Plant treatment composition

A plant treatment composition comprising:

• an aqueous phase comprising a plant nutrient;
• an organic phase comprising a substituted urea compound, dissolved in an organic solvent;
• and
• an emulsifier comprising an ethoxylated coco amine, where the ethoxylated chain length is in a range of 8 to 15 and/or an ethoxylated isotridecyl alcohol;
• wherein the composition is at a pH of 1 to 4 and is in the form of an emulsion having droplets of the organic phase dispersed in the aqueous phase, the droplets having a size of less than 100 nm,
• wherein the plant nutrient is water soluble and dissolved in the aqueous phase;
• wherein the organic solvent has a solubility in water of less than 10 g/L and comprises or consists of capric acid dimethylamide,
• wherein the substituted urea compound is selected from diphenyl urea, 2-nitro diphenyl urea, mono- or di-methyl diphenyl urea, mono- or di-ethyl diphenyl urea and 1,3-diethyl-1,3-diphenyl urea,
• wherein the plant treatment composition comprises the substituted urea compound in a range of from 50 to 400 ppm, based on the total weight of the plant treatment composition,
• wherein the composition further comprises from 4% to 12% w/w calcium and from 0.1% to 5% w/w zinc, based on the total weight of the plant treatment composition, and
• wherein the emulsion remains homogeneous during two weeks of storage between −18 and +40° C.