Rikagaku Kenkyusho

Ajinomoto Co., Ltd.

Hodogaya Chemical Co., Ltd.

Riken Vitamin Oil Co., Ltd.

Rikagaku Kenkyusho and Mitsubishi Petrochemical Company Limited

Yasuo Homma

Tomomasa Misato

Yutaka Arimoto

Yasuo Fujimoto

Toshiro Shida

Keng Tang Huang

Keido Ko

Tetsuo Sekiya

Takeshi Toyoda

Kazuhiko Konno

Yosio Hayasi

Seizo Kanao

Kozo Sato

Mitsuhara Yuda

Tadashi Suyama

Tohoru Hidaka

A plant disease preventing agent which comprises as an effective ingredient at least one compound represented by the following formula (I) and a carrier: ##STR1## wherein R is selected from group consisting of 4-hydroxy-3-oxopent-1Z-enyl, 4 hydroxy-3-oxopent-1E-enyl, 3,4-dihydroxypent-1E-enyl and 1,4-dihydroxy-3-oxopentyl groups. The agent is effective to prevent melanose spot disease of oranges, stem-end rot disease, grey mold of petunia petals and rice blight.

Plant disease preventing agents

A coated agricultural chemical comprises a powdery effective component of an agricultural chemical coated with at least one member selected from the group consisting of esters of aliphatic acids and aliphatic polyols and phospholipids in an amount of 0.1 to 3 parts by weight per 100 parts by weight of the effective component. The agricultural chemicals exhibit high efficiency even at a concentration lower than that conventionally used and low phytotoxicity to plants.

Coated agricultural chemicals

It was found that sodium bicarbonate has a fungicidal activity and at the same time that the compound has a defect as a fungicide in that it is inferior in adhesiveness and spreadability and for this reason cannot be used alone as a fungicide. It is further found that an agricultural and horticultural fungicide having lasting fungicidal activity against plant diseases in a control value of over 90% can be obtained by using sodium bicarbonate in combination with a surfactant, particularly a food emulsifier, and further that the combination shows extensive effect in preventing fruit storage diseases. As all components of the combination are substances approved as food additives throughout the world, the fungicide does not cause pollution or present any hazard to human health.

Agricultural and horticultural fungicide and fruit storage disease

The present invention provides a novel horticultural and agricultural fungicidal composition which contains as an effective component a 2H-chromene-2-spiro-3'-phthalide derivative and a method for killing fungus on plants.

2H-Chromene-2-spiro-3'-phthalides useful as horticultural and

N-Higher aliphatic amino acids, lowe-alkyl esters thereof and their salts are useful for controlling numerous plant diseases. They exhibit excellent protective effect rather than curative effect and have no phytotoxicity, extremely low mammalian toxicity and cause no risk of pollution toward soils.

Fungicidal methods employing amino acid derivatives

Growing community of inventors

Sakado, Japan

Yasuo Homma