Figure 2

Frass production (g) in last instar larvae of Rhynchophorus ferrugineus when treated with B. bassiana (1 × 10⁴ spore ml⁻¹) and H. bacteriophora (50 IJs ml⁻¹); (Bb: Beauveria bassiana, Hb: Heterorhabditis bacteriophora, IJs: Infective Juveniles).