Herbicidal formulations comprising (A) mesotrione (2-[4-methlysulfonyl-2-nitrobenzoyl]-1,3-cyclohexanedione), (B) about 0.3 to about 2.5 percent of crop oil concentrate or about 0.3 to about 2.5 percent of methylated seed oil, on a volume to volume basis, based on the total of (A), (B), (C) and (D), (C) about 0.5 to about 5 % of a urea ammonium nitrate on a volume to volume basis, based on the total of (A), (B), (C) and (D), or about 0.5 to 5 % based on dry weight, of ammonium sulphate fertilizer, based on the total weight of (A), (B), (C) and (D), and (D) a diluent.