Microbial Prospection for Bioherbicide Production and Evaluation of Methodologies for Maximizing Phytotoxic Activity

The occurrence of several weeds in crops high economic value directly affects grain yield. This scenario led to the mass investigation chemical products that circumvent these adversities and provide control potential. Nonetheless, excessive application herbicides has generated significant concerns about environment. Accordingly, adoption alternative practices, such as microbial metabolites, emerges strategic actions, having a sustainability bias allowing reduction risks human animal contamination. Appropriately, this study proposed conduct prospection microorganisms capable producing secondary metabolites inhibit growth generate phytotoxicity weeds. Furthermore, increase herbicidal activity, different strategies were evaluated involving co-cultivation ultrasound-assisted extraction after fermentation. 63 isolated from with disease symptoms submitted separately submerged Initially, bioherbicidal activity was Cucumis sativus plants, most promising applied Amaranthus hybridus Echinochloa crusgalli. Treatments fermented broth obtained fermentation process indicated an inhibition plant development. strains A14.2 B22.2 (Nigrospora sphaerica), B14 (Bacillus velezensis), γ (Aspergillus flavus).