Operational and economic analysis of a West African pilot-scale production plant for aerial conidia of Metarhizium spp. for use as a mycoinsecticide against locusts and grasshoppers

acrididae auxiliaire de lutte biologique biological control biological control organisms conidia control de insectos culture techniques economic analysis fungal spores insect control insecte nuisible locusts lutte biologique metarhizium anisopliae orthoptera pathogens pest insects production costs spore fongique technique de culture