The present invention relates to a tank-mix consisting of a) 1,2-cyclohexandicarboxylic acid diisononyl ester, b) a mixture of anionic surfactants selected fromb1) alkylbenzenesulfonates and b2) sulfosuccinate, and c) a nonionic surfactant, wherein the weight% ratio of b1):b2) is 3:1 to 20:1 and wherein the weight% ratio of anionic surfactants to nonionic surfactant is b1) + b2) =c. The invention further relates to a spray mix comprising said tank mix and a pesticide. The invention further relates to a process 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, wherein the spray mix is allowed 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. The present invention comprises combinations of preferred features with other preferred features.
