Compatibility of the entomopathogenic fungus Beauveria bassiana with etoxazole, spirodiclofen and spiromesifen against Tetranychus urticae

In the Integrated Pest Management of Tetranychus urticae, it is important to use microbiological control agents and acaricides with differing modes action in order reduce risk resistance, so often reported for this mite. This study evaluates effect etoxazole, spirodiclofen, spiromesifen their compatibility Beauveria bassiana on eggs larvae T. urticae. For etoxazole regression lines from Probit Analysis were parallel both cases two developmental stages. Both more effective than (2.5 4.6 times, respectively). The adjusted efficacy produced bioassays neither equal nor parallel. However, confidence intervals did overlap at LC99, indicating sensitivity concentration. mixture B. showed clear antagonistic interaction even though was result interference conidial germination fungus mycelial growth. On other hand, combinations spirodiclofen exhibited additive interaction. results research show that effectiveness mixtures requires product concentrations be maintained no possibility reduction. Furthermore, precludes combined these management