The present invention relates to an agrochemical composition comprising dicamba or its salt, a sulfonamide herbicide free acid and a solid base. The present invention also relates to a method of controlling field weeds with the use of the said composition. Furthermore, the present invention relates to a method of reducing and/or removing agrochemical composition residues in an application tank, as well as a method of preparing an agrochemical composition, comprising the mixing of a solid base with dicamba or its salt and a sulfonamide herbicide free acid.