Method of controlling growth of als-tolerant plants

Abstract

A method for the control of the growth of ALS-resistant plants is provided, the method comprising applying to the plants and/or their locus a herbicidally effective amount of a combination of (A) metribuzin and (B) one or more sulfonylureas. A composition comprising a combination of (A) metribuzin and (B) one or more sulfonylureas is also provided.

1 . A method for the control of the growth of ALS-resistant plants comprising applying to the plants and/or their locus a herbicidally effective amount of a combination of (A) metribuzin and (B) one or more sulfonylureas. 
     
     
         2 . The method according to  claim 1 , wherein the one or more sulfonylureas are selected from amidosulfuron, azimsulfuron, bensulfuron, chlorimuron, chlorsulfuron, cinosulfuron, cyclosulfamuron, ethametsulfuron, ethoxysulfuron, flazasulfuron, flucetosulfuron, flupyrsulfuron, foramsulfuron, halosulfuron, imazosulfuron, iodosulfuron, iofensulfuron, metazosulfuron, methiopyrisulfuron, metsulfuron, mesosulfuron, monosulfuron, nicosulfuron, orthosulfamuron, oxasulfuron, primisulfuron, propyrisulfuron, prosulfuron, pyrazosulfuron, rimsulfuron, sulfometuron, sulfosulfuron, thifensulfuron, triasulfuron, tribenuron, trifloxysulfuron, triflusulfuron and tritosulfuron; preferably wherein the one or more sulfonylureas are selected from thifensulfuron, tribenuron, metsulfuron, sulfosulfuron, amidosulfuron, mesosulfuron, iodosulfuron, rimsulfuron, nicosulfuron and halosulfuron. 
     
     
         3 . The method according to  claim 1 , wherein the components (A) metribuzin and (B) one or more sulfonylureas are applied at an application rate of from 0.03 kilograms/hectare (kg/ha) to 2 kg/ha of the total amount of active ingredients being applied. 
     
     
         4 . The method according to  claim 1 , wherein component (A) metribuzin is applied in an amount of at least 5 g/ha. 
     
     
         5 . The method according to  claim 1 , wherein the one or more sulfonylureas are applied in a total amount of at least 1 g/ha. 
     
     
         6 . The method according to  claim 1 , wherein the weight ratio of (A) metribuzin and (B) one or more sulfonylureas is up to 400:1. 
     
     
         7 . The method according to  claim 1 , wherein the weight ratio of (A) metribuzin and (B) one or more sulfonylureas is greater than 1:20. 
     
     
         8 . The method according to  claim 1 , wherein the components (A) metribuzin and (B) one or more sulfonylureas are applied to the plants and/or their locus post-emergence. 
     
     
         9 . The method according to  claim 1 , wherein the ALS-resistant plants are present in a crop of wheat, including both soft wheat and durum wheat, barley, rye, oats, maize, rice,  sorghum , triticale, beans, lentils, peas, soybeans, and peanuts, cotton, flax, hemp, jute, spinach, lettuce, asparagus, cabbages, carrots, onions, tomatoes, potatoes, or paprika; preferably wherein the ALS-resistant plants are present in a crop of wheat, including both soft wheat and durum wheat, barley, rye, oats, triticale, maize, rice, soybeans, cotton, tomatoes and potatoes; more preferably wherein the ALS-resistant plants are present in a crop of wheat, including both soft wheat and durum wheat, barley, rye, oats and triticale. 
     
     
         10 . The method according to  claim 1 , wherein the ALS-tolerant plants comprise  Stellaria  spp.,  Papaver  spp. or  Matricaria  spp.; preferably wherein the ALS-tolerant plants comprise  Stellaria media, Papaver rhoeas, Matricaria chamomilla  or  Matricaria inodora.    
     
     
         11 . The method according to  claim 1 , wherein components (A) and (B) are applied in the form of one or more formulations selected from water-dispersible granules (WDG), water-soluble granules (SG) and oil-based suspension concentrates (OD). 
     
     
         12 . A composition for the control of ALS-tolerant plants comprising a herbicidally effective amount of a combination of (A) metribuzin and (B) one or more sulfonylureas. 
     
     
         13 . The composition according to  claim 12 , wherein the one or more sulfonylureas are selected from thifensulfuron, tribenuron, metsulfuron, sulfosulfuron, amidosulfuron, mesosulfuron, iodosulfuron, rimsulfuron, nicosulfuron and halosulfuron. 
     
     
         14 . The method according to  claim 1 , wherein the components (A) metribuzin and (B) one or more sulfonylureas are applied at an application rate of from 0.05 kg/ha to 1.5 kg/ha of the total amount of active ingredients. 
     
     
         15 . The method according to  claim 1 , wherein component (A) metribuzin is applied in an amount of at least 20 g/ha. 
     
     
         16 . The method according to  claim 1 , wherein the one or more sulfonylureas are applied in a total amount of at least 2 g/ha. 
     
     
         17 . The method according to  claim 1 , wherein the weight ratio of (A) metribuzin and (B) one or more sulfonylureas is up to 70:1. 
     
     
         18 . The method according to  claim 1 , wherein the weight ratio of (A) metribuzin and (B) one or more sulfonylureas is up to 10:1. 
     
     
         19 . The method according to  claim 1 , wherein the weight ratio of (A) metribuzin and (B) one or more sulfonylureas is greater than 1:5.