author(s)
Abdel-Raheem MA, IA Ismail, RS Abdel Rahman, NA Farag, IE Abdel Rhman

abstract
The present work was evaluation of the efficacy of the entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae on Rhyzopertha dominica, Sitophilus oryzae and Oryzaephilus surinamensis. Each insect species lass="GINGER_SOFTWARE_mark">formulated fungi B. bassiana and M. anisopliae at the concentrations of 0.12 x 10 ⁶conidia /g, 0.22 x 10 ⁶ conidia /g, 0.32 x 10 ⁶ conidia / g, and 0.42 x 10 ⁶ conidia /g. M. anisopliae was more effective against tested insects than B. bassiana. Four concentrations of B. bassiana were tested against R. dominica, S. oryzae and O. surinamensis. LC₅₀ were 1.2 x 10 ⁵ conidia / g, 1.6 x 10 ⁵ conidia / g and 1.4 x 10 ⁵conidia / g, respectively. The same concentrations M. anisopliae were tested against R. dominica, S. oryzae and O. surinamensis. LC₅₀ were 2.7 x 10 ⁵ conidia / g, 1.3 x 10 ⁵ conidia / g, and 3.5 x 10 ⁵ conidia / g, respectively.