Neotropical Entomology (2001) 30, 407-410

Daniel R. Sosa-Gómez, Katiaíres E. Delpin, Flávio Moscardi and José R.B. Farias (2001)
Natural occurrence of the entomopathogenic fungi Metarhizium, Beauveria and Paecilomyces in soybean under till and no-till cultivation systems
Neotropical Entomology 30 (3), 407-410
Abstract: The occurrence of the entomopathogenic fungi Metarhizium, Beauveria and Paecilomyces in soybean under till and no-till cultivation systems was studied. The number of colony forming units per g of soil and per cm² of leaf area was determined. Soil under no-till system showed a higher incidence of entomopathogenic fungi, but no difference in fungal density was observed on leaves. Thus the probability of infection for susceptible leaf inhabiting insects should be similar in both systems.

A ocorrência de fungos entomopatogênicos Metarhizium, Beauveria e Paecilomyces foi estudada em condições de semeadura direta e convencional da soja. Foi determinada a densidade de unidades formadoras de colônia por g de solo e por cm² de folíolos de soja. Verificou-se que no solo sob semeadura direta ocorreu maior incidência dos entomopatógenos, mas sobre os folíolos essa diferença não ocorreu, proporcionando as mesmas possibilidades de infecção nos insetos da parte aérea suscetíveis que ocorrem nas duas condições de cultivo.
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Database assignments for author(s): Daniel R. Sosa-Gomez, Flavio Moscardi

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
surveys/distribution/isolation
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
Beauveria bassiana (entomopathogen)			Brazil (south)
Metarhizium anisopliae (entomopathogen)			Brazil (south)
Purpureocillium lilacinum (pathogen of nematodes)