A tank-mix is disclosed herein including a) 1,2-cyclohexandicarboxylic acid diisononyl ester, b) a mixture of anionic surfactants selected from b1) alkylbenzenesulfonates and b2) sulfosuccinate, and c) a nonionic surfactant. A weight % ratio of b1):b2) is 3:1 to 20:1 and a weight % ratio of anionic surfactants to nonionic surfactant is b1)+b2)≥；c).A spray mix is further disclosed including said tank mix and a pesticide. A process is also disclosed for the preparation of said spray mix； and to a method for controlling phytopathogenic fungi and/or undesirable plant growth and/or undesirable insect or mite infestation and/or for regulating the growth of plants. The method includes allowing the spray mix to act on the respective pests, the habit thereof or the plants to be protected from the respective pest, on the soil and/or on undesirable plants and/or the crop plants and/or the habitat thereof.
