As for this invention, as a active ingredient1) It is chosen from the group which consists of imazametabenzumechiru, imazamox, imazapitsuku, imazapyr, imazaquin and imazetapiru, the imidazolinone type herbicide as chemical compound (i) And2) Formula (1):< Conversion 1 >(In formula,X, - C (=NOCH3) - CONHCH3, - C (=NOCH3) - COOCH3, - C (=CHOCH3) - COOCH3, - N (OCH3) - COOCH3 or - C (=NOCH3) - to be R, in this case R the 4H- [1,5,2] dioxazine - 3 - is iruAs for Y, - O-, - =NOCH-de2 there is OCH- and - C3 (2CH) =NOCH-mataha-CH =CH-C3 (2CH)Z, phenyl, 2 - the methylphenyl, 3 - trifluoromethyl phenyl, 2,5 - the dimethylphenyl, 4 - the chlorophenyl, 2,6 - dichlorophenyl, 4 - the chlorophenyl - 1H-pirazoru - 3 - iru, 6- (2 - cyano phenoxy) pyrimidine - 4 - iru, 6- (2 - kurorohuenokishi) - 5 - fluoro - pyrimidine - 4 - iru, 6 - the trifluoromethyl - pyridine - 2 - iru, 3 - the butyl - 4 - methyl - 2 - oxo - 2H-kuromen - 7 - iru and 3,4 - dimethyl - 2 - oxo - 2H-kuromen - 7 - is chosen from iru, it is not displacement, displacement isIt is aromatic ring system)So bactericide chemical compound (ii) it is displayedIt regards the multiplication blend which is included at the multiplication effective tonnage. In inside the range of this invention, health of the plant and/or weeding activity and/or it is possible to raise sterilization activity multiplication. Furthermore it regards the manner which prevents the plant pathogenic fungus in manner and the crop which prevent the desirable vegetation where as for this invention, the plant and the plant grow, or the manner which or the place where it is expected that it grows, or treats the plant propagation material where the plant grows from there at the effective tonnage of the blend which is defined on description above improves the health of the plant, in the crop.< Choice figure > It is not本発明は、活性成分として1) イマザメタベンズメチル、イマザモックス、イマザピック、イマザピル、イマザキンおよびイマゼタピルからなる群から選択される、化合物(I)としてのイミダゾリノン系除草剤;および2) 式(1):【化1】(式中、Xは、-C(=NOCH3)-CONHCH3、-C(=N
