Not so many reports on the practical use of herbicidal sulfonylurea compoundshave been made since they easily decompose in water or a process forproduction of their suspensions is complicated. Therefore, it is desired toprepare a water-based herbicidal suspension in which a herbicidal sulfonylureacompound will not decompose in water and excellent suspensibility of which ismaintained, without complicated process. A water-based herbicidal suspensioncomprising (1) a herbicidal sulfonylurea compound (excluding 1-[3-[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-2-pyridyl]-2-fluoropropylmethoxyacetate and N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-2-(2-fluoro-1-hydroxypropyl)-3-pyridinesulfonamide) or its salt, (2) an inorganic salt,(3) at least one sulfonate selected from the group consisting of an arylsulfonate, an alkylaryl sulfonate and their formaldehyde condensates and (4)water.
