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Comunicação Científica • Arq. Inst. Biol. 76 (3) • Jul-Sep 2009 • https://doi.org/10.1590/1808-1657v76p4892009 linkcopy

Open-access SCREENING OF BEAUVERIA BASSIANA FOR THE CONTROL OF COSMOPOLITES SORDIDUS (GERMAR, 1824) (COLEOPTERA: CURCULIONIDAE)

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    ABSTRACT

    The present study was carried out with the aim of selecting strains of B. bassiana against Cosmopolites sordidus adults. The experiment involved 11 treatments: 10 strains and 1 control. Each treatment had 5 repetitions with 50 insects. The beetles were immersed in a fungal suspension in the concentration of 1.12 x 109 conidia/mL, with only sterile water for the control. When the best strains were identified, they were produced in rice using the tray method, to identify which of them produced the most number of conidia per gram of the substrate. The strains that caused the highest levels of mortality were: IBCB 74, IBCB 87 and IBCB 146, with 58%, 54% and 66% of confirmed mortality, respectively. In regard to the production, there was no significant difference in the sporulation of the three strains.

    KEY WORDS Microbial control; banana crop; banana weevil borer

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    Instituto Biológico Av. Conselheiro Rodrigues Alves, 1252 - Vila Mariana - São Paulo - SP, 04014-002 - São Paulo - SP - Brazil
    E-mail: arquivos@biologico.sp.gov.br
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