PROBLEM TO BE SOLVED: To provide an agricultural material for suppressing or controlling scab of potato or the like without using any agrochemicals, and to provide a controlling method using the agricultural material. SOLUTION: The agricultural material for controlling scab of potato or the like comprises microorganisms having the activity against scab as active ingredient. In the agricultural material, the microorganisms are preferably bacteria, Streptomyces, filamentous fungi or yeast. COPYRIGHT: (C)2005,JPO&NCIPI