Sds Biotech K.k.

Idemitsu Kosan Company, Limited

Sds Biotek K.k.

Yusuke Amaki

Keijitsu Tanaka

Motoki Tanaka

Mutsumi Miyazaki

Akitomo Takahashi

Yasuyuki Morishita

Takanori Eguchi

Koji Inai

The present invention relates to a plant disease control agent containing a compound represented by the following formula (1) or salt thereof as an active ingredient (in the formula, Rand Rrepresents a hydrogen atom or methyl group but excepting cases where Rand Rare the same), a plant disease controlling method applying the plant disease control agent on plants suffering from diseases, and a novel compound represented by formula (1) or salt thereof. 

Plant disease control agent

A microorganism selected from the group consisting of asp. ITB090 strain (NITE BP-01725), asp. ITB100 strain (NITE BP-01726), and asp. ITB105 strain (NITE BP-01727), or a variant strain derived therefrom is used to control plant diseases, control nematodes, promote plant growth, and the like.

Method of promoting plant growth

An agricultural and horticultural fungicide composition including prumycin and a surfactin family member as active components and a plant disease controlling method. As the surfactin, family member, surfactin and [Ile]surfactin are preferred. The composition preferably further contains calcium chloride comprises for improving storage stability.

Agricultural and horticultural fungicide composition and plant disease controlling method

The present invention relates to thesp. strains AT-332 (NITE BP-1095) and AT-79 (NITE BP-1094) isolated from nature; and a plant disease control agent, a nematode control agent and a plant growth promoter containing the strains as active bacteria. Thesp. strains AT-332 and AT-79 strain are effective in controlling both a wide range of various plant diseases and nematode-damage and capable of promoting the growth of useful plants, due to a culture containing a secondary metabolite of the strains or cultivated and isolated live bacteria of the strains being introduced to a plant body or to the culture soil.

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The present invention relates to a microbial pesticide composition, which is obtained by a method including the steps of: adjusting a pH of a culture solution of thesp. bacterium to from 3.0 to 5.0 (pH adjustment step); mixing the culture solution with the calcium chloride and/or the magnesium sulfate (mixing step); and lyophilizing or spray-drying the culture solution (drying step). In the microbial pesticide composition, even if it is stored for a long period of time at room temperature, the active ingredient remains stable and a sufficient preventive effect against plant disease can be maintained.

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Ibaraki, Japan

Yusuke Amaki