Lutte contre les insectes à l'aide de champignons entomopathogènes et de composés chimiques
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Il existe des esp�ces de champignons qui peuvent infecter et tuer les insectes. Ces champignons sont appel�s champignons insectopathog�nes ou entomopathog�nes. Ces champignons sont tr�s sp�cifiques aux insectes, souvent � des esp�ces particuli�res, et n'infectent ni les animaux ni les plantes. La plupart des champignons insectopathog�nes ont besoin de conditions humides pour infecter et se d�velopper, mais certaines esp�ces peuvent �galement infecter les insectes lorsqu'il fait sec. Lorsqu'un insecte a �t� tu� par un champignon, celui-ci �merge du corps de l'insecte pour produire des spores qui peuvent parfois prendre l'apparence d'une poussi�re ou d'un coton . Si vous trouvez de nombreux insectes morts et recouverts de champignons, vous pouvez envisager de fabriquer votre propre bio-insecticide � partir de ces insectes morts. Ramassez-en autant que possible dans le champ, mettez-les dans un bocal avec de l'eau, �crasez-les un peu et m�langez bien. Cela lib�rera les spores fongiques dans l'eau. Filtrez l�g�rement l'eau pour �liminer les gros morceaux d'insectes. La solution restante peut �tre utilis�e pour tester son efficacit�. Vaporisez la solution sur des insectes plac�s dans un bocal. V�rifiez si ces insectes sont infect�s au cours des jours suivants. Vaporisez un autre bocal d'insectes avec de l'eau pure � titre de contr�le.
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