Herbicidal composition and method for controlling weeds

Abstract

Provided is a herbicidal composition comprising a PPO inhibitor and glufosinate or its salt, wherein the weight ratio of the PPO inhibitor to glufosinate or its salt is 1/2,000 or less. The herbicidal composition can effectively control weeds with reduced crop injury.

1 . A herbicidal composition comprising a PPO inhibitor and glufosinate or its salt, wherein the weight ratio of the PPO inhibitor to glufosinate or its salt is 1/2,000 or less. 
     
     
         2 . The herbicidal composition according to  claim 1 , wherein the weight ratio of the PPO inhibitor to glufosinate or its salt is from 1/2,000,000 to 1/2,000. 
     
     
         3 . The herbicidal composition according to  claim 1 , wherein the PPO inhibitor is selected from the group consisting of saflufenacil, trifludimoxazin, flumioxazin, ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-3-yl)phenoxy]-2-pyridyloxy]acetate, sulfentrazone, lactofen, fomesafen or its salt, flumiclorac-pentyl, carfentrazone-ethyl, fluthiacet-methyl, and tiafenacil. 
     
     
         4 . A method for controlling weeds in a crop field comprising a step of applying a PPO inhibitor and glufosinate or its salt to the weeds or a soil of the place where the weeds are growing or will grow, wherein the weight ratio of the PPO inhibitor to glufosinate or its salt is 1/2,000 or less. 
     
     
         5 . The method according to  claim 4 , wherein the weight ratio of the PPO inhibitor to glufosinate or its salt is from 1/2,000,000 to 1/2,000. 
     
     
         6 . The method according to  claim 4 , wherein the PPO inhibitor is selected from the group consisting of saflufenacil, trifludimoxazin, flumioxazin, ethyl [3-[2-chloro-4-fluoro-5-(1-methyl-6-trifluoromethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidin-3-yl)phenoxy]-2-pyridyloxy]acetate, sulfentrazone, lactofen, fomesafen or its salt, flumiclorac-pentyl, carfentrazone-ethyl, fluthiacet-methyl, and tiafenacil.