A plant treatment composition comprising: an aqueous phase comprising a plant nutrient； and an organic phase comprising a substituted urea or substituted thiourea compound dissolved in an organic solvent； and an emulsifier； wherein the composition is in the form of an emulsion having droplets of the organic phase dispersed in the aqueous phase for use with, most beneficially, soybean plants. Preferably, the aqueous phase contains calcium (0.1 to 15 % w/w) and/or magnesium (0.1 to 15 % w/w) and/or zinc (0.1 to 5 % w/w) and/or iron (0.1 to 5 % w/w). Preferably, the organic phase contains diphenylurea (DPU) (50 to 400 ppm. Preferably, the organic solvent is N,N-dimethyl decanamide. Preferably, the emulsifier is one of ethoxylated coco amine or ethoxylated isotridecyl alcohol. Preferably the composition or dilution is applied as a foliar spray. Preferably, the emulsion is a microemulsion. Also claimed is a method of making the plant treatment composition.
