PROBLEM TO BE SOLVED: To show a high control effect against diseases of fruit trees or vegetables such as bacterial diseases such as citrus canker, filamentous fungal diseases such as strawberry powdery mildew, etc., and to prevent phytotoxicity to crops without causing environmental pollution. To provide a method for controlling agricultural and horticultural diseases that is safe for humans and animals and does not cause it. A method for controlling a disease for agricultural and horticultural purposes, which comprises preventing or treating a disease of a fruit tree or a vegetable caused by a pathogenic bacterium using a peracetic acid preparation containing 0.01 wt% to 2 wt% of peracetic acid as an active ingredient. . [Selection diagram] None【課題】カンキツかいよう病などの細菌病、イチゴうどんこ病などの糸状菌病などの、果樹または野菜の病害に対して、高い防除効果を示し、環境汚染を引き起こすことなく、また作物に薬害を生じさせることもない、人畜に安全な農園芸用病害防除方法を提供すること。【解決手段】有効成分として過酢酸を０．０１ｗｔ％～２ｗｔ％含有する過酢酸製剤を用いて、病原菌による果樹または野菜の病害を予防または治療することを特徴とする、農園芸用病害防除方法。【選択図】なし
