Natural indole auxin and aminopolycarboxylic acid herbicidal compositions

Patent metadata

Field	Value
Publication number	US-11910795-B2
Application number	US-202117513810-A
Country	US
Kind code	B2
Filing date	Oct 28, 2021
Priority date	Mar 15, 2013
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

This disclosure features herbicidal compositions including one or more indole auxins and methods of making and using the same.

First claim

What is claimed is:

1. A broadleaf weed herbicidal composition, comprising:
(1) one or more natural indole auxins, or an agriculturally suitable salt thereof, wherein the one or more natural indole auxins are selected from the group consisting of: indole-3-acetic acid or an agriculturally suitable salt thereof, indole-3-butyric acid or an agriculturally suitable salt thereof, and indole-3-propionic acid or an agriculturally suitable salt thereof;
(2) one or more chelating agents comprising an aminopolycarboxylic acid or an agriculturally suitable salt thereof; and
(3) one or more emulsifiers;
wherein (1) is present in an amount of about 0.5 to about 5% by weight of the composition,
wherein the weight ratio of (1):(2) is from 1:1 to 1:5; and
wherein the broadleaf weed herbicidal composition is selectively toxic to broadleaf weeds and less toxic to turf grasses.

2. The composition of claim 1 , wherein (1) is indole-3-butyric acid or an agriculturally suitable salt thereof.

3. The composition according to claim 1 , wherein the aminopolycarboxylic acid is ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), hydroxyethylenediaminetriacetic acid (HEDTA), ethylenediaminedisuccinate (EDDS) or an agriculturally acceptable salt thereof.

4. The composition according to claim 3 , wherein the aminopolycarboxylic acid is ethylenediaminetetraacetic acid (EDTA) or an agriculturally acceptable salt thereof.

5. The composition according to claim 1 , wherein (2) is present in an amount of about 0.1 to about 10% by weight of the composition.

6. The composition according to claim 1 , wherein the composition comprises at least 50 weight percent of (1) and (2).

7. The composition according to claim 1 , wherein (3) comprises an alcohol ethoxylate, an alcohol alkoxylate, an alkyl polysaccharide, a glycerol oleate, a polyoxyethylene-polyoxypropylene block copolymer, an alkyl phenol ethoxylate, a polymeric surfactant, a polyethylene glycol, a sorbitan fatty acid ester ethoxylate, or any combination thereof.

8. The composition according to claim 1 , wherein (3) comprises a sorbitan fatty acid ester ethoxylate.

9. The composition according to claim 1 , wherein the composition further comprises one or more agriculturally suitable adjuvants.

10. The composition of claim 9 , wherein each of the one or more agriculturally suitable adjuvants is independently selected from the group consisting of a humectant, a penetrant, a pigment, and a wetting or spreading agent.

11. The composition according to claim 9 , wherein each of the one or more agriculturally suitable adjuvants is independently selected from the group consisting of a polyethylene glycol, a polypropylene glycol, propylene glycol, and an oil adjuvant.

12. The composition according to claim 9 , wherein the weight ratio of (1):the one or more agriculturally suitable adjuvants is from 1:1 to 1:50.

13. The composition according to claim 1 , wherein the composition comprises:
(1) indole-3-butyric acid or an agriculturally suitable salt thereof;
(2) ethylenediaminetetraacetic acid (EDTA) or an agriculturally suitable salt thereof; and
(3) a sorbitan fatty acid ester ethoxylate emulsifier.

14. The composition according to claim 13 , wherein the composition comprises at least 50 weight percent of (1), (2), and further comprises one or more agriculturally suitable adjuvants.

15. The composition according to claim 1 , wherein the composition is substantially free of water.

16. The composition according to claim 1 , wherein the composition further comprises water.

17. A broadleaf weed herbicidal composition, comprising:
(1) indole-3-butyric acid or an agriculturally suitable salt thereof;
(2) ethylenediaminetetraacetic acid (EDTA) or an agriculturally suitable salt thereof; and
(3) a sorbitan fatty acid ester ethoxylate emulsifier;
wherein (1) is present in an amount of about 0.5 to about 5% by weight of the composition;
wherein (2) is present in an amount of up to about 10% by weight of the composition;
wherein the weight ratio of (1):(2) is from 1:1 to 1:5; and
wherein the broadleaf weed herbicidal composition is selectively toxic to broadleaf weeds and less toxic to turf grasses.

18. A method for selectively controlling broadleaf weeds on a turfgrass, which comprises applying, in combination:
(1) one or more natural indole auxins, or an agriculturally suitable salt thereof, wherein the one or more natural indole auxins are selected from the group consisting of: indole-3-acetic acid or an agriculturally suitable salt thereof, indole- 3 -butyric acid or an agriculturally suitable salt thereof, and indole-3-propionic acid or an agriculturally suitable salt thereof;
(2) one or more chelating agents comprising an aminopolycarboxylic acid or an agriculturally suitable salt thereof; and
(3) one or more emulsifiers;
to the broadleaf weeds and to the turfgrass, and/or to a growing medium that is in proximity to a base and root system of the broadleaf weeds and the turfgrass;
wherein (1) is present in an amount of about 0.5 to about 5% by weight of the composition;
wherein the weight ratio of (1):(2) is from 1:1 to 1:5; and
wherein the combination is selectively toxic to broadleaf weeds and less toxic to turf grasses.

19. The method of claim 18 , wherein the composition comprises:
(1) indole-3-butyric acid or an agriculturally suitable salt thereof;
(2) ethylenediaminetetraacetic acid (EDTA) or an agriculturally suitable salt thereof; and
(3) a sorbitan fatty acid ester ethoxylate emulsifier.

Assignees

• Suncor Energy Inc

Inventors

• Liu Jun
• Fefer Michael

Classifications

• A01N43/38 Primary

  condensed with carbocyclic rings · CPC title

• A01N37/44

  containing at least one carboxylic group or a thio analogue, or a derivative thereof, and a nitrogen atom attached to the same carbon skeleton by a single or double bond, this nitrogen atom not being a member of a derivative or of a thio analogue of a carboxylic group, e.g. amino-carboxylic acids · CPC title

• A01N25/02

  containing liquids as carriers, diluents or solvents · CPC title