Fuente: WIPO "tomato" The invention relates to novel agrochemical compositions comprising: a) at least one triazole fungicide; b) carbonyl containing solvent; and c) N-alkyl pyrrolidone of formula (I) wherein R1 is a straight or branched, saturated or unsaturated, substituted or unsubstituted hydrocarbon group having from 5 to 10 carbon atoms. The invention also relates to the use of a combination of the abovementioned N-alkyl pyrrolidone of formula (I) with a carbonyl containing solvent for increasing the efficacy of one or more triazole fungicide. The invention further relates to an agrochemical composition comprising: a) at least one triazole fungicide; b) a carbonyl containing solvent; c) N-alkyl pyrrolidone of formula (I) and d) an effective amount of compound of formula (II) wherein R2 is linear or branched, saturated or unsaturated alkyl radical having from 14 to 20 carbon atoms; or R2 is linear or branched, saturated or unsaturated acyl radical having from 14 to 20 carbon atoms; or any combination thereof, Z is selected from oxygen or nitrogen atom, m is an integer equal to 2, n is an integer equal to 3, x is an integer of from 3 to 50 and y is an integer of from 0 to 50. The invention relates to the use of a compound of formula (II) for increasing the efficacy of one or more triazole fungicide; and to a method of treating plants or plant parts with a combination of one or more triazole(s) fungicide with compound of formula wherein the compound of formula (II) is for increasing the efficacy of the one or more triazole(s).