PROBLEM TO BE SOLVED: To provide an agrochemical composition for foliage treatment that does not cause adhesion agrochemical injury to cultivated crops when pyroxasulfone is applied for foliage treatment, has a high safety property, and has a wide range of herbicidal spectrum.SOLUTION: An agrochemical composition for foliage treatment contains a pyroxasulfone having a volume-based particle diameter d (0.5) corresponding to 50% of a cumulative particle diameter of 100 μm or less, and a concealing substance concealing the pyroxasulfone, in which the concealing substance micro-encapsulates or covers the pyroxasulfone so as not to cause adhesion agrochemical injury to cultivated crops during foliage scattering. Further, the agrochemical composition can also be applied for foliage treatment in non-agricultural crop lands. The agrochemical composition for foliage treatment has the concealing substance which is a substance selected from polyurea, polyurethane, polyamide, ethyl cellulose, hydrogenated fats and oils, shellac and the like.SELECTED DRAWING: None【課題】ピロキサスルホンを茎葉処理した場合に、栽培作物への付着薬害を起こすことがなく、安全性が高く、かつ、広範な除草スペクトラムを有する茎葉処理用農薬組成物の提供。【解決手段】積算粒子径の５０％に相当する体積基準の粒子径ｄ（０．５）が１００μｍ以下であるピロキサスルホンと、該ピロキサスルホンを隠蔽する隠蔽物質と、を含む茎葉処理用農薬組成物であって、前記隠蔽物質が、茎葉散布時に栽培作物への付着薬害を起こさないように、該ピロキサスルホンをマイクロカプセル化又は被覆している茎葉処理用農薬組成物である。また、その農薬組成物は非農耕地での茎葉処理も可能である。前記隠蔽物質が、ポリウレア、ポリウレタン、ポリアミド、エチルセルロース，硬化油脂類、セラック等から選択される物質である、茎葉処理用農薬組成物。【選択図】なし
