| 摘要 |
An object of the present invention is to provide a composition for protecting a plant from a disease that is safe, at low cost, environment friendly, and improves the natural resistance of plant itself by inducing production of a phytoalexin, an antibacterial substance inherent to plant, and a using method thereof. For the above purpose the present invention employs said composition for protecting a plant from a disease comprised of at least one sulfur-containing amino acid selected from the group comprising methionine, cysteine, and cystine, and D-glucose in a mixed form. In a preferred embodiment of the present invention, it is sprayed on the aboveground part of a plant either undiluted or after dilution with water by 100,000 times, directly mixed with soil, or irrigated on a plant after dilution with water by 1-1,000,000 times.
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