Virulence of Nano – Particle preparation of Entomopathogenic fungi and Entomopathogenic Bacteria against red palm weevil Rhynchophorus ferrugineus (Olivier) (Coleoptera: Curculionidae)
Mohamed Abdel‐Raheem, Naglaa F. Reyad, HUDA ALGHAMDI
Abstract
Background: Rhynchophorus ferrugineus is one of the most severe pests on palm species, including date palms In Asia. Purpose: The purpose of the current study is to evaluate the virulence of bio efficacy of nano-particle of entomopathogenic fungi and entomopathogenic bacteria on red palm weevil, Rhynchophorus ferrugineus. Methods: Prepare concentrations of Fungal Spores and Silver Nano Particles were prepared from Metarhizium anisopliae, Beauveria bassiana, Verticillium lecanii and B. thuringiensis, B. subtilis. Results: M. anisopliae was the highest % mortality (90%), (95%) and (77%) against eggs, larvae and adults of R. ferrugineus, respectively when treated with bio synthesized or with fungal spores after seven days from treatment and the lowest % mortality was recorded when treated with V. lecanii.