Selective post-emergence herbicide. Prepn: JP Kokai 81 75408 (1981 to Nippon Soda), C.A. 95, 110175e (1981). Activity: C. M. Knott, Proc. Br. Crop Prot. Conf. - Weeds 1980, 39; G. H. Ingram et al., ibid. 91.