Provided is an agrochemical composition for foliage treatment, which does not cause phytotoxicity to a cultivated crop due to adhesion thereto when foliage treatment of an upland field is performed with pyroxasulfone, but has a high level of safety and an herbicidal effect on a broad spectrum of weeds. The agrochemical composition for foliage treatment comprises pyroxasulfone and a masking material that masks the pyroxasulfone, wherein the pyroxasulfone is microencapsulated in or coated with the masking material such that phytotoxicity to a cultivated crop due to adhesion thereto when foliage spraying is performed is avoided.
