Herbicidal composition for tolerant or resistant corn crops

1 . A herbicide combination for controlling harmful plants in corn crops, wherein the herbicide combination comprises

(A) a herbicide selected from the group consisting of the compounds of the formula (A1)

in which Z represents hydroxyl, —NHCH(CH 3 )CONHCH(CH 3 )COOH or —NHCH(CH 3 )CONHCH[CH 2 CH(CH 3 ) 2 ]COOH,

or an ester or salt thereof, and

(B) a herbicide of the formula (B1),

in which X represents N or CH and R represents CO 2 H or a herbicidally active derivative thereof,

and wherein corn crops are tolerant to the herbicides (A) and (B) present in the combination.

2 . A combination as claimed in claim 1 , wherein the herbicide combination comprises, in addition to components (A) and (B), at least one further active compound selected from the group consisting of safeners, plant growth regulators, herbicides, fungicides and insecticides.

3 . A combination as claimed in claim 1 , wherein the corn crop is tolerant to the herbicide combination in the presence of a safener.

4 . A combination as claimed in claim 1 , wherein the herbicide combination further comprises cyprosulfamide or isoxadifen(-ethyl).

5 . A combination as claimed in claim 1 , wherein the herbicide combination comprises, as component (A), glufosinate-ammonium.

6 . A combination as claimed in claim 1 , wherein the herbicide combination further comprises foramsulfuron (C1), iodosulfuron (C2), isoxaflutole (C3), bromoxynil (C4), flumioxazin (C5), rimsulfuron (C6), mesotrione (C7), thiencarbazone-methyl (C8), tembotrione (C9), atrazine (C10), flufenacet (C11), acetochlor (C12), topramezone (C13), isoxadifen (C14), sulcotrione (C15), thiencarbazone (C16), or iodosulfuron-methyl-sodium (C17).

7 . A combination as claimed in claim 1 , wherein the corn crop is tolerant to 2,4-D, dicamba or to herbicides which inhibit acetolactate synthase (ALS), EPSP synthase or hydroxyphenylpyruvate dioxygenase (HPPD).

8 . A combination as claimed in claim 7 wherein the corn crop is tolerant to 2,4-D, dicamba, at least one sulfonylurea herbicide, at least one sulfonamide herbicide, glyphosate, mesotrione, bicyclopyrone, pyrasulfutole, tembotrione or isoxaflutole (C3).

9 . A combination as claimed in claim 1 , wherein component (B) is selected from the group consisting of

4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid (B1.0)

methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.1)

ethyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.2)

n-propyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.3)

isopropyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.4)

n-butyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.5)

2-butyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.6)

tert-butyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.7)

allyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.8)

2-butoxyethyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.9)

4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid triethylammonium salt (B1.10)

4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid potassium salt (B1.11)

6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid (B1.12)

methyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.13)

ethyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.14)

n-propyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.15)

isopropyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.16)

n-butyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.17)

2-butyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.18)

tert-butyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.19)

allyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.20)

2-butoxyethyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)-pyrimidine-4-carboxylate (B1.21)

6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid triethylammonium salt (B1.22) and

6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid potassium salt (B1.23)

10 . A combination as claimed in claim 9 wherein the active compound (B) is selected from the group consisting of 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)-pyridine-2-carboxylic acid (B1.0) and methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxy-phenyl)pyridine-2-carboxylate (B1.1)

11 . A combination as claimed in claim 9 wherein the active compound (B) is selected from the group consisting of 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)-pyrimidine-4-carboxylic acid (B1.12) and methyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.13)

12 . A herbicidal composition comprising glufosinate-ammonium and, as active compound (B), a compound selected from the group consisting of

4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid (B1.0),

methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.1),

ethyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.2),

n-propyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.3),

isopropyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.4),

n-butyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.5),

2-butyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.6),

tert-butyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.7),

allyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.8),

2-butoxyethyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.9),

4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid triethylammonium salt (B1.10),

4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid potassium salt (B1.11),

6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid (B1.12),

methyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.13),

ethyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.14),

n-propyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.15),

isopropyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.16),

n-butyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.17),

2-butyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.18),

tert-butyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.19),

allyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.20),

2-butoxyethyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)-pyrimidine-4-carboxylate (B1.21),

6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid triethylammonium salt (B1.22) and

6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid potassium salt (B1.23).

13 . The herbicidal composition as claimed in claim 12 , wherein the active compound (B) is selected from the group consisting of 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid (B1.0) and methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate (B1.1).

14 . The herbicidal composition as claimed in claim 12 , wherein the active compound (B) is selected from the group consisting of 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylic acid (B1.12) and methyl 6-amino-5-chloro-2-(4-chloro-2-fluoro-3-methoxyphenyl)pyrimidine-4-carboxylate (B1.13).

15 . The herbicidal composition as claimed in claim 12 , further comprising a safener and/or a further herbicide.

16 . A method for controlling harmful plants in corn crops comprising applying a herbicide combination comprising

(A) a herbicide selected from the group consisting of the compounds of the formula (A1)

in which Z represents hydroxyl, —NHCH(CH 3 )CONHCH(CH 3 )COOH or —NHCH(CH 3 )CONHCH[CH 2 CH(CH 3 ) 2 ]COOH,

or an ester or salt thereof, and

(B) a herbicide of the formula (B1),

in which X represents N or CH and R represents CO 2 H or a herbicidally active derivative thereof,

and wherein said corn crops are tolerant to the herbicides (A) and (B) present in the combination.