in order to reduce the environmental load on an area where a herbicide is applied or a surrounding area thereof more than ever , it has been required to improve activity of a herbicidal active ingredient and to reduce its dose as far as possible . a herbicidal composition comprising a benzoylpyrazole compound represented by the formula or its salt : wherein each of q , r 1 , r 2 , r 3 , r 4 , r 5 , r 6 and a is as defined in the specification , and at least one compound selected from the group consisting of a polyoxyalkylene sorbitan fatty acid ester , a polyoxyalkylene fatty acid ester , a polyoxyalkylene styryl aryl ether , a polyoxyalkylene styryl aryl ether condensate and a polyoxyalkylene alkyl ether sulfate .