| Registro completo |
| Provedor de dados: |
Agronomy
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| País: |
Brazil
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| Título: |
Insecticide resistance and control failure likelihood among populations of the boll weevil (Anthonomus grandis) from Mato Grosso (Brazil)
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| Autores: |
Oliveira-Marra, Sharrine Omari Domingues
Guedes, Raul Narciso Carvalho
Bastos, Cristina Schetino
Marra, Pedro Henrique Alves
Vivan, Lucia Madalena
Zanine, Anderson de Moura
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| Data: |
2019-09-05
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| Ano: |
2019
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| Palavras-chave: |
Chemical control
Cotton pest
Resistance management
Survival time
Susceptibility and sustainable pest management.
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| Resumo: |
The cotton producers from southern Mato Grosso are currently experiencing control failure with the use of the use of insecticides against the cotton boll weevil Anthonomus grandis Boheman, the main pest species of this commodity. Therefore, the present study was designed to survey insecticide resistance and the associated likelihood of control failure among boll weevil populations in the region. Ten insect populations were sampled during the 2016/2017 season and subjected to time-mortality (contact) bioassays in glass vials impregnated with dried insecticide residues at their respective label rates. The three insecticides most frequently used in the region were surveyed: the organophosphate malathion and the pyrethroids beta-cyfluthrin and zeta-cypermethrin. The survival curves showed estimates of the respective median survival time (LT50) for each combination of insecticide and insect copulation. However, there were no significant differences in susceptibility among populations. The estimates of control failure likelihood for each compound at their respective label rates also indicated negligible risk of control failure with their use. These findings are consistent with time-mortality results indicating the lack of insecticide resistant populations at the surveyed sampling sites, suggesting that the reported field control failures result from other causes such as problems with insecticide application.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42714
10.4025/actasciagron.v41i1.42714
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| Editor: |
Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42714/751375148355
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| Formato: |
application/pdf
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| Fonte: |
Acta Scientiarum. Agronomy; Vol 41 (2019): Publicação Contínua; e42714
Acta Scientiarum. Agronomy; v. 41 (2019): Publicação Contínua; e42714
1807-8621
1679-9275
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| Direitos: |
Copyright (c) 2019 Acta Scientiarum. Agronomy
https://creativecommons.org/licenses/by/4.0
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