Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)?
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/12276 |
Resumo: | In integrated pest management programs (IPM) of the cotton crop, the joint use of several control methods is advocated. In this crop, the boll weevil stands out as the main pest, since it causes expressive losses in yield and demands a great deal of applications of insecticides for its control which in general causes biological disequilibrium. A strategy to reduce those disequilibriums is the use of selective compounds. Thus, the present work is intended to evaluate the effects of six insecticides registered in MAPA for control of Anthonomus grandis over Harmonia axyridis under laboratory conditions. Eggs, third instar larvae, pupae and adults of H. axyridis were treated with the products ethiprole, etofenprox, lambdacyhalothrin, lambdacyhalothrin + chlorantraniliprole, pymetrozine and thiamethoxam + chlorantraniliprole via spraying in Potter tower, wich were applied at their highest concentrations recommended for the boll weevil control. After they were treated, the insects were maintained under controlled conditions of 24±2ºC, RH of 70±10% and photoperiod of 12:12 (L:D) and fed eggs of Ephestia kuehniella ad libitum. The completely randomized design with five replications was utilized, consisting of either eight insects or fourteen eggs. It was found that the predator in its initial developmental stages (eggs and larvae) was more sensitive to the insecticides, followed by the pupa and adult stages. The insecticide ethiprole was the only that caused no lethal effect to the predator in any developmental stage; however, it provoked some sublethal effects when applied on its eggs (reduction of the larval stage and of the reproduction). Lambdacyhalothrin caused high mortality of the predator in all the developmental stages which were exposed to the product. Due the low toxicity presented by the insecticide ethiprole, this compound must be prioritized in IPM programs in the cotton crop aiming at the preservation of the ladybug H. axyridis. The other insecticides must be evaluated under semi-field and field conditions for the confirmation of the toxicity to that predator. |
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Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)?Are the insecticides used to control cotton crop pests selective to Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)?Algodoeiro - PragasPragas - Controle QuímicoInseticidasCotton crop - PestsPests - Chemical controlInsecticideEntomologia AgrícolaIn integrated pest management programs (IPM) of the cotton crop, the joint use of several control methods is advocated. In this crop, the boll weevil stands out as the main pest, since it causes expressive losses in yield and demands a great deal of applications of insecticides for its control which in general causes biological disequilibrium. A strategy to reduce those disequilibriums is the use of selective compounds. Thus, the present work is intended to evaluate the effects of six insecticides registered in MAPA for control of Anthonomus grandis over Harmonia axyridis under laboratory conditions. Eggs, third instar larvae, pupae and adults of H. axyridis were treated with the products ethiprole, etofenprox, lambdacyhalothrin, lambdacyhalothrin + chlorantraniliprole, pymetrozine and thiamethoxam + chlorantraniliprole via spraying in Potter tower, wich were applied at their highest concentrations recommended for the boll weevil control. After they were treated, the insects were maintained under controlled conditions of 24±2ºC, RH of 70±10% and photoperiod of 12:12 (L:D) and fed eggs of Ephestia kuehniella ad libitum. The completely randomized design with five replications was utilized, consisting of either eight insects or fourteen eggs. It was found that the predator in its initial developmental stages (eggs and larvae) was more sensitive to the insecticides, followed by the pupa and adult stages. The insecticide ethiprole was the only that caused no lethal effect to the predator in any developmental stage; however, it provoked some sublethal effects when applied on its eggs (reduction of the larval stage and of the reproduction). Lambdacyhalothrin caused high mortality of the predator in all the developmental stages which were exposed to the product. Due the low toxicity presented by the insecticide ethiprole, this compound must be prioritized in IPM programs in the cotton crop aiming at the preservation of the ladybug H. axyridis. The other insecticides must be evaluated under semi-field and field conditions for the confirmation of the toxicity to that predator.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Em programas de manejo integrado de pragas (MIP) do algodoeiro é preconizado o uso conjunto de vários métodos de controle. Nesta cultura o bicudo destaca-se como a principal praga, visto que causa perdas expressivas na produção e exige muitas aplicações de inseticidas para seu controle que geralmente causam desequilíbrios biológicos. Uma estratégia para amenizar esses desequilíbrios é o uso de compostos seletivos. Desta forma, o presente trabalho teve como objetivo avaliar os efeitos de seis inseticidas registrados no MAPA para o controle de Anthonomus grandis sobre Harmonia axyridis em condições de laboratório. Ovos, larvas de terceiro ínstar, pupas e adultos de H. axyridis foram tratados com os produtos etiprole, etofenproxi, lambdacialotrina, lambdacialotrina + clorantraniliprole, pimetrozina e tiametoxan + clorantraniliprole via pulverização em torre de Potter, os quais foram aplicados em suas maiores concentrações recomendadas para o controle do bicudo. Após serem tratados, os insetos foram mantidos sob condições controladas de 24±2ºC, UR de 70±10% e fotoperíodo de 12:12 (L:D) e alimentados com ovos de Ephestia kuehniella ad libitum. Foi utilizado o delineamento inteiramente casualizado com cinco repetições, sendo constituída de oito insetos ou 14 ovos. Verificou-se que o predador em suas fases iniciais de desenvolvimento (ovos e larvas) foi mais sensível aos inseticidas, seguido pelas fases de pupa e adulta. O inseticida etiprole foi o único que não causou efeito letal ao predador em nenhuma fase de desenvolvimento; entretanto, provocou alguns efeitos subletais quando aplicado em seus ovos (redução da fase larval e da reprodução). Lambdacialotrina causou alta mortalidade do predador em todas as fases de desenvolvimento que foram expostas ao produto. Em função da baixa toxicidade apresentada pelo inseticida etiprole, este composto deve ser priorizado em programas de MIP na cultura algodoeira visando a preservação da joaninha H. axyridis. Os demais inseticidas devem ser avaliados em condições de semicampo e campo para comprovação da toxicidade a esse predador.Universidade Federal de LavrasPrograma de Pós-Graduação em EntomologiaUFLAbrasilDepartamento de EntomologiaCarvalho, Geraldo AndradeZanetti, RonaldSilva, Rogério AntônioAbbade Neto, Dyrson de Oliveira2017-02-16T11:53:03Z2017-02-16T11:53:03Z2017-02-072017-01-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfABBADE NETO, D. de O. Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? 2017. 57 p. Dissertação (Mestrado em Entomologia)-Universidade Federal de Lavras, Lavras, 2017.http://repositorio.ufla.br/jspui/handle/1/12276porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2023-05-08T19:17:17Zoai:localhost:1/12276Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-08T19:17:17Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? Are the insecticides used to control cotton crop pests selective to Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
title |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
spellingShingle |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? Abbade Neto, Dyrson de Oliveira Algodoeiro - Pragas Pragas - Controle Químico Inseticidas Cotton crop - Pests Pests - Chemical control Insecticide Entomologia Agrícola |
title_short |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
title_full |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
title_fullStr |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
title_full_unstemmed |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
title_sort |
Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? |
author |
Abbade Neto, Dyrson de Oliveira |
author_facet |
Abbade Neto, Dyrson de Oliveira |
author_role |
author |
dc.contributor.none.fl_str_mv |
Carvalho, Geraldo Andrade Zanetti, Ronald Silva, Rogério Antônio |
dc.contributor.author.fl_str_mv |
Abbade Neto, Dyrson de Oliveira |
dc.subject.por.fl_str_mv |
Algodoeiro - Pragas Pragas - Controle Químico Inseticidas Cotton crop - Pests Pests - Chemical control Insecticide Entomologia Agrícola |
topic |
Algodoeiro - Pragas Pragas - Controle Químico Inseticidas Cotton crop - Pests Pests - Chemical control Insecticide Entomologia Agrícola |
description |
In integrated pest management programs (IPM) of the cotton crop, the joint use of several control methods is advocated. In this crop, the boll weevil stands out as the main pest, since it causes expressive losses in yield and demands a great deal of applications of insecticides for its control which in general causes biological disequilibrium. A strategy to reduce those disequilibriums is the use of selective compounds. Thus, the present work is intended to evaluate the effects of six insecticides registered in MAPA for control of Anthonomus grandis over Harmonia axyridis under laboratory conditions. Eggs, third instar larvae, pupae and adults of H. axyridis were treated with the products ethiprole, etofenprox, lambdacyhalothrin, lambdacyhalothrin + chlorantraniliprole, pymetrozine and thiamethoxam + chlorantraniliprole via spraying in Potter tower, wich were applied at their highest concentrations recommended for the boll weevil control. After they were treated, the insects were maintained under controlled conditions of 24±2ºC, RH of 70±10% and photoperiod of 12:12 (L:D) and fed eggs of Ephestia kuehniella ad libitum. The completely randomized design with five replications was utilized, consisting of either eight insects or fourteen eggs. It was found that the predator in its initial developmental stages (eggs and larvae) was more sensitive to the insecticides, followed by the pupa and adult stages. The insecticide ethiprole was the only that caused no lethal effect to the predator in any developmental stage; however, it provoked some sublethal effects when applied on its eggs (reduction of the larval stage and of the reproduction). Lambdacyhalothrin caused high mortality of the predator in all the developmental stages which were exposed to the product. Due the low toxicity presented by the insecticide ethiprole, this compound must be prioritized in IPM programs in the cotton crop aiming at the preservation of the ladybug H. axyridis. The other insecticides must be evaluated under semi-field and field conditions for the confirmation of the toxicity to that predator. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-02-16T11:53:03Z 2017-02-16T11:53:03Z 2017-02-07 2017-01-30 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
ABBADE NETO, D. de O. Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? 2017. 57 p. Dissertação (Mestrado em Entomologia)-Universidade Federal de Lavras, Lavras, 2017. http://repositorio.ufla.br/jspui/handle/1/12276 |
identifier_str_mv |
ABBADE NETO, D. de O. Inseticidas utilizados no controle de pragas do algodoeiro são seletivos para Harmonia axyridis (Pallas) (Coleoptera: Coccinellidae)? 2017. 57 p. Dissertação (Mestrado em Entomologia)-Universidade Federal de Lavras, Lavras, 2017. |
url |
http://repositorio.ufla.br/jspui/handle/1/12276 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Entomologia UFLA brasil Departamento de Entomologia |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Entomologia UFLA brasil Departamento de Entomologia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
instname_str |
Universidade Federal de Lavras (UFLA) |
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UFLA |
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UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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1807835224939167744 |