Study of essential oils of four medicinal plants on some greenhouse pests

Motazedian, N. (2009) Study of essential oils of four medicinal plants on some greenhouse pests. Masters thesis, University of Zabol.

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Potential problem associated with using toxic insecticide for long time include pest resistance and negative impact on natural enemies, environment and human health. The discovery of active compounds that are more selective and less persistent will be more beneficial for the environment and agricultural product consumers. Certain secondary metabolites of plants origin by new insecticide and botanical derivatives such as extracts and essential oils may be more environmentally benign than synthetic chemicals. Essential oils demonstrate a wild range of bioactivities to insects from direct toxicity to oviposit ion and feeding deterrence as well as repellence and attraction. In this paper, we have estimate the toxicity of three species of essential oils of medicinal plant, Mentha Longifolia(Lamiaceae), Salvia officials (Lamiaceae) and Myrthus communes (Myrtaceae) on three greenhouse pest, which has high damage: Brevicoryne brassica L. (Hemiptera: Aphididae), Thrips tabaci (Thysanoptera: Thripidae) and Tetranychus urtica koch (Acari: Tetranychidae). Doses of essential oil in this experiment was 0, 0.5, 2, 3.5, 5, 6.5 and 8 µl. LC50, LT50 and ED50 for all three essential oils. Mentha Longifolia has more toxic effect on this pest and may be used as safe and proper insecticide for them. LC50 Mentha Longifolia for Brevicoryne brassica was 24.910 µl/L air, for Thrips tabaci was 37.377 µl/L air and for Tetranychus Utica Koch was 20.082 µl/L air.

Item Type: Thesis (Masters)
Uncontrolled Keywords: essential oils, medicinal plant, greenhouse pest
Subjects: S Agriculture > SB Plant culture
Depositing User: admin admin1 admin2
Date Deposited: 28 May 2016 05:46
Last Modified: 28 May 2016 05:46

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