Nippon Kayaku Kabushiki Kaisha

Tama Biochemical Co., Ltd.

Atsuhiko Shida

Nobuo Ikekawa

Fumio Futatsuya

Mikio Yanagi

Osamu Yamada

Tetsuo Takematsu

Shizuo Shimano

Tadashi Hohjoh

Shinichi Kobayashi

Sei-ichi Hayashi

Disclosed herein is a novel steroids represented by the formula (1): ##STR1## wherein Z represents ##STR2## n is integer of 1 to 3, R represents hydrogen, halogen, CF.sub.3, lower alkyl, lower alkoxy or --CO.sub.2 R', wherein R' represents hydrogen, alkali metal or lower alkyl, and

23-Phenylsteroids

The yield of a cereal is increased by application of an agent selected from brassinolide derivatives of the formulae: ##STR1## wherein R is hydrogen or acetyl.

Increasing the yield of cereals by means of brassinolide derivatives

A compound of the formula: ##STR1## wherein Z is ##STR2## wherein R.sub.4 is lower alkyl, X and Y are oxygen or sulfur and n is an integer of 3 to 6, R.sub.1 is hydrogen or halogen, R.sub.2 is halogen and R.sub.3 is hydrogen or C.sub.1 -C.sub.8 -alkyl which may have lower alkoxy; a herbicidal composition containing said compound as an effective component; a method for killing weeds using said compound; and processes for the production of said compound, are disclosed hereinafter.

1H[1,2,4]-Triazolo[1,2-a]pyridazine-1,3-diones useful as herbicides

A new N-substituted tetrahydroisophthalimde derivative represented by the formula: ##STR1## Wherein R.sub.1 and R.sub.2 are hydrogen or halogen, R.sub.3 is hydrogen or lower alkyl and R.sub.4 is alkyl which may be substituted by halogen or lower alkoxy, and preparation methods thereof and herbicidal composition comprising one or more of said derivatives as active ingredients, is disclosed.

N-Substituted-tetrahydroisophthalimide derivatives

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Koga, Japan

Atsuhiko Shida