Nihon Nohyaku Co., Ltd.

Minoru Higashimura

Masakazu Shibayama

Takashi Ootsuka

Atsuhiko Yuda

A herbicidal composition having a reduced phytotoxicity which comprises at least one compound selected from 3-substituted phenylpyrazole derivatives such as ET-751 represented by the general formula (I): ##STR1## (wherein R is a substituent such as an alkoxy group, each of R.sup.1 and R.sup.2 is a substituent such as a lower alkyl group, Y is an oxygen atom or the like, and each of X.sup.1 and X.sup.2 is a halogen atom) and at least one specific anionic surfactant.

Herbicidal composition having a reduced phytotoxicity

A pesticidal aqueous suspension concentrate containing as an active ingredient a 3-substituted pyrazole derivative represented by the general formula (I): ##STR1## (wherein the substituents areas defined in the description of the specification)in which the 50% particle size and 90% particle size in cumulative particle size distribution of particles of the active ingredient are less than 1 .mu.m and less than 2 .mu.m, respectively, and which is harmless to useful crops and is equal to an emulsifiable concentrate in herbicidal effect; and a process for producing said pesticidal aqueous suspension concentrate.

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Ibaraki, Japan

Minoru Higashimura