study the effect of some biological and chemical Treatments in control on the larvae stages of Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae)

Abstract

This study aims to possibility of create means to protect the grains stores from infestation with Tribolium castaneum through test for the efficiency of some biological treatments (fungus Beauveria bassiana and bacterium Bacillus thuringiensis ) and chemical treatments (Dichlorvos and Diazinon). The study results showed the fungus B. bassiana was more effective than the bacterium B. thuringiensis from where mortality rate Its caused 33.90 % compare with 27.41 % in the bacterium B. thuringiensis after 72 hours of the treatment. As well as the study revealed the Dichlorvos is superiority on Diazinon. which caused mortality rate reached to 38.14 % , compare with 31.79 % in chemicides Diazinon after 72 hours of the treatment .