PURPOSE: To obtain a plant disease injury controlling agent being an ingredient derived from a natural product which has been utilized as drink or food over a long year and having high safety and having preventing and exterminating effect on plant disease injuries.
CONSTITUTION: The objective plant disease injury controlling agent containing (A) extracts from a natural product or main ingredients thereof, preferably cinnamic aldehyde, eugenol, hinokitiol, cineole, menthol, carbon, cuminal, anethole or essential oil extracted from a natural product of cinnamon, Quassia spp., clove, hinoki cypress, Eucalyptus spp., Mentha spp., Mentha vilidis L.M., cumin, Limonium, caraway, etc., containing these ingredients and/or (B) a tea- derived ingredient such as extract from tea or tea catechins or tea saponins, preferably a mixture of these components A and B as active ingredients and applied to plants or soil in order to prevent or exterminate plant disease injuries by filamentous fungi or bacteria in culture of a plant in fields of agriculture or landscaping containing horticulture or gulf field.
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MASUDA NOBUYOSHI
TAURA YOSHIAKI
NAMEKI TAKASHI
KAWASAKI TOSHIO
