Effect of Disinfectants and Pesticides Used in Poultry Houses on Beauveria Bassiana (Bals.) Vuill.fungus

Alves, L. F. A.; Mamprim, AP; Formentini, MA; Martins, Carolina Castro; Pinto, Fabiana Gisele da Silva

doi:10.1590/1806-9061-2015-0055

Cited by 4 publications

(2 citation statements)

References 32 publications

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“…To determine the compatibility of entomopathogenic fungi with formulated commercial pesticides (section 2.2 and 2.3), acetone (section 2.4) and laboratory‐grade pesticides (section 2.5), the biological index (BI) proposed by Rossi‐Zalaf et al 35 . as cited in Alves et al 16 . and others 36,37 was used, calculated as

italicBI = \frac{((), 47 * italicVG) + ((), 43 * italicSP) + ((), 10 * italicGER)}{100}

where VG is the percentage of vegetative growth of fungal colony, SP is the percentage of colony sporulation and GER is the percentage of conidia germination relative to the control.…”

Section: Methodsmentioning

confidence: 99%

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Compatibility of Metarhizium anisopliae and Beauveria bassiana with insecticides and fungicides used in macadamia production in Australia

Khun

Ash

Stevens

et al. 2020

Pest Management Science

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Background Integrating fungal biocontrol agents into crop protection programs dominated by synthetic pesticides is an important first step towards developing an integrated pest management (IPM) program; however, their successful integration relies on an understanding of how their performance may be impacted by the remaining agrochemicals deployed for managing other pests and diseases. In this study we tested 10 formulated pesticides used in macadamia production at different concentrations to determine their effects on the germination, mycelial growth and sporulation of Metarhizium anisopliae and Beauveria bassiana in vitro. Further tests with laboratory‐grade actives of the noncompatible pesticides were conducted to determine whether any antagonistic effects were caused by the active constituent or by formulation additives. Results At their registered concentrations, formulated trichlorfon, acephate and indoxacarb were compatible with M. anisopliae, whereas B. bassiana showed compatibility with formulated trichlorfon, acephate, indoxacarb, sulfoxaflor and spinetoram. Bioassays using laboratory‐grade active constituents indicated that the adverse impact of formulated beta‐cyfluthrin on both fungal species and that of formulated methidathion on B. bassiana is probably due to components of the emulsifiable concentrate formulations rather than their active constituents. Diazinon was the only insecticidal active that showed high toxicity to both fungal species. The two fungicides, carbendazim and pyraclostrobin, were toxic to both fungal species at all tested concentrations. Conclusion Our results identify which pesticides used on macadamias in Australia are compatible and incompatible with entomopathogenic fungi. Future studies on pesticide degradation rates will help define the spray intervals required to eliminate these adverse effects.

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italicBI = \frac{((), 47 * italicVG) + ((), 43 * italicSP) + ((), 10 * italicGER)}{100}

where VG is the percentage of vegetative growth of fungal colony, SP is the percentage of colony sporulation and GER is the percentage of conidia germination relative to the control.…”

Section: Methodsmentioning

confidence: 99%

“…Many insecticides have been recognised as compatible with entomopathogenic fungi 9–11 but some have been shown to be antagonistic 16–18 . However, most studies that have identified antagonistic interactions have been unable to identify the underlying cause of these adverse responses.…”

Section: Introductionmentioning

confidence: 99%