The present invention relates to N-cycloalkyl- benzyl-thiocarboxamideor N-cycloalkyl-benzyl-N-substituted-carboximidamicle amide derivativesof formula (I) wherein A represents a carbo-linked, unsaturated or partiallysaturated, 5-membered heterocyclyl; T represents S, N-R a, N-OR a, N-NR a R bor N-CN;Z1 represents a C3-C7-cycloalkyl and Z2; Z3, X and n represent varioussubstituents;their process of preparation; their use as fungicide active agents,particularly in theform of fungicide compositions and methods for the control of phytopathogenicfungi, notably of plants, using these compounds or compositions.