PROBLEM TO BE SOLVED: To provide a bioactive granular matter in which, after being scattered into a seedling box, a paddy field and a dry field, released over a long period while suppressing the release speed of the bioactive substance at the initial stage after application, and also having satisfactory settling properties into water when being applied to a paddy field.SOLUTION: Provided is a bioactive granular matter composed of: an inner core (A) made of a water-soluble substance being solid at ordinary temperature (excluding urea) and having a grain size of 0.1 to 5 mm and a covering layer covering the inner core and comprising a bioactive substance (B) and a polyurethane resin (C).COPYRIGHT: (C)2015,JPO&INPIT【課題】 育苗箱、水田及び畑地に散布した時、施用後初期の生物活性物質の放出速度を抑制しつつ長期間にわたって放出され、また水田に施用される場合、水中への沈降性が良好である生物活性粒状物を提供すること。【解決手段】 (A)常温で固体の水溶性物質(但し、尿素を除く。)からなる、粒径が0.1~5mmの内核と、該内核を被覆し、(B)生物活性物質及び(C)ポリウレタン樹脂を含有する被覆層とから構成される生物活性粒状物。【選択図】 なし
