The present invention relates to an eco-friendly antiseptic composition for controlling cucumber powdery mildew and cucumber mildew disease, and a method for preparing the same. More particularly, the present invention relates to a composition for preventing and / or treating eosinophilia or eucalyptus oil from rosin of Pinus deniflora, (eugenol), and a method for producing the same. The composition of the present invention using a natural product and the method of manufacturing the same according to the present invention are prepared by further mixing eucalyptus oil or eugenol in a controlling agent using rosin having antiseptic and antimicrobial activity so as to provide a more effective controlling effect And the composition of the present invention using a natural product can be manufactured without chemical substances and can solve problems such as direct toxicity and residual toxicity caused by the use of a bactericide containing a conventional chemical substance Can be provided.
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