PROBLEM TO BE SOLVED: To provide a fungicidal composition which overcomes such problems of most of conventional fungicidal compositions that they have several practical problems such as inadequacy in either of a preventive effect and a curing effect, inadequacy in residual effect, and inadequacy in an effect of controlling plant diseases depending on the application site.SOLUTION: The fungicidal composition contains as an active ingredient an acid amide derivative represented by formula (I) or a salt thereof (wherein A is (substituted) phenyl, (substituted) benzyl, (substituted) naphthyl, (substituted) heterocyclic, (substituted) fused heterocyclic, or the like B is (substituted) heterocyclic, (substituted) fused heterocyclic, or (substituted) naphthyl R1 and R2 are each independently an alkyl or the like R3 is a hydrogen atom or the like and W1 and W2 are each independently an oxygen atom or a sulfur atom).COPYRIGHT: (C)2007,JPO&INPIT【課題】 従来から提供されている多くの殺菌性組成物は、予防効果と治療効果のいずれか一方が不十分であったり、残効性が不十分であったり、或は、施用場面によっては植物病害に対する防除効果が不十分であったりするなど、実用上いくつかの問題点を抱えており、このような問題点を克服した殺菌性組成物が希求されている。【解決手段】【化1】[式中、Aは置換可フェニル、置換可ベンジル、置換可ナフチル、置換可複素環、置換可縮合複素環等であり;Bは置換可複素環、置換可縮合複素環又は置換可ナフチルであり;R1及びR2は各々独立にアルキル等であり;R3は水素原子等であり;W1及びW2は各々独立に酸素原子又は硫黄原子である]で表される酸アミド誘導体又はその塩を有効成分として含有する殺菌性組成物を提供する。【選択図】 なし
