PROBLEM TO BE SOLVED: To obtain an agrochemical composition having excellent diffusivity without collecting an agrochemical active ingredient in a treated site in the agrochemical composition directly thrown into a flooded paddy field and sprayed, especially a conventionally difficult labor-saving spraying formulation comprising an agrochemical active ingredient which is a liquid at normal temperature and a conventionally difficult agrochemical composition comprising the agrochemical active ingredient which is a liquid at normal temperature at a high concentration.SOLUTION: This agrochemical composition is obtained by supporting the agricultural active ingredient and, as necessary, a surfactant on a granular core coated wit a water-soluble polymer or a water-swellable substance. The method for spraying an agrochemical granule comprises directly throwing the agrochemical composition in an amount of 20-2,000 g based on 10 a of the flooded paddy field or packaging the agrochemical composition in an amount of 10-100 g based on one bag in a water-soluble film and directly throwing 2-20 bags.COPYRIGHT: (C)2002,JPO【課題】 湛水下の水田に直接投げ入れて散布する農薬組成物において、処理地点に農薬活性成分が留まることなく、優れた拡散性を有した組成物を提供し、特に、これまで難しかった、常温で液体の農薬活性分を含有する省力散布製剤並びに常温で液体の農薬活性分を高濃度に含有した農薬組成物を提供すること。【解決手段】 水溶性高分子あるいは水膨潤性物質で被覆された粒核に、農薬活性成分および必要により界面活性剤を担持させて成る農薬組成物およびこれを、湛水下の水田10a当りに20g~2000g直接投げ入れるか、あるいは水溶性フィルムに1袋当り10g~100gを包装し、2~20個直接投げ入れる農薬粒剤の散布方法。
