Agro-kanesho Co., Ltd.

Denki Kagaku Kogyo Kabushiki Kaisha

Nobuo Onodera

Seigo Koura

Shinzo Someya

Akinori Kariya

Katsumi Nanjo

Hiroshi Tabata

Shinobu Iriuchijima

Shunnosuke Watanabe

Shigenori Segami

Kiyoshi Kanase

A herbicide exhibiting high herbicidal activity against a variety of weeds and being highly safe for useful crops can be obtained through the use of a heterocyclic compound represented by the following general formula (I): ##STR1## wherein R represents a group represented by the following formula: ##STR2## X represents an oxygen atom or a sulfur atom; R.sup.1 represents a halogen atom or a lower alkyl group; R.sup.2 represents a hydrogen atom or a methyl group; R.sup.3 represents a halogen atom, a lower alkyl group, a lower haloalkyl group, a lower alkoxy group, a lower alkylthio group, a cyano group or --COOR.sup.4 (R.sup.4 is a lower alkyl group, a lower alkoxyalkyl group or a tetrahydrofurfuryl group); m is 0, 1 or 2 and n is 0, 1, 2 or 3.

Heterocyclic compounds and herbicidal compositions containing the

An insecticide having high insecticidal activities against various harmful insects, which is low in toxicity to warm-blooded animals and fishes to be used safely. The insecticide comprises a derivative of 2,3-dihydro-2,2-dimethylbenzofuran-7-yl N-(substituted sulfonylcarbamoyl)-N-methylcarbamate represented by the general formula: ##STR1## wherein X stands for a halogen atom; --NHR where R is an alkyl group, cycloalkyl group, lower alkenyl group, lower alkynyl group or ##STR2## (where Z is a hydrogen atom, halogen atom, alkyl group, alkoxy group or alkoxycarbonyl group), aralkyl group, a 5-member or 6-member heterocyclic group, or an alkoxy group.

Derivative of N-methylcarbamate and insecticide containing the same

1,2-benzoisothiazol-3(2H)-one, 1,1-dioxide, ion(1-),2-hydroxy-N,N,N-trimethyl-ethanaminium represented by the following formula (I): ##STR1## is found to have great utility as an effective component in plant protection agents for control of fungi and bacteria. By the use of the compound, diseases or blights of plants can be effectively prevented.

1,2-benzoisothiazol-3(2H)-one 1,1-dioxide,

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Tokorozawa, Japan

Nobuo Onodera