The present invention relates to a method for preparing a tank mix comprising the steps of contacting a pesticide formulation, water and an adjuvant for tank mix, wherein the tank mix adjuvant comprises a mixture of an alkali carbonate and an alkali bicarbonate. A method as described above, comprising a base, wherein the tank mix adjuvant is present in the form of an aqueous liquid containing at least 50 g / l of base or in the form of a particulate solid containing at least 10% by weight of base. The invention also relates to the use of a tank mix adjuvant for increasing the effectiveness of a pesticide, wherein the tank mix adjuvant comprises a base comprising a mixture of an alkali carbonate and an alkali bicarbonate, The use as described above, wherein the tank mix adjuvant is present in the form of an aqueous liquid containing at least 50 g / l of base, or in the form of a particulate solid containing at least 10% by weight of base； auxiliary agent, alkali carbonate and A tank mix adjuvant comprising a base comprising a mixture of alkali bicarbonates, wherein the tank mix adjuvant is present in the form of an aqueous liquid containing at least 50 g / l base； an auxiliary agent and an alkali carbonate And an admixture for a tank mix comprising a base comprising a mixture of alkaline bicarbonate, at least 10 wt. The tank mix adjuvant, present in the form of a particulate solid containing the base of: a method for controlling phytopathogenic fungi and / or undesirable vegetation and / or unwanted insect or tick attack, and / or plant A method for regulating growth, wherein the tank mix is applied to the respective pests, their environment, or plants protected from the respective pests, to the soil and / or undesired plants and / or crop plants and / or The present invention relates to the above-described method that acts on these environments. [Selection figure] None本発明は、殺有害生物薬製剤、水及びタンクミックス用アジュバントを接触させるステップを含む、タンクミックスの調製方法であって、タンクミックス用アジュバントが、アルカリ炭酸塩及びアルカリ炭酸水素塩の混合
