Mitsubishi Gas Chemical Company, Inc.

Toshio Kajita

Masakazu Furushima

Akinori Tanaka

Akinori Suzuki

Takashi Suzuki

Shigeo Yoshinaka

Mitsunori Oda

Taketo Maruyama

Suong B Hyeon

Takashi Oritani

Suong Be Hyeon

Disclosed are novel adenine derivatives represented by the formula I and agriculturally acceptable acid addition salts thereof represented by the formula: ##STR1## wherein n is an integer of 2-4. Compositions for increasing yield of crops such as leguminous crops and gramineous crops which contain the above adenine derivatives or salts thereof as an active ingredient and methods for increasing yield of crops using these compositions are also disclosed.

Adenine derivatives and their use as agents for increasing yield of crops

Use of agriculturally acceptable salts of compounds of the following formula for promoting the growth of plants. ##STR1## wherein Hal represents a chlorine, bromine or iodine atom, X.sub.1 represents a hydrogen or chlorine atom, or a methyl, trifluoromethyl, nitro, methoxy or t-butyl group, and X.sub.2 represents a hydrogen atom, or both X.sub.1 and X.sub.2 represent a chlorine atom or a methyl group; and Y represents a hydrogen atom, or a C.sub.2-6 alkylcarbonyl, benzoyl, N-phenylcarbamoyl, N-3,4-dichlorophenylcarbamoyl, chloropropylcarbonyl, methoxycarbonyl, carbamoyl or methacryloyl group.

Plant growth promotion

A method of increasing the harvest of a crop which comprises applying an effective amount of taurine to the crop or its seeds, and a composition therefor.

Method and composition for increasing harvests of crops

A plant growth regulating composition comprising as an active ingredient a combination of

Plant growth regulating composition

Growing community of inventors

Yachiyo, Japan

Toshio Kajita