LOW VOLATILITY HERBICIDAL COMPOSITIONS

• US 20140128264A1
• Filed: 11/05/2013
• Published: 05/08/2014
• Est. Priority Date: 11/05/2012
• Status: Abandoned Application

• Current Assignee: Monsanto Technology LLC (Bayer AG)
• Original Assignee: Monsanto Technology LLC (Bayer AG)
• Inventors: Wright, Daniel R., Hemminghaus, John W., MacInnes, Alison, Zhang, Junhua
• Application Number:
  US14/071,927
• Publication Number:
  US 20140128264A1
• Time in Patent Office: Days
• US Class Current: 504/147
• 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 25/22 containing ingredients stabilising the active ingredients
• CPC Class Codes: A01N 37/02 Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
• CPC Class Codes: A01N 37/04 polybasic
• 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 39/04 Aryloxy-acetic acids; Derivatives thereof
• CPC Class Codes: A01N 57/02 having alternatively specified atoms bound to the phosphorus atom and not covered by a single one of groups A01N57/10, A01N57/18, A01N57/26, A01N57/34
• CPC Class Codes: A01N 57/20 containing acyclic or cycloaliphatic radicals
• CPC Class Codes: G09B 19/00 Teaching not covered by other main groups of this subclass teaching or practice apparatus for gun-aiming or gun-laying F41G3/26

Abstract

The present invention relates generally low volatility herbicidal compositions comprising at least one auxin herbicide and at least one monocarboxylic acid, or monocarboxylate thereof. The invention further relates generally to methods for preparing and using such low volatility herbicidal compositions, including methods for controlling auxin-susceptible plant growth on agricultural and non-agricultural lands.

Claims

1. A herbicidal composition concentrate comprising:

(a) at least one auxin herbicide; and

(b) at least one monocarboxylic acid, or a monocarboxylate thereof;

wherein the concentrate satisfies one or more of the following conditions;

the molar ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 10;

1;

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1;

the concentrate comprises an amount (acid equivalent weight) of the monocarboxylic acid, or monocarboxylate thereof, from about 0.25% to about 25% by weight of the concentrate;

the concentration of the monocarboxylic acid, or monocarboxylate thereof, is from about 1 gram (acid equivalent weight)/L to about 250 grams (acid equivalent weight)/L; and

the concentrate comprises an amount of the monocarboxylic acid, or monocarboxylate thereof, sufficient to reduce the concentration of volatilized auxin herbicide in the vapor phase surrounding the concentrate by at least 10% relative to the concentration of volatilized auxin herbicide in the vapor phase surrounding an otherwise identical concentrate lacking the monocarboxylic acid, or monocarboxylate thereof.

2. The herbicidal composition concentrate of claim 1, wherein the molar ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1:

10 to about 10;

1.

3. The herbicidal composition concentrate of claim 1, wherein the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1:

10 to about 5;

1.

4. The herbicidal composition concentrate of claim 1, wherein the concentrate comprises an amount (acid equivalent weight) of the monocarboxylic acid, or monocarboxylate thereof, from about 0.25% to about 25% by weight of the concentrate.

5. The herbicidal composition concentrate of claim 1, wherein:

the molar ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 10;

1;

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1; and

the concentrate comprises an amount (acid equivalent weight) of the monocarboxylic acid, or monocarboxylate thereof, from about 0.25% to about 25% by weight of the concentrate.

6. The herbicidal composition concentrate of claim 1, wherein the concentrate comprises dicamba, or an agriculturally acceptable salt or ester thereof.

7. The herbicidal composition concentrate of claim 1, wherein the concentrate comprises 2,4-D, or an agriculturally acceptable salt or ester thereof.

8. The herbicidal composition concentrate of claim 1, wherein the concentrate comprises acetic acid, or an agriculturally acceptable salt thereof.

9. The herbicidal composition concentrate of claim 1, wherein the concentrate comprises dicamba, or an agriculturally acceptable salt or ester thereof, and acetic acid, or an agriculturally acceptable salt thereof.

10. The herbicidal composition concentrate of claim 1, wherein the concentrate comprises 2,4-D, or an agriculturally acceptable salt or ester thereof, and acetic acid, or an agriculturally acceptable salt thereof.

11. The herbicidal composition concentrate of claim 1, wherein the concentrate further comprises a non-auxin herbicide.

12. The herbicidal composition concentrate of claim 11, wherein the non-auxin herbicide is glyphosate, or an agriculturally acceptable salt thereof.

13. The herbicidal composition concentrate of claim 11, wherein the non-auxin herbicide is glufosinate, or an agriculturally acceptable salt thereof.

14. The herbicidal composition concentrate of claim 11, wherein the concentrate satisfies one or more of the following conditions:

the sum of the concentration of auxin herbicide and the concentration of non-auxin herbicide is from about 120 grams (acid equivalent weight)/L to about 600 grams (acid equivalent weight)/L;

the acid equivalent weight ratio of auxin herbicide to non-auxin herbicide is from about 1;

5 to about 2;

1; and

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1.

15. The herbicidal composition concentrate of claim 1, wherein the concentrate is a dry herbicidal composition.

16. The herbicidal composition concentrate of claim 1, wherein the concentrate is a liquid herbicidal composition.

17. A herbicidal composition comprising:

(a) at least one auxin herbicide;

(b) at least one monocarboxylic acid, or a monocarboxylate thereof; and

(c) water;

wherein the composition optionally comprises a non-auxin herbicide; and

wherein the composition satisfies one or more of the following conditions;

the molar ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 10;

1;

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1;

the composition comprises an amount (acid equivalent weight) of the monocarboxylic acid, or monocarboxylate thereof, from about 0.1% to about 25% by weight of the composition;

the concentration of the monocarboxylic acid, or monocarboxylate thereof, is from about 1 gram (acid equivalent weight)/L to about 250 grams (acid equivalent weight)/L; and

the composition comprises an amount of the monocarboxylic acid, or monocarboxylate thereof, sufficient to reduce the concentration of volatilized auxin herbicide in the vapor phase surrounding the composition by at least 10% relative to the concentration of volatilized auxin herbicide in the vapor phase surrounding an otherwise identical composition lacking the monocarboxylic acid, or monocarboxylate thereof.

18. The herbicidal composition of claim 17, wherein the composition comprises dicamba, or an agriculturally acceptable salt or ester thereof;

and acetic acid, or an agriculturally acceptable salt thereof.

19. The herbicidal composition concentrate of claim 17, wherein the composition comprises a non-auxin herbicide and satisfies one or more of the following conditions:

the sum of the concentration of auxin herbicide and the concentration of non-auxin herbicide is from about 1 gram (acid equivalent weight)/L to about 50 grams (acid equivalent weight)/L;

the acid equivalent weight ratio of auxin herbicide to non-auxin herbicide is from about 1;

5 to about 2;

1; and

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1.

20. The herbicidal composition of claim 19, wherein the composition comprises dicamba, or an agriculturally acceptable salt or ester thereof;

acetic acid, or an agriculturally acceptable salt thereof; and

glyphosate, or an agriculturally acceptable salt thereof.

21. The herbicidal composition concentrate of claim 19, wherein the composition comprises dicamba, or an agriculturally acceptable salt or ester thereof;

acetic acid, or an agriculturally acceptable salt thereof; and

glufosinate, or an agriculturally acceptable salt thereof.

22. An adjuvant composition for use in the preparation of an aqueous herbicidal application mixture, the composition comprising:

(a) acetic acid, or an agriculturally acceptable salt thereof; and

(b) alkali metal phosphate;

wherein the composition satisfies one or both of the following conditions;

the molar ratio of acetic acid, or agriculturally acceptable salt thereof, to alkali metal phosphate is from about 1;

5 to about 5;

1; and

the composition comprises an amount (acid equivalent weight) of the acetic acid, or agriculturally acceptable salt thereof, from about 2% to about 40% by weight of the composition.

24. The method of claim 22, wherein the aqueous herbicidal application mixture comprises dicamba, or an agriculturally acceptable salt or ester thereof;

and acetic acid, or an agriculturally acceptable salt thereof.

25. The method of claim 22, wherein the aqueous herbicidal application mixture further comprises a source of non-auxin herbicide.

26. The method of claim 25, wherein the application mixture satisfies one or more of the following conditions:

the sum of the concentration of auxin herbicide and the concentration of non-auxin herbicide is from about 1 gram (acid equivalent weight)/L to about 50 grams (acid equivalent weight)/L;

the acid equivalent weight ratio of auxin herbicide to non-auxin herbicide is from about 1;

5 to about 2;

1; and

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1.

27. The method of claim 25, wherein the application mixture comprises dicamba, or an agriculturally acceptable salt or ester thereof;

acetic acid, or an agriculturally acceptable salt thereof; and

glyphosate, or an agriculturally acceptable salt thereof.

28. The method of claim 25, wherein the application mixture comprises dicamba, or an agriculturally acceptable salt or ester thereof;

acetic acid, or an agriculturally acceptable salt thereof; and

glufosinate, or an agriculturally acceptable salt thereof.

23. A method of controlling the growth of auxin-susceptible plants, the method comprising the steps of:

preparing an aqueous herbicidal application mixture comprising an auxin herbicide;

a monocarboxylic acid, or a monocarboxylate thereof; and

water; and

applying a herbicidally effective amount of the application mixture to the auxin-susceptible plants;

wherein the application mixture satisfies one or more of the following conditions;

the molar ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 10;

1;

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1;

the composition comprises an amount (acid equivalent weight) of the monocarboxylic acid, or monocarboxylate thereof, from about 0.1% to about 25% by weight of the application mixture;

the concentration of the monocarboxylic acid, or monocarboxylate thereof, is from about 1 gram (acid equivalent weight)/L to about 250 grams (acid equivalent weight)/L; and

the application mixture comprises an amount of the monocarboxylic acid, or monocarboxylate thereof, sufficient to reduce the concentration of volatilized auxin herbicide in the vapor phase surrounding the application mixture by at least 10% relative to the concentration of volatilized auxin herbicide in the vapor phase surrounding an otherwise identical application mixture lacking the monocarboxylic acid, or monocarboxylate thereof.

29. A method of controlling off-site movement of an auxin herbicide, the method comprising the steps of:

preparing an aqueous herbicidal application mixture comprising an auxin herbicide;

a monocarboxylic acid, or a monocarboxylate thereof; and

water; and

applying a herbicidally effective amount of the application mixture to auxin-susceptible plants;

wherein the application mixture satisfies one or more of the following conditions;

the molar ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 10;

1;

the acid equivalent weight ratio of monocarboxylic acid, or monocarboxylate thereof, to auxin herbicide is from about 1;

10 to about 5;

1;

the composition comprises an amount (acid equivalent weight) of the monocarboxylic acid, or monocarboxylate thereof, from about 0.1% to about 25% by weight of the application mixture;

the concentration of the monocarboxylic acid, or monocarboxylate thereof, is from about 1 gram (acid equivalent weight)/L to about 250 grams (acid equivalent weight)/L; and

the application mixture comprises an amount of the monocarboxylic acid, or monocarboxylate thereof, sufficient to reduce the concentration of volatilized auxin herbicide in the vapor phase surrounding the application mixture by at least 10% relative to the concentration of volatilized auxin herbicide in the vapor phase surrounding an otherwise identical application mixture lacking the monocarboxylic acid, or monocarboxylate thereof.

30. The method of claim 29, wherein the application mixture comprises dicamba, or an agriculturally acceptable salt or ester thereof;

and acetic acid, or an agriculturally acceptable salt thereof.

31. The method of claim 29, wherein the application mixture comprises dicamba, or an agriculturally acceptable salt or ester thereof;

acetic acid, or an agriculturally acceptable salt thereof; and

glyphosate, or an agriculturally acceptable salt thereof.

32. The method of claim 29, wherein the application mixture comprises dicamba, or an agriculturally acceptable salt or ester thereof;

acetic acid, or an agriculturally acceptable salt thereof; and

glufosinate, or an agriculturally acceptable salt thereof.

33. A method of reducing the volatility of an auxin herbicide, the method comprising the step of contacting the auxin herbicide with a volatility-lowering effective amount of a monocarboxylic acid, or a monocarboxylate thereof.

34. The method of claim 33, wherein at least one of the following conditions is satisfied:

the molar ratio of the monocarboxylic acid, or monocarboxylate thereof, contacted with the auxin herbicide is from about 1;

10 to about 10;

1;

the acid equivalent weight ratio of the monocarboxylic acid, or monocarboxylate thereof, contacted with the auxin herbicide is from about 1;

10 to about 5;

1; and

the amount of the monocarboxylic acid, or monocarboxylate thereof, contacted with the auxin herbicide is sufficient to reduce the concentration of volatilized auxin herbicide in the vapor phase by at least 10% relative to the concentration of volatilized auxin herbicide in the vapor phase for an auxin herbicide in the absence of the monocarboxylic acid, or monocarboxylate thereof.

35. The method of claim 34, wherein the auxin herbicide comprises dicamba, or an agriculturally acceptable salt or ester thereof;

and the monocarboxylic acid, or monocarboxylate thereof, is acetic acid, or an agriculturally acceptable salt thereof.

36. A method of counseling an individual on the application of an auxin herbicide to auxin-susceptible plants, the method comprising:

(a) identifying a source of an auxin herbicide;

(b) instructing the individual to prepare an aqueous herbicidal application mixture from the source of auxin herbicide; and

(c) additionally instructing the individual to supplement the application mixture with a monocarboxylic acid, or monocarboxylate thereof, prior to the application of the application mixture to the auxin-susceptible plants.

37. The method of claim 36, wherein the auxin herbicide comprises dicamba, or an agriculturally acceptable salt or ester thereof;

and the monocarboxylic acid, or monocarboxylate thereof, is acetic acid, or an agriculturally acceptable salt thereof.

38. A method of counseling an individual on the application of an auxin herbicide to auxin-susceptible plants, the method comprising:

(a) identifying a source of an auxin herbicide;

(b) identifying a source of a monocarboxylic acid, or a monocarboxylate thereof; and

(c) instructing the individual to prepare an aqueous herbicidal application mixture from the source of auxin herbicide and the source of monocarboxylic acid, or monocarboxylate thereof, for application to the auxin-susceptible plants.

39. The method of claim 38, wherein the auxin herbicide comprises dicamba, or an agriculturally acceptable salt or ester thereof;

and the monocarboxylic acid, or monocarboxylate thereof, is acetic acid, or an agriculturally acceptable salt thereof.