Evaluation of the Efficacy of Commercial Plant Extracts of Palazin and Tondxier Against the Red Flour Beetle Tribolium castaneum (Herbest) Under Laboratory Conditions

Al-Fatlawi, N.C.H. and S. Al-Zurfi. 2023. Evaluation of the Efficacy of Commercial Plant Extracts of Palazin and Tondxier Against the Red Flour Beetle Tribolium castaneum (Herbest) Under Laboratory Conditions. Arab Journal of Plant Protection, 41(1): 54-57. https://doi.org/10.22268/AJPP-41.1.054057 The Effect of Tondxier and Palazin plant extracts on the mortality of the flour beetle T. castaneum (Herb) was investigated. Plant extracts were separately tested under laboratory conditions against the beetles using a topical spray. Beetles were sprayed with plant suspensions at different concentrations (1, 2 and 3 ml/L) for both Tondxier and Palazin. Mortality was recorded daily for 15 days while beetles were kept on wheat flour. Both Tondxier and Palazin had an impact on T. castaneum. Commercial Tondxier was more effective than Palazin at the same concentrations tested. Nevertheless, significant differences in the mortality rate at the end of the experiments between second, and 5 th instar larvae and adults treated with Palazin and Tondxier extracts were observed. Second and 5 th instar larvae were more susceptible, and adults were more resistant to Palazin and Tondxier treatments. This study showed that mortality rate increases with increased concentration and length of exposure times. Results obtained suggested that the two plant extracts of Palazin and Tondxier used in this study can be used as potent insect control agents. Keywords: Palazin, Tondxier, Tribolium castaneum, larvae