Isolation of entomopathogenic fungi and efficacy as a biological control agent on red spider mite Tetranychus urticae (Acari : Tetranychidae)‎

الملخص EN

Entomopathogenic fungi and non entomopathogens were isolated from Egyptian soil using two isolation methods, from soil by Galleria bait method and insect.

The sample were identified using the conventional methods.

The virulence of four entomopathogenic fungi isolates were tested on red spider mites Tetranychus urticae (Koch) (Acari: Tetranychidae), Beauveria bassiana (B1 and B2) and Metarhizium anisopliae (M1 and M2).

Results proved that (B2) was more effective against adult compared with all other isolates.

When studying the toxicity of fungal metabolites the results showed that, highest effective toxin was of the M1, followed by B2, M2 then B1, the mortality percentages at seventh day in concentration 100% of crude were 85.13, 76.12, 73.8 and 61.97 for M1, B2, M2 and B1, respectively.