• Korean journal of applied entomology
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• v.56 no.4
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• pp.395-402
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• 2017

Overuse of synthetic pesticides caused negative side-effects such as environmental contamination, development of insect pests' resistance, and effects on non-target organisms. Plant origin substances without/or with low mammalian toxicity have been considered as promising alternatives to the synthetic pesticides. Fumigant toxicity of the essential oil of Iranian Yarrow, Achillea millefolium L., was investigated against a cosmopolitan stored-product insect pest: saw-toothed grain beetle (Oryzaephilus surinamensis L.). Chemical profile of this essential oil was studied by Gas Chromatography-Mass Spectrometry. Tested concentrations were significantly effective to the mortality of insect pest. A positive correlation between essential oil concentrations and pest mortality were realized. LC50 value (lethal concentration needed to 50% mortality) was achieved as $17.977(16.195{\pm}20.433){\mu}l/l$ air. The main components were 1,8-Cineole (13.17%), nerolidol (12.87%), ${\alpha}$-cubebene (12.35%), artemisia ketone (6.69%), ${\alpha}$-terpineol (5.27%), alloaromadendrene oxide (4.71%) and borneol (3.99%). Terpenic compounds including monoterpene hydrocarbons (8.19%), monoterpenoids (44.23%), sesquiterpene hydrocarbons (21.69%) and sesquiterpenoids (22.24%) were 96.35% of the total identified compounds. Results indicated that the terpene-rich A. millefolium essential oil may be considered as a safe bio-agent in the O. surinamensis management.

• Korean Journal of Medicinal Crop Science
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• v.15 no.6
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• pp.417-428
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• 2007

Most oriental medicinal plants in domestic markets have been imported, but these medicines are being easily exposed to many insect pests because of the poorness of storage facilities. This study was carried out to identify stored products insect pests occurring in 158 storage medicinal plants belonging to 134 genera of 67 families. No insect pests were not observed in 44 medicinal plants including Artemisia argyi Levl. et Vant., Cassia sieboldii Presl., and Juniperus chinensis L. Most commonly observed stored products insect pests in the surveyed medicinal plants were the order of as follows; Ahasverus advena(Waltl) 12.3%, Lasioderma serricorne F. 11.5%, Oryzaephilus surinamensis L. 10.3%, Tribolium castaneum (Herbst) 9.4%, Stegobium paniceum L. 8.4%, and Plodia interpunctella(Hbner) 7.9%. And these insects also are likely to prefer more root or rhizome part than the other ones. Based on these basic survey results, natural products researchers can obtain an important information in finding an insecticidal or fumigant compounds contained in the medicinal plants which any insect pests do not attack.