The Contact Toxicity of Some Plant Extracts on Tribolium confusum Duv. (Coleoptera: Tenebrionidae) and Rhyzopertha dominica F. (Coleoptera: Bostrichidae)

Abstract

In this study, the toxic effects of methanol extracts obtained from, Reseda lutea L. (Resedaceae), Salvia absconditiflora Greuter & Burdet. (Lamiaceae), Thymus leucostomus Hausskn. & Velen. (Lamiaceae), Chorispora purpurascens (Banks & Sol.) Eig (Brassicaceae), Isatis floribunda Boiss. ex Bornm. (Brassicaceae) and Linum tenuifolium L. (Linaceae) plants were tested on Tribolium confusum Duv. (Col.: Tenebrionidae) and Rhyzopertha dominica F. (Col.: Bostrichidae) in laboratory conditions. The methanol extracts obtained from the plants were applied to the adults of the pests by micro-aplicator. As a result of the single dose (10% (w/v)) effect study, the highest contact toxicity against T. confusum (23.17%) and R. dominica (18.35%) showed the extract obtained from C. purpurascens plant.