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 weeds with trifludimoxazin, 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. 
     
     
         2 . The method of controlling herbicide resistant weeds according to  claim 1 , wherein the herbicide resistant weed is  Amaranthus palmeri , waterhemp, or ragweed. 
     
     
         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. 
     
     
         6 . The method of controlling herbicide resistant weeds according to  claim 1 , wherein the herbicide resistant weed is a lactofen resistant weed or fomesafen resistant weed.