PROBLEM TO BE SOLVED: To provide a method for suppressing replant failure and bacterial wilt disease of tomatoes to be an effective means for an agricultural production phase, especially for suppressing replant failure and bacterial wilt disease of tomatoes and solving a practical problem because of being inexpensively realized. SOLUTION: This method for suppressing replant failure and bacterial wilt disease of tomatoes comprises mixing carbonized matter containing≥2 mass % of CaO obtained by carbonization with raising soil or raising seedling culture soil for tomatoes. COPYRIGHT: (C)2005,JPO&NCIPI