The present invention relates to a turf herbicide comprising, as an active ingredient, of 5-benzyloxymethyl-1,2-isoxazoline derivatives of formula (I), which have been known as an a rice paddy herbicide. In addition, 5-benzyloxymethyl-1,2-isoxazoline derivatives of the present invention have a high activity not only as a turf herbicide but also as a herbicide for upland crops and direct-seeded rice. As such, the derivatives of the present invention can be used either as an upland herbicide or as a herbicide for direct-seeded paddy field rice.