Method of controlling herbicide resistant weeds

Abstract

The present invention can provide a method having a high control effect on the removal of herbicide resistant weeds in a cultivation area for crops. The method includes a step of treating weeds with one or more of herbicides selected from the group consisting of saflufenacil, trifludimoxazin, flumioxazin, and ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-3-yl)phenoxy]-2-pyridyloxy]acetate, wherein the herbicide resistant weeds are PPO-inhibitor resistant weeds having one or more mutations selected from the group consisting of an Arg128Met mutation, Arg128Gly mutation, Arg128His mutation, and Gly399Ala mutation in PPO.

1 . A method of controlling herbicide resistant weeds, the method comprising a step of treating the herbicide resistant weeds with an amount of saflufenacil, wherein the herbicide resistant weeds are PPO-inhibitor resistant weeds having one or more mutations selected from the group consisting of an Arg128Met mutation, Arg128Gly mutation, Arg128His mutation, and Gly399Ala mutation in PPO, and the herbicide resistant weeds are  Amaranthus palmeri  or waterhemp. 
     
     
         2 . (canceled) 
     
     
         3 . The method of controlling herbicide resistant weeds according to  claim 1 , the method being performed in crop cultivation. 
     
     
         4 . The method of controlling herbicide resistant weeds according to  claim 3 , wherein the crop is a crop selected from the group consisting of a soybean, corn, cotton, rape seed, rice, wheat, barley, sugarcane, sugar beet, sorghum, and sunflower. 
     
     
         5 . The method of controlling herbicide resistant weeds according to  claim 3 , wherein the crop is a crop which is tolerant to saflufenacil, trifludimoxazin, flumioxazin, or ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-3-yl)phenoxy]-2-pyridyloxy]acetate, or a combination thereof. 
     
     
         6 . (canceled) 
     
     
         7 . The method of controlling herbicide resistant weeds according to  claim 1 , wherein the one or more mutations are selected from an Arg128Gly mutation or a Gly399Ala mutation in PPO. 
     
     
         8 . The method of controlling herbicide resistant weeds according to  claim 1 , wherein the one or more mutations are selected from an Arg128His mutation or a Gly399Ala mutation in PPO. 
     
     
         9 . The method of controlling herbicide resistant weeds according to  claim 1 , wherein the amount of saflufenacil is 5 to 200 g per 10000 m 2 . 
     
     
         10 . The method of controlling herbicide resistant weeds according to  claim 8 , wherein the amount of saflufenacil is 5 to 200 g per 10000 m 2 . 
     
     
         11 . The method of controlling herbicide resistant weeds according to  claim 1 , wherein the amount of saflufenacil is 10 to 100 g per 10000 m 2 . 
     
     
         12 . A method of controlling herbicide resistant weeds, the method comprising a step of treating the herbicide resistant weeds with an amount of saflufenacil, wherein the herbicide resistant weeds are PPO-inhibitor resistant weeds having an Arg128Gly mutation in PPO, and the herbicide resistant weeds are  Amaranthus palmeri.    
     
     
         13 . The method of controlling herbicide resistant weeds according to  claim 12 , the method being performed in crop cultivation. 
     
     
         14 . The method of controlling herbicide resistant weeds according to  claim 13 , wherein the crop is a crop selected from the group consisting of a soybean, corn, cotton, rape seed, rice, wheat, barley, sugarcane, sugar beet, sorghum, and sunflower. 
     
     
         15 . The method of controlling herbicide resistant weeds according to  claim 13 , wherein the crop is a crop which is tolerant to saflufenacil, trifludimoxazin, flumioxazin, or ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-3-yl)phenoxy]-2-pyridyloxy]acetate, or a combination thereof. 
     
     
         16 . The method of controlling herbicide resistant weeds according to  claim 12 , wherein the amount of saflufenacil is 5 to 200 g per 10000 m 2 . 
     
     
         17 . A method of controlling herbicide resistant weeds, the method comprising a step of treating the herbicide resistant weeds with an amount of saflufenacil, wherein the herbicide resistant weeds are PPO-inhibitor resistant weeds having a Gly399Ala mutation in PPO, and the herbicide resistant weeds are  Amaranthus palmeri.    
     
     
         18 . The method of controlling herbicide resistant weeds according to  claim 17 , the method being performed in crop cultivation. 
     
     
         19 . The method of controlling herbicide resistant weeds according to  claim 18 , wherein the crop is a crop selected from the group consisting of a soybean, corn, cotton, rape seed, rice, wheat, barley, sugarcane, sugar beet, sorghum, and sunflower. 
     
     
         20 . The method of controlling herbicide resistant weeds according to  claim 18 , wherein the crop is a crop which is tolerant to saflufenacil, trifludimoxazin, flumioxazin, or ethyl 3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-3-yl)phenoxyl-2-pyridyloxy]acetate, or a combination thereof. 
     
     
         21 . The method of controlling herbicide resistant weeds according to  claim 17 , wherein the amount of saflufenacil is 5 to 200 g per 10000 m 2 . 
     
     
         22 . The method of controlling herbicide resistant weeds according to  claim 17 , wherein the amount of saflufenacil is 10 to 100 g pr 10000 m 2 .