Febri Odel Nitbani, Luther Kadang, and Christiani D. Q. M Bulin
Department of Chemistry, Faculty of Sciences and Engineering, Nusa Cendana University, Kupang
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The present study was conducted to elucidate the activity of essential oil from rhizome extracts of Acorus calamus L. as an herbal insecticide against Plutella xylostella L. pests. The oil from the Acorus Calamus L. root was extracted by a water steam distillation method and found 0.005% content. Antifeedant testing was performed by trial option, while insecticidal activity was carried out by feeding and contacting methods. The results showed that the oils have activity as an herbal insecticidal and as an appetite inhibitor to the Plutella xylostella L. pests. The maximum resistance index values obtained from eating essential oils at concentrations of 4.0% was equal to 80.82%. The toxicity values of the oils, reported as LC50, as insecticides by the feeding trial and contacting methods were 1.33% and 1.27%, respectively. Those results conclusively indicated that the essential oils of the Acorus Calamus L. potentially protect the cabbage leaves from the Plutella xylostella L. pest attacking.