Referred to a control Agent to be applied to the soil for Plant cultivation, which comprises 3 - Chloro - N - (3 - Chloro - 5 - trifluoromethyl - 2 - pyridyl) - alpha, Alpha, Alpha trifluor - 2.6 - dinitro - P - TOLUIDINE as an active ingredient. Also refers to a control method for the soft Rot which uses the control AgentREFERIDO A UN AGENTE DE CONTROL PARA SER APLICADO AL SUELO DE CULTIVO DE LA PLANTA, QUE COMPRENDE 3-CLORO-N-(3-CLORO-5-TRIFLUORMETIL-2-PIRIDIL)-ALFA, ALFA, ALFA-TRIFLUOR-2,6-DINITRO-P-TOLUIDINA COMO UN INGREDIENTE ACTIVO. YAMBIEN SE REFIERE A UN METODO DE CONTROL PARA LA PODREDUMBRE BLANDA QUE EMPLEA EL AGENTE DE CONTROL