1. Efficacy of three plant essential oils, Azadirachta indica (Adr. Juss.), Eucalyptus camaldulensis (Dehn.) and Laurus nobilis (L.) on mortality cotton aphids, Aphis gossypii Glover (Hem: Aphididae).
- Author
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Ebrahimi, Mohammad, Safaralizade, Mohammad Hasan, Valizadegan, Oroj, and Amin, Bentol Hoda Hosaini
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ESSENTIAL oils , *NEEM , *EUCALYPTUS camaldulensis , *LAURUS nobilis , *COTTON aphid , *PEST control , *PLANT extracts - Abstract
The cotton aphid,Aphis gossypiiGlover (Hem: Aphididae), is one of the most injurious pests of fruits, vegetables and ornamental plants worldwide, both outdoor and indoor. Currently, the main method of control of this pest is through application of pesticides which is mostly accompanied by the resistance of the pest against pesticide(s). The resurgence of resistant aphid populations brings about further contamination of foodstuff and environment. Essential oils obtained from the aerial parts of plants may have the potential to be an alternative to synthetic pesticides, since they have been demonstrated to possess a wide range of bioactivities against insects and mites. So, the aim of the current study was to investigate the effect of essential oils extracted from three different plants namely:Azadirachta indicaAdr. Juss. (Meliaceae),Eucalyptus camaldulensisDehn. (Myrtaceae) andLaurus nobilisL. (Lauraceae) againstA. gossypii. The LC50values of essential oils ofA. indica,E. camaldulensisandL. nobilisagainstA. gossypiiwere 1.96, 2.28 and 3.16 μl L−1air, respectively. This shows thatA. indicapossesses the highest lethal activity whereasL. nobilisthe lowest. These data suggest that essential oils of all the three plants have the potential to be employed in the pest management programmes designed for a control ofA. gossypiiunder greenhouse conditions. [ABSTRACT FROM PUBLISHER]
- Published
- 2013
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