Herbicidal composition comprising 4-iodo-2-[3-(4-methoxy-6-methyl-1,3,5-triazin-2-yl)ureidosulfonyl]benzoic esters
View Patent ↗Herbicidal compositions comprising A) at least one compound from the group of the substituted phenylsulfonylureas of the formula I and their agriculturally acceptable salts in which R 1 is (C 1 –C 8 )alkyl, (C 3 –C 4 )alkenyl, (C 3 –C 4 )alkynyl or (C 1 –C 4 )alkyl which is mono- to tetrasubstituted by radicals selected from the group consisting of halogen and (C 1 –C 2 )alkoxy, and B) at least one herbicidally active compound from the group of compounds composed of Ba) herbicides which act selectively against grasses in cereals and/or maize, Bb) herbicides which act selectively against dicots in cereals and/or maize, Bc) herbicides which act selectively against grasses and dicots in cereals and/or maize and Bd) herbicides which act non-selectively against grass weeds and broad-leaved weeds in non-crop areas and/or selectively against grass weeds and broad-leaved weeds in transgenic crops.
1. A synergistic herbicidal composition comprising synergistically effective amounts of
A) at least one compound from the group of the substituted phenylsulfonylureas of the formula I and their agriculturally acceptable salts
in which
R 1 is (C 1 –C 8 )alkyl
and
B) at least one herbicidally active compound from the group of compounds selected from the group consisting of
Ba) one or more herbicides which act selectively against grasses in cereals and/or maize selected from the group consisting of
B8) imazamethabenz and imazamethabenz methyl
and
Bb) one or more herbicides which act selectively against dicots in cereals and/or maize selected from the group consisting of
B16) mecoprop, mecoprop-P
B22) ioxynil
or ioxynil-octanoate or ioxynil-sodium, and
B33) bentazone
2. The composition as claimed in claim 1 , wherein for the compounds of formula (I) or salts thereof, R 1 is methyl, ethyl, n-propyl, isopropyl, n-, tert-, 2-butyl or isobutyl, n-pentyl, isopentyl, n-hexyl, isohexyl, 1,3-dimethylbutyl, n-heptyl, 1-methylhexyl or 1,4-dimethylpentyl.
3. The composition as claimed in claim 1 , wherein for the compounds of formula (I) or salts thereof, R 1 is methyl.
4. The composition of claim 1 , wherein the salts of the herbicide of the formula (I) are formed by replacing the hydrogen of the —SO 2 —NH— group by a cation selected from the group consisting of alkali metals, alkaline earth metals and ammonium.
5. The composition as claimed in claim 1 , wherein the group B herbicide is imazamethabenz, imazamethabenz methyl, mecoprop, mecoprop-P, ioxynil, or bentazone.
6. The composition as claimed in claim 1 , which comprises 0.1 to 9% by weight of at least one compound of formula I or salts thereof and at least one group B herbicide.
7. The composition as claimed in claim 1 , wherein the group B herbicide is imazamethabenz, imamazamethabenz methyl, mecoprop, mecoprop-P, or ioxynil.
8. The composition as claimed in claim 1 , wherein the group B herbicide is
B33) bentazone
9. A method of controlling undesirable plants, which comprises applying the synergistic herbicidal composition according to claim 1 to said undesirable plants or to an area under cultivation.
10. The method as claimed in claim 1 , wherein the rate of application for the compounds of formula (I) or salts thereof is from 0.1 to 100 g of ai./ha and the rate for the group B herbicide is from 1 to 5000 g of a.i./ha.
11. The method as claimed in claim 1 , wherein the rate of application for the compound of formula (I) or salts thereof is from 2 to 40 g of a.i./ha.
12. The method according to claim 1 , wherein said at least one compound of formula I or salts thereof and said at least one herbicide of group B are applied in a weight ratio of 1:2500 to 20: 1, either simultaneously or at separate points in time.
13. The method according to claim 1 , wherein the synergistic herbicidal composition is employed in transgenic crops, or in cereals, maize, rice, sugar cane, plantation crops, grasslands or pastures.
14. The method according to claim 1 , wherein the synergistic herbicidal composition is for the selection control of undesirable plants.