Herbicidal composition

Abstract

A herbicidal composition comprising;(A) 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]-sulfonyl]-4,5-dihydro-5,5-dimethyl-isoxazole, or a herbicidally effective salt; and(B) a second herbicide selected from;(B1) 4-hydroxy-3-[[2-[(2-methoxyethoxy)methyl]-6-(trifluoromethyl)-3-pyridinyl]carbonyl]-bicyclo[3.2.1]oct-3-en-2-one,(B2) tembotrione, and(B3) topramezone,or their herbicidally effective salts.

What is claimed is: 
     
         1 . A herbicidal composition comprising;
 (A) 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethyl-isoxazole, or a herbicidally effective salt; and   (B) a second herbicide selected from;   (B1) 4-hydroxy-3-[[2-[(2-methoxyethoxy)methyl]-6-(trifluoromethyl)-3-pyridinyl]carbonyl]-bicyclo[3.2.1]oct-3-en-2-one,   (B2) tembotrione, and   (B3) topramezone,   or their herbicidally effective salts.   
     
     
         2 . The composition according to  claim 1 , wherein component (B) is 4-hydroxy-3-[[2-[(2-methoxyethoxy)methyl]-6-(trifluoromethyl)-3-pyridinyl]carbonyl]-bicyclo[3.2.1]oct-3-en-2-one, or a herbicidally effective salt. 
     
     
         3 . The composition according to  claim 1 , wherein component (B) is tembotrione, or a herbicidally effective salt. 
     
     
         4 . The composition according to  claim 1 , wherein component (B) is topramezone, or a herbicidally effective salt. 
     
     
         5 . A method for controlling undesirable vegetation in a crop of useful plants, comprising applying to the locus of such vegetation a herbicidally effective amount of a composition as claimed in  claim 1 . 
     
     
         6 . A method for controlling undesirable vegetation in a crop of useful plants, comprising separately applying to the locus of such vegetation;
 (A) 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethyl-isoxazole, or a herbicidally effective salt; and   (B) a second herbicide selected from;   (B1) 4-hydroxy-3-[[2-[(2-methoxyethoxy)methyl]-6-(trifluoromethyl)-3-pyridinyl]carbonyl]-bicyclo[3.2.1]oct-3-en-2-one,   (B2) tembotrione, and   (B3) topramezone,   or their herbicidally effective salts.   
     
     
         7 . The method according to  claim 6 , wherein the crops of useful plants are maize, soya or a cereal. 
     
     
         8 . The method according to  claim 6 , wherein the crop of useful plants is maize. 
     
     
         9 . The method according to  claim 6 , wherein the crop of useful plants is soya. 
     
     
         10 . The method according to  claim 6 , wherein the rate of application of herbicides is from 1 to 4000 g/ha. 
     
     
         11 . A herbicidal composition comprising;
 (A) 3-[[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl]methyl]sulfonyl]-4,5-dihydro-5,5-dimethyl-isoxazole, or a herbicidally effective salt;   (B) a second herbicide selected from;   (B1) 4-hydroxy-3-[[2-[(2-methoxyethoxy)methyl]-6-(trifluoromethyl)-3-pyridinyl]carbonyl]-bicyclo[3.2.1]oct-3-en-2-one,   (B2) tembotrione, and   (B3) topramezone,   or their herbicidally effective salts, and   (C) a safener selected from cloquintocet-mexyl or a salt thereof, fenchlorazole, fenchlorazole-ethyl, mefenpyr, mefenpyr-diethyl, isoxadifen, isoxadifen-ethyl, furilazole or the corresponding R isomer, benoxacor, dichlormid, MON4660, oxabetrinil, cyometrinil or the corresponding (Z) isomer, fenclorim, cyprosulfamide, N-isopropyl-4-(2-methoxy-benzoylsulfamoyl)-benzamide, naphthalic anhydride and flurazole.   
     
     
         12 . A method for controlling undesirable vegetation in a crop of useful plants, comprising applying to the locus of such vegetation a herbicidally effective amount of a composition as claimed in  claim 11 . 
     
     
         13 . The method according to  claim 12 , wherein the rate of application of herbicides is from 1 to 4000 g/ha and the rate of application of safener is from 1 to 500 g/ha. 
     
     
         14 . The method according to  claim 12 , wherein the crops of useful plants are maize, soya or a cereal. 
     
     
         15 . The method according to  claim 12 , wherein the crop of useful plants is maize. 
     
     
         16 . The method according to  claim 12 , wherein the crop of useful plants is soya.