Monsanto Company

Masus Kuchikata

Tatsuo Sato

A concentrate package-mix composition comprising a water-soluble pesticide or plant growth regulator, for example a salt of the herbicide glyphosate, and a solid water-insoluble pesticide or plant growth regulator, for example the herbicide flumioxazin, is provided. The water-soluble pesticide or plant growth regulator is dissolved in a continuous aqueous phase of the composition and solid particles of the water-insoluble pesticide or plant growth regulator are suspended in the aqueous phase. These solid particles, individually or plurally, are intimately surrounded by a barrier layer, which comprises either one or both of a water-immiscible organic solvent or an emulsifying agent that has a hydrophile-lipophile balance (HLB) not greater than about 15. Optionally the composition further comprises a viscosity modifying agent, such as colloidal hydrophilic silica, dispersed in the aqueous phase. Compositions of the invention exhibit enhanced resistance to settling of the solid particles and/or enhanced resistance to chemical degradation of the water-insoluble pesticide or plant growth regulator by comparison with otherwise similar compositions lacking the barrier layer or the organic solvent.

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Ibaraki, Japan

Masus Kuchikata