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Insecticidal effect of kaolin powder flavoured with essential oils of Lantana camara L. (Verbenaceae) and Annona senegalensis Pers. (Annonaceae) on Caryedon serratus Olivier (Coleoptera-Bruchidae), a groundnut stock pest

Int. J. Biol. Chem. Sci. 6(4) : 1792-1797, August 2012.
Sabelle GUEYE 1,4 , Cheikh THIAW 2,4* and Mbacké SEMBENE 3,4

Abstract : The groundnut weevil, Caryedon serratus, causes significant losses of groundnut stocks in Senegal by
developing larvae in the seeds. Essential oils extracted from leaves of two plants that grow naturally in
Senegal, i.e. the sugar apple (Annona senegalensis Pers.) and lantana (Lantana camara), were tested on adults
of Caryedon serratus. Purified and pulverized kaolin was flavoured with essential oils of A. Senegalensis Pers.
and L. camara (Lam) obtained through vapour distillation. Adults C. serratus aged 24 hrs at most were treated
with 0.1 g of powder flavoured with increasing doses (12.5 to 50 μl/g. of powder) of essential oil. With
increasing doses (12.5 to 50 μl/g of powder) of essential oil. The powder Aromatized with essential oil of A.
senegalensis at concentration 25 μl/g. induced 50% mortality after 36 hrs of contact at concentration 25 μl/g
and 100% after 48 hrs at 50 μl/g. The powder mixed with the essential oil of L. camara induced after 12 hours
of contact 22% mortality at the dose of 12.5 μl/g, the mortality increased with dose duration of exposure and
reached 97.22% after 36 hrs with 50μl/g.
© 2012 International Formulae Group. All rights reserved.

Keywords : Toxicity, Caryedon serratus, Annona senegalensis, Lantana camara, essential oils, kaolin.