FIELD: agriculture.SUBSTANCE: invention relates to agriculture. To obtain a granulate containing prohexadione-calcium and an inorganic sulphate, method comprises fluidised bed granulation of an aqueous dispersion comprising prohexadione-calcium and an aqueous solution comprising at least one inorganic sulphate.EFFECT: invention makes it possible to improve the regulation of plant growth.14 cl, 6 dwg, 1 tbl, 3 ex