Ishihara Sangyo Kaisha, Ltd.

Yoshiaki Ishihara

Ryu Yamada

Munekazu Ogawa

Tatsuhiko Tsuruta

Hiroshi Yoshii

Kazutaka Ikeda

Takeshi Shindo

To provide a solid herbicidal composition in which decomposition of the herbicidal active ingredient is suppressed, and favorable herbicidal activity is stably exhibited. A solid herbicidal composition comprising (1) 1-(4,6-dimethoxypyrimidin-2-yl)-3-(3-trifluoromethyl-2-pyridylsulfonyl)urea or its salt and (2) at least one surfactant selected from the group consisting of a naphthalene sulfonate condensed with formaldehyde, an alkylnaphthalene sulfonate condensed with formaldehyde, a dialkylnaphthalene sulfonate condensed with formaldehyde and a polycarboxylate.

Solid herbicidal composition

A herbicidal composition comprising a herbicidal sulfonylurea compound or its salt, and an alkoxylated glyceride. A method for controlling undesired plants or inhibiting their growth, which comprises applying a herbicidally effective amount of the herbicidal composition to the undesired plants or to a place where they grow. A method for enhancing the herbicidal effect of a herbicidal sulfonylurea compound or its salt by means of an alkoxylated glyceride.

Herbicidal composition having the herbicidal effect enhanced, and method for enhancing the herbicidal effect

A herbicidal suspension comprising (1) a sulfonylurea compound or its salt as a herbicidal component, (2) at least one surfactant selected from the group consisting of an alkoxylated sorbitol fatty acid ester and an alkoxylated sorbitan fatty acid ester, and (3) a water-immiscible diluent. A method for controlling undesired plants or inhibiting their growth, which comprises applying a herbicidally effective amount of the herbicidal suspension to the undesired plants or to a place where they grow.

Herbicidal suspension

Not so many reports on the practical use of herbicidal sulfonylurea compounds have been made since they easily decompose in water or a process for production of their suspensions is complicated. Therefore, it is desired to prepare a water-based herbicidal suspension in which a herbicidal sulfonylurea compound will not decompose in water and excellent suspensibility of which is maintained, without complicated process. A water-based herbicidal suspension comprising (1) a herbicidal sulfonylurea compound (excluding 1-[3-[(4,6-dimethoxypyrimidin-2-ylcarbamoyl)sulfamoyl]-2-pyridyl]-2-fluoropropyl methoxyacetate 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 aryl sulfonate, an alkylaryl sulfonate and their formaldehyde condensates and (4) water.

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Kusatsu, Japan

Yoshiaki Ishihara