Evaluation of Some Plant Extracts against Adults of the Saw-toothed Grain Beetle, Oryzaephilus surinamensis (Linn.) (Coleoptera: Silvanidae)

摘要

Laboratory studies were carried out to determine the effects of three plant extracts on adults of the saw-toothed grain beetle Oryzaephilus surinamensis. The three plants were Usher (Calotropis procera), Argel (Solenostemma argel) and Datura (Datura stramonium). Results revealed that at the three doses applied (5%, 10% and 15%) extracts of the three plants tested showed some potential insecticidal effects on the adults of O. surinamensis, with the C. procera (Ethanol) the most effective one. In addition, all extracts showed high repellency action against the pest.