) requested these tolerances under the Federal Food, Drug, and Cosmetic Act (FFDCA).