As for this invention, being the manner which prevents the aforementioned unnecessary plant choice the place where the sugarcane and the unnecessary plant are included (locus) in, to the aforementioned place:(A) The herbicide formula (i):Or that the salt which is allowed agriculture And(B) PS II inhibition Characteristic herbicideThe fact that you apply is included, the component which is applied (a) and the component (b) the tonnage offers the pest control of the aforementioned unnecessary plant to the aforementioned place, and the component which is applied (b) as for the tonnage, the component in the aforementioned sugarcane (a) designates the herbicidal property effect as safe ones, aforementioned manner is offered. As for this invention furthermore, the herbicide a. formula (i) or that the salt which is allowed agriculture And, b. metoribujin, the herbicide which is chosen from the group which consists of hekisajinon, and tebuchiuron is included, the herbicide constituent is offered.本発明は、サトウキビ及び不要な植物を含む場所(locus)において前記不要な植物を選択的に防除する方法であって、前記場所へ:(a)式(I)の除草剤:又はその農学的に許容される塩;及び(b)PS-II阻害性除草剤;を施用することを含み、前記場所へ施用される成分(a)及び成分(b)の量は、前記不要な植物の防除を提供し、並びに施用される成分(b)の量は、前記サトウキビにおける成分(a)の除草性効果を安全なものとする、前記方法を提供する。本発明はさらに、a.式(I)の除草剤又はその農学的に許容される塩;及び、b.メトリブジン、ヘキサジノン、及びテブチウロンから成る群から選択される除草剤を含む、除草剤組成物を提供する。
