Effects of three plant extracts, ginger Zingiber officinale "Roscoe", garlic Allium sativum L. and red pepper Capsicum Annuum L. against the adult of red flour beetle Tribolium-castaneum "Herbst" "Coleoptera, Tenebrionidae"

الملخص EN

Laboratory Judies were conducted in the lab research of faculty of agriculture, University of Al zaeim Al azhari, Sudan, Khartoun North to evaluate the efficacy of water and powder extracts of three plants Zingiberofficinale, Allium sativum and capci-cumannuumagainst the adult stage of red flour beetle Tribolium-castaneum and estimating the percentage of the insecticidal and antifeedant effect for the following concentrations 5% and 10% for water extracts and 0.5g, 1g and 2.5g for powder extracts.

The experiment was carried out in a completely randomized design (CRD) andeach treatment was replicated fourtimes within24, 48 and 72exposure hours.The results showed no significant insecticidal effects of 5% plants water extract in all treatments after 24 and 48 hours but more efficacious significant differences between treatments and Ginger which cause 26% mortality after 72 hrs.

Also result showed moderate effect of Ginger andGarlic at 10 % concentration for mortality with value 45% and 39% respectively.

The results indicate that Ginger andGarlic powders at the same concentration (1g) the most toxic plant and Red pepperthe least toxic one,which caused adult mortality of 5%, 6% and1.33% respectively after 72 hrs.

Significant differentwas observed between all treatments and control in 0.5g concentration after 72hrs of exposure.

Also result showed excellence effect of Ginger powder at concentration 2.5g asantifeedant effect with the flour weight loss value of4% while the value for Garlic and Redpepper fruit powders at the same concentration were 5% and 8.33% respectively.