Acaricidal and oviposition deterring effects of santalol identified in sandalwood oil against two-spotted spider mite, Tetranychus urticae Koch Acari: TetranychidaeReport as inadecuate




Acaricidal and oviposition deterring effects of santalol identified in sandalwood oil against two-spotted spider mite, Tetranychus urticae Koch Acari: Tetranychidae - Download this document for free, or read online. Document in PDF available to download.

Journal of Pest Science

, Volume 84, Issue 4, pp 495–501

First Online: 26 July 2011Received: 31 March 2011Accepted: 12 July 2011

Abstract

Thirty-four plant essential oils were screened for their acaricidal and oviposition deterrent activities against two-spotted spider mite TSSM, Tetranychus urticae Koch Acari: Tetranychidae, in the laboratory using a leaf-dip bioassay. From initial trials, sandalwood and common thyme oils were observed to be the most effective against TSSM adult females. Subsequent trials confirmed that only sandalwood oil was significantly active 87.2 ± 2.9% mortality against TSSM adult females. Sandalwood oil also demonstrated oviposition deterring effects based on a 89.3% reduction of the total number of eggs on leaf disks treated with the oil. GC–MS analysis revealed that the main components of the sandalwood oil were α-santalol 45.8%, β-santalol 20.6%, β-sinensal 9.4%, and epi-β-santalol 3.3%. A mixture of α- and β-santalol 51.0:22.9, respectively produced significantly higher mortality 85.5 ± 2.9% and oviposition deterrent effects 94.7% reduction in the number of eggs than the control. Phytotoxicity was not shown on rose shoots to which a 0.1% solution of sandalwood oil was applied.

KeywordsTetranychus urticae Essential oil Natural acaricide Sandalwood Santalol Common thyme Communicated by J. Gross.

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Author: Hyun Sik Roh - Eu Gene Lim - Jinwoo Kim - Chung Gyoo Park

Source: https://link.springer.com/







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