Herbicide formulation

1. An herbicide formulation comprising:

(a) an aqueous phase;

(b) an 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor in suspension in the aqueous phase, wherein the 4-hydroxyphenylpyruvate dioxygenase (HPPD) inhibitor is a triketone;

(c) an encapsulated chloroacetamide and/or an isoxazoline herbicide in suspension in the aqueous phase;

(d) glyphosate and/or glufosinate, or an agrochemically acceptable salt thereof, in solution in the aqueous phase; and

(e) toluene sulfonic acid.

2. An herbicide formulation according to claim 1 , which is a pre-mix concentrate comprising:

(a) an aqueous phase;

(b) 10-600 g/l HPPD inhibitor in suspension in the aqueous phase;

(c) 10-6000 g/l chloroacetamide and/or an isoxazoline herbicide which is encapsulated and in suspension in the aqueous phase;

(d) 10-3000 g/l glyphosate and/or glufosinate, or an agrochemically acceptable salt thereof, in solution in the aqueous phase; and

(e) a structuring agent; and

(f) toluene sulfonic acid.

3. An herbicide formulation according to claim 1 , wherein the triketone is mesotrione or tembotrione.

4. An herbicide formulation according to claim 1 , wherein the chloroacetamide is present and is selected from the group consisting of alachlor, acetochlor, dimethenamid, metolachlor and S-metolachlor.

5. An herbicide formulation according to claim 4 , wherein the chloroacetamide is S-metolachlor.

6. An herbicide formulation according to claim 1 , wherein component (d) is potassium glyphosate.

7. A process for the preparation of an herbicide formulation according to claim 2 , said process comprising the steps of:

(a) separately preparing (i) an HPPD inhibitor mill base, (ii) a chloroacetamide or an isoxazoline herbicide capsule suspension and (iii) a glyphosate and/or glufosinate soluble concentrate;

(b) combining components (i), (ii) and (iii) above whilst mixing;

(c) adding a structuring agent whilst still mixing; and

(d) optionally adjusting the pH to from about 3 to 7.

8. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 1 to a locus of the unwanted vegetation.

9. An herbicide formulation according to claim 1 , wherein the triketone is mesotrione.

10. An herbicide formulation according to claim 9 , wherein the chloroacetamide is present and is selected from the group consisting of alachlor, acetochlor, dimethenamid, metolachlor and S-metolachlor.

11. An herbicide formulation according to claim 10 , wherein component (d) is potassium glyphosate.

12. An herbicide formulation comprising:

(a) an aqueous phase;

(b) mesotrione;

(c) an encapsulated chloroacetamide in suspension in the aqueous phase, wherein the chloroacetamide is metolachlor, S-metolachlor, or acetochlor;

(d) glyphosate or an agrochemically acceptable salt thereof, in solution in the aqueous phase; and

(e) toluene sulfonic acid in an appropriate amount to provide a pH of from about 3 to about 7.

13. An herbicide formulation according to claim 12 , wherein the chloroacetamide is S-metolachlor.

14. An herbicide formulation according to claim 13 , wherein component (d) is potassium glyphosate.

15. A process for the preparation of an herbicide formulation according to claim 12 , said process comprising the steps of:

(a) separately preparing (i) a mesotrione mill base, (ii) an encapsulated chloroacetamide suspension and (iii) a glyphosate soluble concentrate;

(b) combining components (i), (ii) and (iii) above whilst mixing;

(c) adding a structuring agent whilst still mixing; and

(d) adjusting the pH to from about 3 to about 7 via the toluene sulfonic acid.

16. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 12 to a locus of the unwanted vegetation.

17. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 13 to a locus of the unwanted vegetation.

18. A process for the control of unwanted vegetation, said process comprising the application of a herbicidally effective amount of a herbicide formulation according to claim 14 to a locus of the unwanted vegetation.