Extracts of Sambucus L. and Artemisia annua L. were tested against confused flour beetle Tribolium confusum Duv. The plants were shade dried, steem distillation extracted and their extracts being seprated by Diethylether. Ether was then separated from ether-oil solution by a rotatory evaporator. The resultant oil was then diluted and the concentrations used were; 1, 2.5, 5 and 10 percent. Each concentration was considered as a treatment with four replicates of 10 insects each. A control with acetone treatment was carried out for comparisons and the experiments being carried out for both sexes. Mortality rate was calculated and corrected based on Abbott’s formula. The
data were subjected to statistical analysis (SAS). The results indicated that all
concentrations of the two plant extracts were effective. The Artemisia annua extract with 32.38±1.49% exhibited a higher total mortality rate as compared to 30.23±1.49% for Sambucus ebulus. However, there were no significant differences between the extracts used (p>0.05). LC50 in Artemisia annua and Sambucus ebulus extracts were determined 3.24% and 3.86% of crude extract concentration, respectively. The mortality rate in males was higher than in female beetles. However, this difference was not statistically significant (p>0.05).
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