Synergistic herbicidal composition containing certain pyridine or pyrimidine carboxylic acids and certain cereal and rice herbicides

Patent metadata

Field	Value
Publication number	US-10556865-B2
Application number	US-201715671671-A
Country	US
Kind code	B2
Filing date	Aug 8, 2017
Priority date	Aug 27, 2007
Publication date	Feb 11, 2020
Grant date	Feb 11, 2020

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.

First claim

What is claimed is:

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, hal represents F, Cl or Br, and R represents methyl or ethyl,
or an agriculturally acceptable salt, ester or amide thereof, and (b) a second herbicide selected from the group consisting of aminopyralid, bispyribac, cyhalofop, triclopyr and mixtures thereof; wherein
the weight ratio of the first herbicide to aminopyralid ranges from 3.5:1 to 14:1;
the weight ratio of the first herbicide to bispyribac ranges from 1:6.39 to 2.5:1;
the weight ratio of the first herbicide to cyhalofop ranges from 70:90 to 4.38:200; or
the weight ratio of the first herbicide to triclopyr ranges from 1:16 to 1:32.

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

3. The mixture of claim 1 in which the pyridine carboxylic acid of the formula (I) is 4-amino-3-chloro-6-(4-chloro-2-fluoro-3-methoxy-phenyl)pyridine-2-carboxylic acid, or an agriculturally acceptable salt or ester thereof.

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

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

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

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

8. The mixture of claim 1 , wherein the second herbicide is aminopyralid.

9. The mixture of claim 1 , wherein the second herbicide is cyhalofop.

10. The mixture of claim 1 , wherein the second herbicide is triclopyr.

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

12. The method of claim 11 , wherein the undesirable vegetation is controlled in cereals.

13. The method of claim 11 , wherein the undesirable vegetation is controlled in rice.

Assignees

• Dow Agrosciences Llc

Inventors

• Satchivi Norbert M
• Schmitzer Paul R
• Yerkes Carla N
• Wright Terry R

Classifications

• C07D213/79 Primary

  Acids; Esters · CPC title

• A01N43/54

  1,3-Diazines; Hydrogenated 1,3-diazines · CPC title

• A01N43/58

  1,2-Diazines; Hydrogenated 1,2-diazines · CPC title

• A01N43/707

  1,2,3- or 1,2,4-triazines; Hydrogenated 1,2,3- or 1,2,4-triazines · CPC title

• A01N43/40 Primary

  six-membered rings · CPC title