Combined effect of entomopathogenic fungi and Heterorhabditis bacteriophora against red palm weevil

Abstract: This research study was carried out to investigate the insecticidal properties of Beauveria bassiana and Heterorhabditis bacteriophora for the control of 2nd instar larvae of red palm weevil, Rhynchophorus ferrugineus (Olivier). Both agents were either applied alone or in combination sequentially. Enhanced morality was recorded for the combined treatments when delayed application of H. bacteriophora was made 1 or 2 weeks after fungal treatment compared to sole application. The results suggest that R. ferrugineus can be successfully managed by applying B. bassiana and H. bacteriophora.