A composition comprising a pesticide and a certain carboxylic acid amide, i.e. isononanoic acid N,N-dimethyl amide, is described herein. Also disclosed is 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 composition is allowed to act on the respective pests, the habitat 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. Furthermore, use of the carboxylic acid amide as a solvent for pesticides with no or low phytotoxicity is described.
