Many active agents, such as insecticides, herbicides and fungicides are relatively insoluble in aqueous media. In order to apply them efficiently to crops it is thus necessary to formulate them in a manner that facilitates their dilution in the water based spray media used in practice, by the farmer or contract spray operator. The present invention relates to aqueous dispersions of active agents such as insecticides, herbicides and fungicides, in particular such dispersions in which the particles are of sub-micron diameter.
