PROBLEM TO BE SOLVED: To provide a composition for controlling a soil infectious disease of a plant and a method for controlling a soil infectious disease, which can effectively control a soil infectious disease of a plant by applying a plurality of inorganic substances containing an alkaline component in combination. To do. SOLUTION: Among (1) at least one selected from calcium carbonate, magnesium carbonate and magnesium silicate, (2) trace elements, (3) at least one selected from silicon dioxide and iron oxide, (1 ) And (2) combination, (1) and (3) combination, and (1), (2) and (3) combination composition containing a composition for controlling soil infectious diseases from seeding to raising seedlings. In the meantime, it is applied to the nursery soil or the plant itself. [Selection diagram] None【課題】アルカリ性成分を含む複数の無機物を組合せて施用することにより、植物の土壌伝染病を効果的に防除できるようにした、植物の土壌伝染病防除用組成物及び土壌伝染病防除方法を提供する。【解決手段】（１）炭酸カルシウム、炭酸マグネシウム及びケイ酸マグネシウムから選ばれた少なくとも１種、（２）微量要素、（３）二酸化ケイ素及び酸化鉄から選ばれた少なくとも１種のうち、（１）と（２）の組み合わせ、（１）と（３）の組み合わせ、（１）と（２）と（３）の組み合わせを含有する土壌伝染病防除用組成物を、植物の播種から育苗期の間に、育苗培土又は植物自体に付与する。【選択図】なし
