Repellent activity of different plant extracts on Tribolium castaneum (Herbst)
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Abstract
The objective of this paper was to determine the repellent activity of different plant extracts with bioassays on Tribolium castaneum, a pest of stored grains. In a food preference chamber, crude extracts in ethanol, hexane, and chloroform of Chenopodium ambrosioides, Larrea divaricata, Artemisia verlotorum, Ximena americana, and Schkuhria pinnata were evaluated for their repellent effect. All extracts reduced the total number and the percentage of insects in treated food but to different degrees. Thus, the extract of S. pinnata in chloroform had the highest repellent activity, followed by the extracts of A. verlotorum in chloroform, L. divaricata in ethanol, C. ambrosioides in chloroform, and X. americana in ethanol.
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