PROBLEM TO BE SOLVED: To provide a sustained release soil disease control agent, capable of being added to soil by soil-mixing treatment or the like, having low plant growth-inhibiting activities, and capable of effectively controlling hardly controllable soilborne diseases such as bacterial wilt disease and actinomycosis.SOLUTION: The granular sustained release soil disease control agent is obtained by adding an aqueous solution of an adhesive compound such as an ethylene-vinyl acetate resin emulsion to a compound represented by formula (I) (wherein, R is 1-6C alkyl or hydrogen and n is a number of substituted hydroxy groups, and an integer of 2-5) such as ethyl gallate, kneading the resultant mixture by a mortar, adding inorganic fine particles such as silica thereto, kneading the resultant mixture, drying the kneaded product and pulverizing the dried product on the mortar.COPYRIGHT: (C)2011,JPO&INPIT【課題】 土壌混和処理等によって土壌に添加でき、植物生育阻害活性が低く且つ青枯病や放線菌病などの難防除土壌病害を効果的に防除できる徐放性土壌病害防除剤を提供する。【解決手段】 エチレン―酢ビ樹脂エマルションなどの接着性化合物の水溶液を没食子酸エチルなどの式(I)で表される化合物に加えて、乳鉢で混練し、さらにこれにシリカなどの無機微粒子を加えて、混練し、これを乾燥させて、乳鉢で解砕して粉粒状の徐放性土壌病害防除剤を得た。(式(I)中、RはC1~6アルキル基または水素原子を示す。nは水酸基の置換数を示し、2~5の整数である。)【選択図】なし
