Pathogenicity and Efficacy of Different Metarhizium anisopliae and Beauveria bassiana and in Controlling Pantana phyllostachysae Chao Larvae

Pantana phyllostachysae Chao is an important kind of injurious pests of bamboo in Fujian Province. In order to screen entomopathogenic fungi strains with high virulence against P. phyllostachysae Larvae, the bioassay evaluation of one B. bassiana strain and five M. anisopliae strains against P. phyllostachysae Larvae was carried out through dipping in spore suspension. The results showed that the cumulative corrected mortality of P. phyllostachysae Larvae was over 63.16% with B. bassiana and M. anisopliae. The corrected mortality of P. phyllostachysae Larvae at 12 d after inoculated with MaFzzL-01 and Ma1291-2 was 90.93% and 84.21%, respectively. While LT50 values of two M. anisopliae strains, MaFzzL-01 and Ma1291-2, were at 5.97 d and 6.67 d, respectively. LC50 values of two strains, MaFzzL-01 and Ma1291-2, were 1.727×10 4 spore/mL and 2.209×10 4 spore/mL, respectively. The results of bioassay showed that MaFzzL-01 and Ma1291-2 strains had higher virulence to P. phyllostachysae Larvae than other strains did. When using 1.45×10 8 spore/mL of two M. anisopliae strains, Ma1291-2 and MaFzzL-01, to fight against larvae, good control efficiency in fields could be achieved.