Six strains of Beauveria bassiana were isolated from different sources collected from different places of Tamil Nadu and tested their efficacy under laboratory condition against crawler stages of papaya mealybug by insect dip bioassay method. The results revealed that B. bassiana strains, UPI (Bb) and ANR (Bb) were recorded the lowest LC50 values of x106 , spores ml-1 respectively which were indicated more virulence compared to other strains. | Insect bioassay of Beauveria bassiana against crawler stage of papaya mealybug Paracoccus marginatus under laboratory condition
