Use of dithiine-tetracarboximides of the general formula (I) in which R1 and R2 are identical or different and represent hydrogen, represent C1-C8 alkyl which is, where appropriate, monosubstituted or polysubstituted with halogen, -OR3, -COR4, they represent C3-C7 cycloalkyl which is, where appropriate, monosubstituted or polysubstituted with halogen, C1-C4 alkyl or C1-C4 haloalkyl, or represent aryl or aryl- (C1-C4 alkyl), each of which is, where appropriate , monosubstituted or polysubstituted with halogen, C1-C4 alkyl, C1-C4 haloalkyl, -COR4 or sulfonylamino, R3 represents hydrogen, C1-C4 alkyl, C1-C4 alkylcarbonyl, or represents aryl which is, where appropriate, monosubstituted or polysubstituted with halogen , C1-C4 alkyl or C1-C4 haloalkyl, R4 represents hydroxyl, C1-C4 alkyl or C1-C4 alkoxy, n represents 0 or 1 in the protection against phytopathogenic fungi of fruits or vegetables collected.Uso de ditiina-tetracarboximidas de la fórmula general (I) en la que R1 y R2 son idénticos o diferentes y representan hidrógeno, representan alquilo C1-C8 que está, dado el caso,monosustituido o polisustituido con halógeno, -OR3, -COR4, representan cicloalquilo C3-C7 que está, dado elcaso, monosustituido o polisustituido con halógeno, alquilo C1-C4 o haloalquilo C1-C4, o representan arilo o aril-(alquilo C1-C4), cada uno de los cuales está, dado el caso, monosustituido o polisustituido con halógeno, alquiloC1-C4, haloalquilo C1-C4, -COR4 o sulfonilamino, R3 representa hidrógeno, alquilo C1-C4, alquilcarbonilo C1-C4, o representa arilo que está, dado el caso,monosustituido o polisustituido con halógeno, alquilo C1-C4 o haloalquilo C1-C4, R4 representa hidroxilo, alquilo C1-C4 o alcoxi C1-C4, n representa 0 o 1 en la protección contra hongos fitopatógenos de frutas u hortalizas recolectadas.
