Data/hora: 10/06/2024 07:36:25

Provedor de dados: | 1
País: | Brazil
Título: | Insecticide resistance and control failure likelihood among populations of the boll weevil (Anthonomus grandis) from Mato Grosso (Brazil)
Autores: | Oliveira-Marra, Sharrine Omari Domingues; Guedes, Raul Narciso Carvalho; Bastos, Cristina Schetino; Marra, Pedro Henrique Alves; Vivan, Lucia Madalena; Zanine, Anderson  de Moura.
Data: | 2019-09-05
Ano: | 2019
Palavras-chave: | Chemical control; Cotton pest; Resistance management; Survival time; Susceptibility and sustainable pest management.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42714

10.4025/actasciagron.v41i1.42714

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42714/751375148355
Formato: | application/pdf

Fonte:

Acta Scientiarum. Agronomy; Vol 41 (2019): Publicação Contínua; e42714

Acta Scientiarum. Agronomy; v. 41 (2019): Publicação Contínua; e42714

1807-8621

1679-9275

Fonte:

Copyright (c) 2019 Acta Scientiarum. Agronomy

https://creativecommons.org/licenses/by/4.0