Synergistic of Trichoderma virede and Beauveria bassiana to Biocontrol Tomata Against and Bemisia tabaci

Abstract

In Iraq, Bemisia tabaci is a major Tomato pest that causes significant crop losses, which lowers farmers' revenue. The purpose of this study was to detect entomopathogenic fungus from dead whiteflies and to assess their relative frequency and different structural characteristics. Only two fungal species, Trichodrema virede and Beauveria bassiana, with relative frequencies of 15.07 and 10.94%, respectively, were validated microscopically as recognised entomopathogenic species out of the 11 fungal species isolated from the whitefly cadavers. The 7th day following inoculation was when T. virede and B. bassiana had the largest mortality impact on B. tabaci nymphs and adults, with an average mortality of more than 60% (with a concentration of 106 conidia/ml). In comparison to nymphs, suspension T.virede and B.bassiana. were significantly twice as pathogenic.