SYNERGISTIC HERBICIDAL COMPOSITION CONTAINING CERTAIN PYRIDINE OR PYRIMIDINE CARBOXYLIC ACIDS AND CERTAIN CEREAL AND RICE HERBICIDES

• US 20090062121A1
• Filed: 08/22/2008
• Published: 03/05/2009
• Est. Priority Date: 08/27/2007
• Status: Abandoned Application

• Current Assignee: Corteva Agriscience LLC (Corteva, Inc.)
• Original Assignee: Dow Agrosciences LLC (Corteva, Inc.)
• Inventors: Schmitzer, Paul R., Yerkes, Carla N., Wright, Terry R., Satchivi, Norbert M.
• Application Number:
  US12/196,697
• Publication Number:
  US 20090062121A1
• Time in Patent Office: Days
• US Class Current: 504/105
• 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 33/12 Quaternary ammonium compounds
• CPC Class Codes: A01N 35/10 containing a carbon-to-nitrogen double bond
• CPC Class Codes: A01N 37/22 the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
• CPC Class Codes: A01N 37/38 having at least one oxygen or sulfur atom attached to an aromatic ring system
• CPC Class Codes: A01N 37/40 having at least one carboxylic group or a thio analogue, or a derivative thereof, and one oxygen or sulfur atom attached to the same aromatic ring system
• CPC Class Codes: A01N 39/02 Aryloxy-carboxylic acids; Derivatives thereof
• CPC Class Codes: A01N 39/04 Aryloxy-acetic acids; Derivatives thereof
• CPC Class Codes: A01N 41/10 Sulfones; Sulfoxides
• CPC Class Codes: A01N 43/38 condensed with carbocyclic rings
• CPC Class Codes: A01N 43/40 six-membered rings
• CPC Class Codes: A01N 43/42 condensed with carbocyclic rings
• CPC Class Codes: A01N 43/50 1,3-Diazoles; Hydrogenated 1,3-diazoles
• CPC Class Codes: A01N 43/54 1,3-Diazines; Hydrogenated 1,3-diazines
• CPC Class Codes: A01N 43/56 1,2-Diazoles; Hydrogenated 1,2-diazoles
• CPC Class Codes: A01N 43/58 1,2-Diazines; Hydrogenated 1,2-diazines
• CPC Class Codes: A01N 43/653 1,2,4-Triazoles; Hydrogenated 1,2,4-triazoles
• CPC Class Codes: A01N 43/70 Diamino—1,3,5—triazines with only one oxygen, sulfur or halogen atom or only one cyano, thiocyano (—SCN), cyanato (—OCN) or azido (—N3) group directly attached to a ring carbon atom
• CPC Class Codes: A01N 43/707 1,2,3- or 1,2,4-triazines; Hydrogenated 1,2,3- or 1,2,4-triazines
• CPC Class Codes: A01N 43/76 : 1,3-Oxazoles; Hydrogenated 1,3-oxazoles
• CPC Class Codes: A01N 43/80 : five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
• CPC Class Codes: A01N 43/82 : five-membered rings with three ring hetero atoms
• CPC Class Codes: A01N 43/88 : six-membered rings with three ring hetero atoms
• CPC Class Codes: A01N 43/90 : having two or more relevant hetero rings, condensed among themselves or with a common carbocyclic ring system
• CPC Class Codes: A01N 47/12 : containing a —O—CO—N< group, or a thio analogue thereof, neither directly attached to a ring nor the nitrogen atom being a member of a heterocyclic ring
• CPC Class Codes: A01N 47/30 : Derivatives containing the group >N—CO—N aryl or >N—CS—N—aryl
• CPC Class Codes: A01N 47/34 : containing the groups , e.g. biuret; Thio analogues thereof; Urea-aldehyde condensation products
• CPC Class Codes: A01N 47/36 : containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
• CPC Class Codes: A01N 47/38 : containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
• CPC Class Codes: A01N 57/20 : containing acyclic or cycloaliphatic radicals
• CPC Class Codes: C07D 213/79 : Acids; Esters

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

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.

2. 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.

3. 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.

4. The mixture of claim 1 additionally comprising an herbicide safener.

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

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

7. 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.

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

9. 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.

10. 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.

11. 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.