Ishihara Sangyo Kaisha, Ltd.

Chimoto Honda

Nobuyuki Sakashita

Fumio Kimura

Takahiro Haga

Shigeo Murai

Yasuo Ogawa

Kouji Hayashi

Toshio Seki

Kouji Minamida

Akira Kimura

Takeshi Hiratsuka

A herbicidal suspension concentrate characterized by comprising from 0.5 to 20 parts by weight of at least one compound selected from among sulfonamide compounds represented by the general formula (I). ##STR1## (wherein X is a hydrogen atom, a chloride atom, a bromine atom, a methyl group, or a difluoromethyl group) and their salts as an active ingredient, from 55 to 94.5 parts by weight of a vegetable oil, and from 5 to 25 parts by weight of a surfactant.

Herbicidal suspension concentrate

Mixtures of herbicidal pyridine sulfonamide compounds of formula: ##STR1## wherein X is a hydrogen atom, a halogen atom, or a methyl group which may be substituted by 1 to 3 halogen atoms, and R is a hydrogen atom or a methyl group, and their salts, with at least one herbicidal compound selected from the group consisting of 2,4-D, Dicamba, Atrazine, Bentazone, Alcachlor, Metolachlor, Propachlor, Pendimethalin, Tridiphane, Cyanazine, Bromoxynil, Acetochlor, etc.

Herbicidal composition

N-[(4,6-Dimethoxypyrimidin-2-yl)aminocarbonyl]-3-trifluoromethylpyridine-2- sulfonamide or a salt thereof is disclosed. The compound of the invention is useful as a herbicide which has an extremely high herbicidal effect against a wide variety of weeds including strongly noxious weeds but which shows a high safety against tomato and turfs. A process for the production of N-[(4,6-dimethoxypyrimidin-2-yl)aminocarbonyl]-3-trifluoromethylpyridine-2 -sulfonamide is also disclosed.

N-[(4,6-dimetho

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Osaka, Japan

Chimoto Honda