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 to upland field for foliage treatment, that has a high safety property, can maintain long-term efficacy and has a wide herbicidal spectrum.SOLUTION: An agrochemical composition for foliage treatment contains a pyroxasulfone and a concealing substance for concealing the pyroxasulfone, in which the concealing substance is a polyurethane and/or polyurea produced via reaction between an aliphatic isocyanate or aromatic isocyanate, or isocyanate containing both of them, and a water-soluble active hydrogen-containing compound. The polyurethane and/or polyurea micro-encapsulates 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 land.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】ピロキサスルホンで畑地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、長期間の薬効を持続でき、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】ピロキサスルホンと、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、脂肪族イソシアネート又は芳香族イソシアネートまたは、その両方を含むイソシアネートと水溶性活性水素含有化合物との反応を経て生成されるポリウレタン及び/又はポリウレアであって、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、該ポリウレタン及び/又はポリウレアがピロキサスルホンをマイクロカプセル化している茎葉処理用農薬組成物。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。【選択図】なし
