Herbicide/safener combination

• US 8,962,523 B2
• Filed: 11/25/2009
• Issued: 02/24/2015
• Est. Priority Date: 11/29/2008
• Status: Active Grant

• Current Assignee: Bayer Cropscience AG (Bayer AG)
• Original Assignee: Bayer Cropscience AG (Bayer AG)
• Inventors: Rosinger, Christopher Hugh, Hacker, Erwin, Ahrens, Hartmut, Dietrich, Hansjrg, Ziemer, Frank
• Primary Examiner(s): Pryor, Alton
• Application Number:
  US12/626,158
• Publication Number:
  US 20100137137A1
• Time in Patent Office: 1,917 Days
• Field of Search: None
• US Class Current: 504/100
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• CPC Class Codes: A01N 25/32 Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
• CPC Class Codes: A01N 43/40 six-membered rings
• CPC Class Codes: A01N 43/56 1,2-Diazoles; Hydrogenated 1,2-diazoles
• CPC Class Codes: A01N 43/653 1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
• CPC Class Codes: A01N 43/713 having rings with four or more nitrogen atoms as the only ring hetero atoms
• CPC Class Codes: A01N 43/76 1,3-Oxazoles; Hydrogenated 1,3-oxazoles
• CPC Class Codes: A01N 43/82 five-membered rings with three ring hetero atoms

Abstract

A composition comprising

(A) one or more compounds of the formula (I) or salts thereof,

• • in which the individual indices have the meaning defined in the description and
    (B) one or more safeners
    is described.

Claims

1. A herbicidal composition to be used in corn comprising

(A) 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate or a salt, ester, acyl hydrazide, imidate, thioimidate, amidine, amide, orthoester, acyl cyanide, acyl halide, thio ester, thione ester, dithiol ester, or nitrile derivative thereof that (a) does not impair the herbicidal effect of the 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate or derivative thereof and (b) is or can be hydrolyzed, oxidized, or metabolized in plants or in the soil to give 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate, and

(B) one or more safeners selected from the group consisting of cyprosulfamide and 1-[4-(N-2-methoxybenzoylsulfamoyl)phenyl]-3-methylurea,

wherein said herbicidal composition reduces injury to corn.

2. The composition as claimed in claim 1, comprising, as component (A), the compound methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate and, as component (B), cyprosulfamide.

3. The composition as claimed in claim 1 comprising an antidotically effective amount of one or more of said safeners, wherein an antidotically effective amount is an amount of one or more safeners which is suitable for reducing the phytotoxic effect on corn of 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate or a salt, ester, acyl hydrazide, imidate, thioimidate, amidine, amide, orthoester, acyl cyanide, acyl halide, thio ester, thione ester, dithiol ester, or nitrile derivative thereof that (a) does not impair the herbicidal effect of the 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate or derivative thereof and (b) is or can be hydrolyzed, oxidized, or metabolized in plants or in the soil to give 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate.

4. The composition as claimed in claim 1, wherein the safener is cyprosulfamide.

5. The composition as claimed in claim 1, wherein the safener is 1-[4-(N-2-methoxybenzoylsulfamoyl)phenyl]-3-methylurea.

6. The composition as claimed in claim 1, wherein component (A) is the compound methyl 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate.

7. The composition as claimed in claim 1, wherein component (A) is the compound 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylic acid.

8. The composition as claimed in claim 1, wherein the weight ratio of (A) to (B) is 1:

1000 to 1000;

1.

9. A method for controlling undesired plants in corn, in which

(A) 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate or a salt, ester, acyl hydrazide, imidate, thioimidate, amidine, amide, orthoester, acyl cyanide, acyl halide, thio ester, thione ester, dithiol ester, or nitrile derivative thereof that (a) does not impair the herbicidal effect of the 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate or derivative thereof and (b) is or can be hydrolyzed, oxidized, or metabolized in plants or in the soil to give 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)pyridine-2-carboxylate, and

(B) one or more safeners selected from the group consisting of cyprosulfamide and 1-[4-(N-2-methoxybenzoylsulfamoyl)phenyl]-3-methylurea

are applied together or separately, to the undesired plants in the presence of corn, corn seed material, or the area on which the corn grows.

10. The method as claimed in claim 9, wherein the corn is transgenic or tolerant owing to selective cultivation.

11. The method as claimed in claim 9, wherein the application rate of (A) is 0.1 to 800 g of a.i./ha and the application rate of (B) is 0.001 to 5 kg of a.i./ha.

12. The method as claimed in claim 9, wherein the application rate of (A) is 10 to 400 g of a.i./ha and the application rate of (B) is 0.005 to 2.5 kg of a.i./ha.

13. A herbicidal composition to be used in corn comprising

(A) 4-amino-3-chloro-6-(6-chloro-3-pyridinyl)pyridine-2-carboxylate or a salt or ester thereof, and

(B) one or more safeners selected from the group consisting of cyprosulfamide and cloquintocet-mexyl,

wherein said herbicidal composition reduces injury to corn.

14. A method for controlling undesired plants in corn, in which

(A) the compound methyl 4-amino-3-chloro-6-(6-chloro-3-pyridinyl)pyridine-2-carboxylate or a salt or ester thereof,

and

(B) one or more safeners selected from the group consisting of cyprosulfamide and cloquintocet-mexyl,

are applied together or separately, to the undesired plants in the presence of corn, corn seed material, or the area on which the corn grows.

15. The method as claimed in claim 14, wherein the application rate of (A) is 25 to 100 g of a.i./ha and the application rate of (B) is 50 to 200 g of a.i./ha.

16. The method as claimed in claim 14, wherein the application rate of (A) is 0.1 to 800 g of a.i./ha and the application rate of (B) is 0.001 to 5 kg of a.i./ha.