The invention provides an aqueous SC formulation comprising: a) 50 to 80 % w/v pyrimethanil b) 0.2 to 5 % w/v of a polyoxyethylene-polyoxypropylene block copolymer surfactant and c) 0.2 to 5 % w/v of a naphthalene formaldehyde condensate surfactant. We have found that formulations according to the invention surprisingly do not solidify when milled during manufacture and also exhibit a low propensity to crystallise when stored for prolonged periods.
