It is intended to provide a novel herbicidal composition and a weedkilling method. The present invention provides a herbicidal composition containing at least one compound represented by the formula (1): and at least one compound selected from compound group B consisting of dimethametryn and metazosulfuron. The present invention also provides a weedkilling method comprising performing simultaneous or short-time-interval treatments with at least one compound represented by the formula (1) and at least one compound selected from the compound group B.本發明意欲提供一種新穎除草性組成物及殺雜草方法。本發明提供一種除草性組成物，其含有至少一種以式(1)代表的化合物：及至少一種選自由地美沙美曲(dimethametryn)和滅磺隆(metazosulfuron)所組成的化合物群組B之化合物。本發明亦提供一種殺雜草方法，其包含以至少一種以式(1)代表的化合物及至少一種選自化合物群組B之化合物同時或在短的時間間隔內進行處理。
