PROBLEM TO BE SOLVED: To provide a plant disease controlling agent which comprises a compound reinforcing the defence force of plants as an effective component.SOLUTION: The plant disease controlling agent containing a terpenoid-related compound, particularly, sclareol as an effective component exhibits a plant disease controlling effect of increasing the defence force of plants and deriving disease resistance and is effective to various plant diseases such as a bacterial wilt disease, a damping-off disease, botrytis cinerea, burkholderia plantarii, burkholderia glumae and gibberella fujikuroi.COPYRIGHT: (C)2012,JPO&INPIT【課題】植物の防御力を増強させる化合物を有効成分として含有してなる植物病害防除剤を提供する。【解決手段】テルペノイド関連化合物、特にはスクラレオールを有効成分として含有する植物病害防除剤は、植物の防御力を高めて耐病性を誘導する植物病害防除効果を示し、青枯病、立枯病、灰色かび病、イネ苗立枯細菌病、イネもみ枯細菌病、イネばか苗病等の各種植物病害に対して有効である。【選択図】図4
