Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean.
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
Texto Completo: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/217226 https://doi.org/10.1590/S0100-204X2009000400004 |
Resumo: | The objective of this work was to determine the most susceptible nymphal stage of Bemisia tabaci biotype B to neem (Azadirachta indica A. Juss.) oil applied to dry bean (Phaseolus vulgaris L.) in a screenhouse. A solution of commercial oil (Dalneem) extracted from neem seeds was sprayed directly on each nymphal instar at 0, 0.1, 0.25, 0.5, 1 and 2% concentrations for lethal concentration (LC) determination, and at 0, 0.5 and 1% concentrations for lethal time (LT) determination. The number of living and dead nymphs was recorded five days after spraying for LC determination, and daily during six days for LT determination. The LC50 estimated for fourth instar nymphs occurred at 0.56% concentration. For all instars, LC50 and LC95 were estimated at 0.32 and 2.78% concentrations, respectively. The estimated values of LT50 at 1% concentration were 2.46, 4.45, 3.02 and 6.98 days for the first to fourth instars, respectively. The LT50 occurred at five days for 0.5% and at four days for 1% concentration in all instars. A mortality rate of over 80% was observed on the 6th day for the first to third instars at 1% concentration. The first three nymphal stages were more susceptible to neem oil when compared to the fourth nymphal stage. |
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Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean.Óleo de nimAzadirachta IndicaBemisia TabaciFeijãoMosca BrancaNimPhaseolus VulgarisThe objective of this work was to determine the most susceptible nymphal stage of Bemisia tabaci biotype B to neem (Azadirachta indica A. Juss.) oil applied to dry bean (Phaseolus vulgaris L.) in a screenhouse. A solution of commercial oil (Dalneem) extracted from neem seeds was sprayed directly on each nymphal instar at 0, 0.1, 0.25, 0.5, 1 and 2% concentrations for lethal concentration (LC) determination, and at 0, 0.5 and 1% concentrations for lethal time (LT) determination. The number of living and dead nymphs was recorded five days after spraying for LC determination, and daily during six days for LT determination. The LC50 estimated for fourth instar nymphs occurred at 0.56% concentration. For all instars, LC50 and LC95 were estimated at 0.32 and 2.78% concentrations, respectively. The estimated values of LT50 at 1% concentration were 2.46, 4.45, 3.02 and 6.98 days for the first to fourth instars, respectively. The LT50 occurred at five days for 0.5% and at four days for 1% concentration in all instars. A mortality rate of over 80% was observed on the 6th day for the first to third instars at 1% concentration. The first three nymphal stages were more susceptible to neem oil when compared to the fourth nymphal stage.PATRICIA VALLE PINHEIRO, CNPAFELIANE DIAS QUINTELA, CNPAFJAISON PEREIRA DE OLIVEIRA, CNPAFJOSÉ CARLOS SERAPHIN, UFG.PINHEIRO, P. V.QUINTELA, E. D.OLIVEIRA, J. P. deSERAPHIN, J. C.2011-04-09T14:39:37Z2011-04-09T14:39:37Z2009-06-0920092011-04-10T11:11:11Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlePesquisa Agropecuária Brasileira, v. 44, n. 4, p. 354-360, abr. 2009.http://www.alice.cnptia.embrapa.br/alice/handle/doc/217226https://doi.org/10.1590/S0100-204X2009000400004enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-15T21:53:39Zoai:www.alice.cnptia.embrapa.br:doc/217226Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-15T21:53:39falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-15T21:53:39Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
title |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
spellingShingle |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. PINHEIRO, P. V. Óleo de nim Azadirachta Indica Bemisia Tabaci Feijão Mosca Branca Nim Phaseolus Vulgaris |
title_short |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
title_full |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
title_fullStr |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
title_full_unstemmed |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
title_sort |
Toxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean. |
author |
PINHEIRO, P. V. |
author_facet |
PINHEIRO, P. V. QUINTELA, E. D. OLIVEIRA, J. P. de SERAPHIN, J. C. |
author_role |
author |
author2 |
QUINTELA, E. D. OLIVEIRA, J. P. de SERAPHIN, J. C. |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
PATRICIA VALLE PINHEIRO, CNPAF ELIANE DIAS QUINTELA, CNPAF JAISON PEREIRA DE OLIVEIRA, CNPAF JOSÉ CARLOS SERAPHIN, UFG. |
dc.contributor.author.fl_str_mv |
PINHEIRO, P. V. QUINTELA, E. D. OLIVEIRA, J. P. de SERAPHIN, J. C. |
dc.subject.por.fl_str_mv |
Óleo de nim Azadirachta Indica Bemisia Tabaci Feijão Mosca Branca Nim Phaseolus Vulgaris |
topic |
Óleo de nim Azadirachta Indica Bemisia Tabaci Feijão Mosca Branca Nim Phaseolus Vulgaris |
description |
The objective of this work was to determine the most susceptible nymphal stage of Bemisia tabaci biotype B to neem (Azadirachta indica A. Juss.) oil applied to dry bean (Phaseolus vulgaris L.) in a screenhouse. A solution of commercial oil (Dalneem) extracted from neem seeds was sprayed directly on each nymphal instar at 0, 0.1, 0.25, 0.5, 1 and 2% concentrations for lethal concentration (LC) determination, and at 0, 0.5 and 1% concentrations for lethal time (LT) determination. The number of living and dead nymphs was recorded five days after spraying for LC determination, and daily during six days for LT determination. The LC50 estimated for fourth instar nymphs occurred at 0.56% concentration. For all instars, LC50 and LC95 were estimated at 0.32 and 2.78% concentrations, respectively. The estimated values of LT50 at 1% concentration were 2.46, 4.45, 3.02 and 6.98 days for the first to fourth instars, respectively. The LT50 occurred at five days for 0.5% and at four days for 1% concentration in all instars. A mortality rate of over 80% was observed on the 6th day for the first to third instars at 1% concentration. The first three nymphal stages were more susceptible to neem oil when compared to the fourth nymphal stage. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-06-09 2009 2011-04-09T14:39:37Z 2011-04-09T14:39:37Z 2011-04-10T11:11:11Z |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
Pesquisa Agropecuária Brasileira, v. 44, n. 4, p. 354-360, abr. 2009. http://www.alice.cnptia.embrapa.br/alice/handle/doc/217226 https://doi.org/10.1590/S0100-204X2009000400004 |
identifier_str_mv |
Pesquisa Agropecuária Brasileira, v. 44, n. 4, p. 354-360, abr. 2009. |
url |
http://www.alice.cnptia.embrapa.br/alice/handle/doc/217226 https://doi.org/10.1590/S0100-204X2009000400004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
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Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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EMBRAPA |
institution |
EMBRAPA |
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Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
collection |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
repository.name.fl_str_mv |
Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
cg-riaa@embrapa.br |
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1794503320897847296 |