Effect of Beauveria bassiana-Seed Treatment on Zea mays L. Response against Spodoptera frugiperda

Spodoptera frugiperda is a widely distributed insect pest that causes major economic losses in various crops, particularly maize. On the other hand, Beauveria bassiana an entomopathogenic fungus establishes symbiotic associations with many plants and contributes to tolerance against biotic abiotic stresses. In present work, laboratory experiments, effects of B. strain GHA, addition native (PTG4), delivered via seed treatment maize seedlings, were evaluated on S. growth, development, mortality. We inoculated seeds 1 × 106B. blastospores; then these germinated grown seedlings under growth chamber conditions. Third-instar larvae allowed feed bassiana-treated -untreated (negative control) until reaching sixth instar transferred artificial diet adult stage. Results showed feeding PTG4-treated prolonged their larval Furthermore, treated strains yielded fewer male moths compared untreated control plants. Under field conditions, 106 (first trial) 108 (second (GHA strain) blastospores used for corn inoculation. first trial, there higher number negative those bassiana. No found second trial. conclusion, reduced infestation trials. development was also affected