Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/217226
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dc.contributor.authorPINHEIRO, P. V.pt_BR
dc.contributor.authorQUINTELA, E. D.pt_BR
dc.contributor.authorOLIVEIRA, J. P. dept_BR
dc.contributor.authorSERAPHIN, J. C.pt_BR
dc.date.accessioned2011-04-09T14:39:37Z-
dc.date.available2011-04-09T14:39:37Z-
dc.date.created2009-06-09pt_BR
dc.date.issued2009pt_BR
dc.identifier.citationPesquisa Agropecuária Brasileira, v. 44, n. 4, p. 354-360, abr. 2009.pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/217226pt_BR
dc.descriptionThe 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectÓleo de nimpt_BR
dc.titleToxicity of neem oil to Bemisia tabaci biotype B nymphs reared on dry bean.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2011-04-10T11:11:11Zpt_BR
dc.subject.thesagroAzadirachta Indicapt_BR
dc.subject.thesagroBemisia Tabacipt_BR
dc.subject.thesagroFeijãopt_BR
dc.subject.thesagroMosca Brancapt_BR
dc.subject.thesagroNimpt_BR
dc.subject.thesagroPhaseolus Vulgarispt_BR
riaa.ainfo.id217226pt_BR
riaa.ainfo.lastupdate2009-10-19pt_BR
dc.identifier.doihttps://doi.org/10.1590/S0100-204X2009000400004eng
dc.contributor.institutionPATRICIA VALLE PINHEIRO, CNPAFpt_BR
dc.contributor.institutionELIANE DIAS QUINTELA, CNPAFeng
dc.contributor.institutionJAISON PEREIRA DE OLIVEIRA, CNPAFeng
dc.contributor.institutionJOSÉ CARLOS SERAPHIN, UFG.eng
Appears in Collections:Artigo em periódico indexado (CNPAF)

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