Composition for selective weed control in herbicide-tolerant cotton crops, containing synergistic herbicidal combination of pyridinesulfonyl-urea compound salt and e.g. glyphosate, metolachlor or trifluralin

摘要

A synergistic herbicidal composition for selective weed control in herbicide-tolerant cotton crops contains an optionally solvated alkali(ne earth) metal salt (I) of N-(4,6-dimethoxypyrimidin-2-yl)-N'-(3-(2,2,2-trifluoroethoxy)-pyridin-2-ylsulfonyl)-urea and a compound (II) selected from glyphosate (or its salt), metolachlor, S-metolachlor, prometryn, pyrithiobac-sodium, fluometuron, clomazone, glufosinate ammonium, MSMA, carfentrazone ethyl, sulfentrazone, oxyfluorfen, ametryn, pendimethalin and trifluralin. A synergistic herbicidal composition for selective weed control in herbicide-tolerant cotton crops comprises (in addition to conventional inert formulation auxiliaries) an active agent mixture of: (a) a sulfonyl urea salt of formula (I); and (b) a synergistic amount of a compound (II) selected from glyphosate (or its ammonium, isopropylammonium, sodium, potassium, dimethylamine, isopropylamine, monoethanolammonium or trimesium salt), metolachlor, S-metolachlor, prometryn, pyrithiobac-sodium, fluometuron, clomazone, glufosinate ammonium, MSMA, carfentrazone ethyl, sulfentrazone, oxyfluorfen, ametryn, pendimethalin and trifluralin. M = alkali metal or alkaline earth metal; n = 1 or 2; r, s = 0. 0.5, 1, 1.5, 2, 2.5 or 3; and L = ethyl acetate, acetonitrile, dimethyl sulfoxide, dimethyl formamide, dimethyl acetamide, N-methyl-2-pyrrolidone, acetone, butanone, dichloromethane, trichloromethane, trichloroethane, tetrahydrofuran, diethyl ether, 1,2-dimethoxyethane, dioxan, methyl-tert. butyl ether, chlorobenzene, toluene or xylene.