There is provided a microcapsule for plant disease control. The microcapsule of the present invention that is a microcapsule in which a core material containing a fungicidal active ingredient is enclosed within a shell material, wherein the microcapsule satisfies the following conditions (1) and (2) is a formulation that withstands physical impacts, drying and diluting, and suitable for seed treatment using a stirring type machine, and the durability of control of diseases of crops and the safety for the crops can be improved more efficiently by the microcapsule of the present invention,.condition (1): D50/T 230.condition (2): (D90 - D10)/D50 2.5 wherein in the formulae of conditions (1) and (2), T represents the shell thickness (μm) of the microcapsule, D10 represents the 10% cumulative volume particle diameter (μm) of the microcapsule, D50 represents the 50% cumulative volume particle diameter (μm) of the microcapsule, and D90 represents the 90% cumulative volume particle diameter (μm) of the microcapsule.本發明提供用於防治植物疾病之微膠囊。本發明之微膠囊為其中含有殺真菌活性成分之核心材料被包封在殼材料內的微膠囊,其中該微膠囊為符合下面條件(1)及(2)調合物,其可承受物理衝擊、乾燥及稀釋並適用於使用攪拌型機器處理種子,且本發明之微膠囊可更有效地改善防治作物疾病之持久性及對作物之安全性,.條件(1):D50/T≦230.條件(2):(D90-D10)/D50≦2.5其中在條件(1)及(2)之公式中,T代表該微膠囊之殼的厚度(微米),D10代表該微膠囊之10%累積體積粒徑(微米),D50代表該微膠囊之50%累積體積粒徑(微米),且D90代表該微膠囊之90%累積體積粒徑(微米)。
