Herbicidal sulfonamides

摘要

Certain substituted pyrimidine sulfonylureas, such as 3-[[[(4-(dimethoxymethyl)-6-methylpyrimidin-2-yl]aminocarbonyl]aminosu lfonyl]-2-thiophenecarboxylic acid, methyl ester, are selective pre-emergence and/or post-emergence herbicides.