Sulfonylurea herbicides, processes for their preparation and their use.

UREA SULFONYL of general formula (I), wherein R.sup.1 GROUP OR GROUP ETHYL METHYL; R2 is C 1 - C3 - alkoxycarbonyl, a C1 - C2 ALKYL, carrying 1 to 5 fluorines, METHYLSULFONYL, dimethylaminosulfonyl, thiomethyl, methyl sulfoxide, methylsulfonyloxy, trifluoromethoxy, difluoromethoxy, DIFLUORCLOROMETOXI, BIFLUORCLOROMETOXI, DIFLUORCLOROMETIL, NITRO; R3 is hydrogen, methyl, methoxy, ethoxy, fluorine, chlorine, thiomethyl; W is hydrogen or chlorine YZ EN CHON, and salts suitable for use in agriculture.