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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
05/05/2022 |
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Data da última atualização: |
05/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
NASCIMENTO, V. F.; AUAD, A. M.; RESENDE, T. T. de; VISCONDE, A. J. M.; DIAS, M. L. |
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Afiliação: |
VINÍCIUS FERRAZ NASCIMENTO, Universidade Federal de Juiz de Fora; ALEXANDER MACHADO AUAD, CNPGL; TIAGO TEIXEIRA DE RESENDE, CNPGL; AMANDA JDENAINA MENDOZA VISCONDE, Centro Universitário UniAcademia; MARCELLE LEANDRO DIAS, Universidade Federal de Juiz de Fora. |
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Título: |
Insecticidal activity of aqueous extracts of plant origin on Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae). |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Agronomy, v. 12, n. 4, 947, 2022. |
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DOI: |
https://doi.org/10.3390/agronomy12040947 |
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Idioma: |
Inglês |
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Conteúdo: |
The spittlebug Mahanarva spectabilis (Distant, 1909) is considered the main and most limiting pest of elephant grass (Pennisetum purpureum Schum.), and has caused economic losses to Brazilian farmers. In this study, we evaluated the insecticidal effects of aqueous extracts of garlic, rue, cinnamon, lemongrass, clove, star anise, eucalyptus, tobacco, and thyme on M. spectabilis nymphs. The results indicated that the tobacco extract was the most effective among all extracts, as it reached a mortality of 76%. The next most effective was star anise extract and cinnamon extract was the least effective. In the second stage of tests, we evaluated the insecticidal potential of five concentrations of tobacco extract. The values of LD50 and LD90 calculated for aqueous tobacco extract were, respectively, 11.5% and 33.3% 24 h after application, and 9.2% and 29.5% 48 h after application. We also evaluated different methods of extraction, through comparative tests, and the methods of infusion and decoction proved to be equivalent to those of the method of extraction by ultrasound. We conclude that among the nine aqueous plant extracts tested, tobacco extract was the only one recommended against M. spectabilis, as it showed insecticidal activity, with better results at a concentration of 25%, and with extraction by infusion and decoction. |
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Palavras-Chave: |
Agroecologia; Extraction methods; Inseticida botanico; Plant active ingredients. |
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Thesagro: |
Cigarrinha; Extração; Inseticida; Mortalidade; Praga de Planta. |
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Thesaurus Nal: |
Agroecology; Botanical insecticides; Mortality; Pest control. |
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Categoria do assunto: |
O Insetos e Entomologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1142675/1/Insecticidal-activity.pdf
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Marc: |
LEADER 02343naa a2200337 a 4500
001 2142675
005 2022-05-05
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.3390/agronomy12040947$2DOI
100 1 $aNASCIMENTO, V. F.
245 $aInsecticidal activity of aqueous extracts of plant origin on Mahanarva spectabilis (Distant, 1909) (Hemiptera$bCercopidae).$h[electronic resource]
260 $c2022
520 $aThe spittlebug Mahanarva spectabilis (Distant, 1909) is considered the main and most limiting pest of elephant grass (Pennisetum purpureum Schum.), and has caused economic losses to Brazilian farmers. In this study, we evaluated the insecticidal effects of aqueous extracts of garlic, rue, cinnamon, lemongrass, clove, star anise, eucalyptus, tobacco, and thyme on M. spectabilis nymphs. The results indicated that the tobacco extract was the most effective among all extracts, as it reached a mortality of 76%. The next most effective was star anise extract and cinnamon extract was the least effective. In the second stage of tests, we evaluated the insecticidal potential of five concentrations of tobacco extract. The values of LD50 and LD90 calculated for aqueous tobacco extract were, respectively, 11.5% and 33.3% 24 h after application, and 9.2% and 29.5% 48 h after application. We also evaluated different methods of extraction, through comparative tests, and the methods of infusion and decoction proved to be equivalent to those of the method of extraction by ultrasound. We conclude that among the nine aqueous plant extracts tested, tobacco extract was the only one recommended against M. spectabilis, as it showed insecticidal activity, with better results at a concentration of 25%, and with extraction by infusion and decoction.
650 $aAgroecology
650 $aBotanical insecticides
650 $aMortality
650 $aPest control
650 $aCigarrinha
650 $aExtração
650 $aInseticida
650 $aMortalidade
650 $aPraga de Planta
653 $aAgroecologia
653 $aExtraction methods
653 $aInseticida botanico
653 $aPlant active ingredients
700 1 $aAUAD, A. M.
700 1 $aRESENDE, T. T. de
700 1 $aVISCONDE, A. J. M.
700 1 $aDIAS, M. L.
773 $tAgronomy$gv. 12, n. 4, 947, 2022.
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Registro original: |
Embrapa Gado de Leite (CNPGL) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
22/12/1999 |
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Data da última atualização: |
22/12/1999 |
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Autoria: |
MATTOSO, L. H. C.; RIUL JUNIOR, A.; HERRMANN, P. S. P.; COLNAGO, L. A.; PARIZOTTO, N. A.; BARANAUSKA, V.; OLIVEIRA JUNIOR, O. N. |
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Afiliação: |
EMBRAPA-CNPDIA; USP-IFSC; USP-IQSC; UFSCar; UNICAMP. |
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Título: |
Atomic force microscopy investigation of ultra-thin polyaniline films. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS, 7., Sept. 1995, Numana, Ancona, Italia. Abstract book... [S.l.: s.n.], 1995. |
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Páginas: |
p.76. |
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Idioma: |
Inglês |
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Notas: |
Ref.P-4.41. |
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Conteúdo: |
Atomic force microscopy (AFM) has been used to investigate the morphology of ultra-thin films of parent polyaniline (PAni) prepared via the Langmuir-Blodgett technique. The LB film was readily obtained in the doped state, by using an acidic subphase and a pre-doped polymer. A well-defined, fibrillar-like structure was obserced by AFM, indicating some preferential orientation of the PAni fibrils. These fibrils are approximately 60 to approximately 160nm wide with porous of apparent height of approximately 1nm, consistent with a more compact and less porous morphology when compared to conventional thicker films. |
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Palavras-Chave: |
Films; Morphology; Polyaniline; Ultra-thin. |
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Thesaurus NAL: |
atomic force microscopy. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01445naa a2200277 a 4500
001 1026935
005 1999-12-22
008 1995 bl uuuu u00u1 u #d
100 1 $aMATTOSO, L. H. C.
245 $aAtomic force microscopy investigation of ultra-thin polyaniline films.
260 $c1995
300 $ap.76.
500 $aRef.P-4.41.
520 $aAtomic force microscopy (AFM) has been used to investigate the morphology of ultra-thin films of parent polyaniline (PAni) prepared via the Langmuir-Blodgett technique. The LB film was readily obtained in the doped state, by using an acidic subphase and a pre-doped polymer. A well-defined, fibrillar-like structure was obserced by AFM, indicating some preferential orientation of the PAni fibrils. These fibrils are approximately 60 to approximately 160nm wide with porous of apparent height of approximately 1nm, consistent with a more compact and less porous morphology when compared to conventional thicker films.
650 $aatomic force microscopy
653 $aFilms
653 $aMorphology
653 $aPolyaniline
653 $aUltra-thin
700 1 $aRIUL JUNIOR, A.
700 1 $aHERRMANN, P. S. P.
700 1 $aCOLNAGO, L. A.
700 1 $aPARIZOTTO, N. A.
700 1 $aBARANAUSKA, V.
700 1 $aOLIVEIRA JUNIOR, O. N.
773 $tIn: INTERNATIONAL CONFERENCE ON ORGANIZED MOLECULAR FILMS, 7., Sept. 1995, Numana, Ancona, Italia. Abstract book... [S.l.: s.n.], 1995.
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