Tropical Plant Pathology (2012) 37, 44-49

Heverly das Merces Guinossi, Flávio Moscardi, Maria Cristina Neves de Oliveira and Daniel Ricardo Sosa-Gómez (2012)
Spatial dispersal of Metarhizium anisopliae and Beauveria bassiana in soybean fields
Tropical Plant Pathology 37 (1), 44-49
Abstract: The dispersal and persistence of Beauveria bassiana and Metarhizium anisopliae following application in soybean fields as kaolin dust and sprays of soybean oil formulations were investigated. Fungal dispersion was evaluated from a centrally-treated area by sampling leaflets on eight transects at 20-m intervals in concentric rings up to 100 m from the central area. Density of colony-forming units (CFU) per unit leaf area was determined by washing the soybean leaflets in water containing Tween 80, and plating the aqueous suspensions on an oatmeal-dodine semi-selective agar medium. Spatial dispersal of B. bassiana in soybean field was significantly higher when conidia were applied as an oil formulation compared with a kaolin dust formulation. No significant differences were observed in M. anisopliae CFU number between sprayed or dusted plots. Oil-based formulations favor the dispersal of B. bassiana in soybean crops, but not the dispersal of M. anisopliae. Kaolin-based formulations are not suitable for B. bassiana or M. anisopliae dispersal.
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Full text of article
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:
transmission/dispersal

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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)