Insecticidal properties of some plant extracts against granary weevil, Sitophilus granaries L. and rust-red flour beetle, Tribolium castaneum H.

Document Type : Original Article

Authors

1 Environment Protection Department, Faculty of Environmental Agricultural Sciences, Suez Canal University

2 Plant Protection Department, Faculty of Agriculture, Suez Canal University

10.21608/jpces.2008.459595

Abstract

Laboratory experiments were conducted under controlled conditions to test the  insecticidal activity of aqueous and organic extracts of eight plants collected from north-Sinai (Tree tobacco, Nicotiana glauca G.;  Lavender cotton, Achillea fragrantissima F.; Thymelea Thymelaea hirsute L.; Rimth, Hammad elegans L., Yarnow, Achillea santolina L., Chinaberry, Melia azedarach L., Olive, Olea europaea L. and Lemon, Citrus limon L.) against the adult stages of Granary weevil, Sitophilus granaries L. and the Rust – red flour beetle, Tribolium castaneum H. The results showed that the aqueous extract of T. hirsute gave the highest toxicity among the other tested plants against the Granary weevil, S. granaries with LD50 equal to 0.250x10-3 ppm. However, the organic extract of N. glauca showed the best results with LD50 equal to 0.833x10-3 ppm on S. granaries. On the other hand, both the aqueous and organic extracts of A. santolina gave the highest toxicity against T. castaneum with LD50's of 0.105 x 105 and 0.085 x 105 ppm, respectively.
Journal of Pest Control and Environmental Sciences
Volume 16, Issue 1
2008
Pages 57-68

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