Stable formulations containing fumed aluminum oxide

1. A suspoemulsion concentrate composition comprising:

i) an aqueous suspension concentrate composition containing pyroxasulfone and atrazine;

ii) an emulsion in water composition containing fluthiacet-methyl; and

iii) fumed alumina.

2. The suspoemulsion concentrate composition of claim 1 wherein the aqueous suspension concentrate further comprises one or more of a surfactant component, a pH adjuster, an anti-freeze agent, an antifoam agent, a thickening agent and anti-microbial agent.

3. The suspoemulsion concentrate composition of claim 1 wherein the emulsion in water concentrate further comprises one or more of a surfactant component, a pH adjuster, an anti-freeze agent, an antifoam agent, a thickening agent and anti-microbial agent.

4. The composition of claim 1 wherein the weight ratio of fluthiacet-methyl to pyraxosulfone to atrazine is from 1:33:284 to 1:40:325.

5. A process for the preparation of a suspoemulsion composition comprising:

i) forming an aqueous suspension concentrate composition containing pyroxasulfone and atrazine;

ii) forming an emulsion in water composition containing fluthiacet-methyl;

iii) blending the suspension concentrate and emulsion in water compositions together and

iv) adding fumed alumina and blending the mixture to form a homogenous mixture.

6. A process for the preparation of a suspoemulsion composition comprising:

i) forming an aqueous suspension concentrate composition containing pyroxasulfone and atrazine and fumed alumina;

ii) forming an emulsion in water composition containing fluthiacet-methyl;

iii) blending the suspension concentrate and emulsion in water compositions together to form a homogenous mixture.

7. An aqueous suspension concentrate composition comprising:

i) an agriculturally active component comprising fluthiacet-methyl, atrazine and pyroxasulfone;

ii) a surfactant component comprising an acrylic graft copolymer and a polyalkylene oxide block copolymer;

iii) an antifoam agent;

iv) a biocide;

v) a pH adjusting agent;

vi) an antifreeze agent; and

vii) fumed alumina.