# US 2018/0022703 A1 · Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides

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- Number: US 2018/0022703 A1
- Document ID: US20180022703A1
- Status: Published application
- Kind: A1
- Application number: 15/671,671
- Filed: 2017-08-08
- Published: 2018-01-25
- Earliest claimed: 2007-08-27
- Assignees: Dow AgroSciences LLC
- Applicants: Dow AgroSciences, LLC
- Inventors: Norbert M. Satchivi; Paul R. Schmitzer; Carla N. Yerkes; Terry R. Wright
- Web page: https://patentgrep.com/patent/US20180022703A1

## CPC

- C07D 213/79: Acids; Esters
- A01N 43/40: six-membered rings
- A01N 43/42: condensed with carbocyclic rings
- A01N 43/50: 1,3-Diazoles; Hydrogenated 1,3-diazoles
- A01N 43/54: 1,3-Diazines; Hydrogenated 1,3-diazines
- A01N 43/56: 1,2-Diazoles; Hydrogenated 1,2-diazoles
- A01N 43/58: 1,2-Diazines; Hydrogenated 1,2-diazines
- A01N 43/653: 1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
- A01N 43/707: 1,2,3- or 1,2,4-triazines; Hydrogenated 1,2,3- or 1,2,4-triazines
- A01N 43/82: five-membered rings with three ring hetero atoms
- A01N 43/88: six-membered rings with three ring hetero atoms
- A01N 43/90: having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
- A01N 47/30: Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
- A01N 47/36: containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
- A01N 47/38: containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## Abstract

An herbicidal composition containing (a) a pyridine or pyrimidine carboxylic acid component and (b) a second cereal or rice herbicide component provides synergistic control of selected weeds.

## Claims

### Claim 1

A synergistic herbicidal mixture comprising an herbicidally effective amount of (a) a first herbicide selected from the group of a pyridine or a pyrimidine carboxylic acid of the formula (I)
wherein X represents CH or N, hal represents F, Cl or Br, and R represents methyl or ethyl,
and agriculturally acceptable salts, esters and amides of the carboxylic acid, and (b) a second herbicide selected from the group consisting of amidosulfuron, aminopyralid, beflubutamid, bensulfuron, bentazone, bispyribac, bromoxynil, carfentrazone, chlormequat, chlorotoluron, chlorsulfuron, clodinafop, clomazone, cyhalofop, dicamba, dichlorprop, diflufenican, diflufenzopyr, fenoxaprop, florasulam, flucarbazone, flufenacet, flupyrsulfuron, glyphosate, halosulfuron, imazamethabenz, imazamox, imazethapyr, indol-3-ylacetic acid, 4-indol-3-ylbutyric acid, iodosulfuron, isoproturon, isoxaben, MCPA, mesosulfuron, metribuzin, metsulfuron, norflurazon, penoxsulam, picolinafen, pinoxaden, propanil, propoxycarbazone, prosulfocarb, pyrasulfotole, pyrazosulfuron, pyriclor, pyroxsulam, quinclorac, sulcotrione, sulfosulfuron, thifensulfuron, tralkoxydim, tribenuron, triclopyr and mixtures thereof.

### Claim 2 (depends on 1)

The mixture of claim 1 in which, for the compound of Formula I, X represents CH or N, hal represents F or Cl and R represents methyl.

### Claim 3 (depends on 1)

The mixture of claim 1 in which the pyridine or pyrimidine carboxylic acid of the formula (I) is a 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxy-phenyl)pyridine-2-carboxylic acid derivative.

### Claim 4 (depends on 1)

The mixture of claim 1 additionally comprising an herbicide safener.

### Claim 5 (depends on 4)

The mixture of claim 4 in which the herbicide safener is cloquintocet mexyl.

### Claim 6 (depends on 4)

The mixture of claim 4 in which the herbicide safener is mefenpyr-diethyl.

### Claim 7 (depends on 1)

The mixture of claim 1 in which the weight ratio of the pyridine or pyrimidine carboxylic acid of formula (I) component to the second herbicide component is between about 5:1 and about 1:256.

### Claim 8 (depends on 1)

An herbicidal composition comprising an herbicidally effective amount of the herbicidal mixture of claim 1 and an agriculturally acceptable adjuvant or carrier.

### Claim 9 (depends on 1)

A method of controlling undesirable vegetation which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation an herbicidally effective amount the herbicidal mixture of claim 1.

### Claim 10 (depends on 9)

A method of claim 9 for controlling undesirable vegetation in cereals which comprises contacting the vegetation or the locus thereof with or applying to the soil to prevent the emergence of vegetation an herbicidally effective amount the herbicidal mixture comprising an herbicidally effective amount of (a) a first herbicide selected from the group of a pyridine or a pyrimidine carboxylic acid of the formula (I)
wherein X represents CH or N, hal represents F, Cl or Br, and R represents methyl or ethyl,
and agriculturally acceptable salts, esters and amides of the carboxylic acid, and (b) a second herbicide selected from the group consisting of amidosulfuron, aminopyralid, beflubutamid, bentazone, bromoxynil, chlormequat, chlorotoluron, chlorsulfuron, clodinafop, dicamba, dichlorprop, diflufenican, fenoxaprop, florasulam, flucarbazone, flufenacet, flupyrsulfuron, glyphosate, imazamethabenz, indol-3-ylacetic acid, 4-indol-3-ylbutyric acid, iodosulfuron, isoproturon, isoxaben, MCPA, mesosulfuron, metribuzin, metsulfuron, picolinafen, pinoxaden, propoxycarbazone, prosulfocarb, pyroxsulam, pyrasulfotole, quinclorac, sulfosulfuron, thifensulfuron, tralkoxydim, tribenuron and mixtures thereof.

### Claim 11 (depends on 9)

A method of claim 9 for controlling undesirable vegetation in rice which comprises contacting the vegetation or the locus thereof with or applying to the soil or water to prevent the emergence or growth of vegetation an herbicidally effective amount the herbicidal mixture comprising an herbicidally effective amount of (a) a first herbicide selected from the group of a pyridine carboxylic acid of the formula (I)
wherein hal represents F, Cl or Br, and R represents methyl or ethyl,
and agriculturally acceptable salts, esters and amides of the carboxylic acid, and (b) a second herbicide selected from the group consisting of bensulfuron, bispyribac, carfentrazone, clomazone, cyhalofop, diflufenzopyr, fenoxaprop, glyphosate, halosulfuron, imazamox, imazethapyr, MCPA, norflurazon, penoxsulam, propanil, pyrazosulfuron, pyriclor, quinclorac, sulcotrione, triclopyr and mixtures thereof.