An object of the present invention is to provide a method for suppressing nodular disease which can achieve a high suppressive effect by a simple operation. The method for suppressing nodular disease of the present invention is a method for suppressing nodular disease by applying nano-bubble water to plants.本發明的課題在於提供一種可藉由簡便的操作而達成高抑制效果的根瘤病的抑制方法。本發明的根瘤病的抑制方法為將奈米氣泡水施用於植物體的根瘤病的抑制方法。
