Pesticidal compositions based on microorganisms, process for their preparation, and their use in agriculture

摘要

Pesticidal composition composed of particles made of a solid support which is colonised by a microorganism, in particular by spores of an entomopathogenic fungus which can be used in the control of crop-destroying insects or for the fertilisation of soils. The support used can be, for example, montmorillonite or attapulgite, and the fungus can be Beauveria bassiana, which has a pathogenic action on larvae of the European corn borer Ostrinia nubilalis. The composition is prepared by a fermentation process in solid medium and can be used by spreading directly as it leaves the fermenter, without further treatment.