Efficacy of the entomopathogenic fungi; beauverai bassiana and metarhizium anisoplille on some insect pests under laboratory conditions [electronic resource].

Includes reference.

Pathogencity of two entomopathogenic fungi, Beauveria bassiana and Melarhizium anisapliae isolates was evaluated against the beet fly, Pegamyia mixla ViII., the sugar beet moth, Scrabipalpa acellatella Boyd. and the cowpea aphid, Aphis craccivara Koch. under laboratory conditions. Obtained results showed that the third instar larvae of P. mixta and S. ocellatella were affected by both isolates than the pupae after the tenth day post treatment. Mortality occurred in larvae from the third day of treatment, while it occurred in pupae after the fourth day. A. craccivara was slightly affected by both isolates at all concentrations. Maximum mortality percent (32.6%) took place with the third concentration (2 x 10' conidia !tol) of M. anisapliae isolate. M. anisapliae isolate was more effective against the three pests than B. bassiana isolates. These results suggested that both B. bassiana and M. anisapliae isolates were virulent against the larvae and pupae of P. mixta and S. ocellalella but less virulent to A. craccivara.

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