The purpose of the present invention is to provide an agrochemical composition for foliage treatment which does not cause chemical damage due to deposition on cultivated crop and is highly safe when carrying out foliage treatment on farmland using pyroxasulfone and also has a broad herbicidal spectrum. Provided is an agrochemical composition for foliage treatment that includes pyroxasulfone and a concealing substance for concealing the pyroxasulfone and the agrochemical composition for foliage treatment is characterized in that the concealing substance microencapsulates or covers the pyroxasulfone such that there is no chemical damage due to deposition on cultivated crop during foliage application.