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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
24/11/2022 |
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Data da última atualização: |
24/11/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
TADINI, A. M.; NICOLODELLI, G.; HAJJOUL, H.; MILORI, D. M. B. P.; MOUNIER, S. |
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Afiliação: |
DEBORA MARCONDES BASTOS PEREIRA, CNPDIA. |
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Título: |
Humic fractions from Amazon soils: Lifetime study and humification process by fluorescence spectroscopy. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Applied Geochemistry, v. 147, a105486, 2022. |
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Páginas: |
1-8 |
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ISSN: |
0883-2927 |
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DOI: |
https://doi.org/10.1016/j.apgeochem.2022.105486 |
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Idioma: |
Inglês |
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Conteúdo: |
The Amazon Forest is an important and primordial ecosystem, as it controls the dynamics of soil organic matter (SOM) and is considered one of the crucial carbon reservoirs in the world. Based on that, this study evaluated the molecular properties of humic (HA) and fulvic (FA) acid from Amazon soil, with and without Cu(II) ions, by Time-Resolved Laser Fluorescence Spectroscopy (TRLFS) and Fluorescence Spectroscopy (FS). Fluorescence excitation-emission matrix (EEM) was obtained by FS, and EEM spectra were treated by canonical polyadic/ parallel factor analysis (EEM-CP/PARAFAC). The results showed that the humification index (A465nm) determined by FS is directly dependent on fluorophores? CII/CI ratio in these soils with depth (r = 0.89), especially for HA samples in deep horizons, which demonstrated that the CII consists more complex and humified structure of the SOM. The lifetime decay showed the presence of static quenching in the humic fractions. From the lifetime data provided by TRLFS and the different correlations with carbon content and A465nm, it can be suggested that the fluorescence suppression modifies the molecular properties of the humic fractions with the addition of Cu(II) ions, such as altering the mobility and availability of the metal in the complexation reactions in these Amazonian Spodosols, mainly for the fulvic fraction. |
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Palavras-Chave: |
Amazon soil; Humic fractions; Humification process; Lifetime; Molecular changes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02153naa a2200265 a 4500
001 2148734
005 2022-11-24
008 2022 bl uuuu u00u1 u #d
022 $a0883-2927
024 7 $ahttps://doi.org/10.1016/j.apgeochem.2022.105486$2DOI
100 1 $aTADINI, A. M.
245 $aHumic fractions from Amazon soils$bLifetime study and humification process by fluorescence spectroscopy.$h[electronic resource]
260 $c2022
300 $a1-8
520 $aThe Amazon Forest is an important and primordial ecosystem, as it controls the dynamics of soil organic matter (SOM) and is considered one of the crucial carbon reservoirs in the world. Based on that, this study evaluated the molecular properties of humic (HA) and fulvic (FA) acid from Amazon soil, with and without Cu(II) ions, by Time-Resolved Laser Fluorescence Spectroscopy (TRLFS) and Fluorescence Spectroscopy (FS). Fluorescence excitation-emission matrix (EEM) was obtained by FS, and EEM spectra were treated by canonical polyadic/ parallel factor analysis (EEM-CP/PARAFAC). The results showed that the humification index (A465nm) determined by FS is directly dependent on fluorophores? CII/CI ratio in these soils with depth (r = 0.89), especially for HA samples in deep horizons, which demonstrated that the CII consists more complex and humified structure of the SOM. The lifetime decay showed the presence of static quenching in the humic fractions. From the lifetime data provided by TRLFS and the different correlations with carbon content and A465nm, it can be suggested that the fluorescence suppression modifies the molecular properties of the humic fractions with the addition of Cu(II) ions, such as altering the mobility and availability of the metal in the complexation reactions in these Amazonian Spodosols, mainly for the fulvic fraction.
653 $aAmazon soil
653 $aHumic fractions
653 $aHumification process
653 $aLifetime
653 $aMolecular changes
700 1 $aNICOLODELLI, G.
700 1 $aHAJJOUL, H.
700 1 $aMILORI, D. M. B. P.
700 1 $aMOUNIER, S.
773 $tApplied Geochemistry$gv. 147, a105486, 2022.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
22/07/2013 |
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Data da última atualização: |
30/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
CASTRO, R. S.; SILVA, P. S. L.; CARDOSO, M. J. |
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Afiliação: |
Renato S Castro, UFERSA; Paulo Sérgio L Silva, UFERSA; MILTON JOSE CARDOSO, CPAMN. |
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Título: |
Baby corn, green corn, and dry corn yield of corn cultivars. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
Horticultura Brasileira, Brasília, DF, v. 31, n. 1, p. 100-105, jan./mar. 2013. |
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ISSN: |
0102-0536 |
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Idioma: |
Inglês |
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Conteúdo: |
In corn, when the first female inflorescence is removed, the plant often produces new female inflorescences. This allows the first ear to be harvested as baby corn (BC) and the second as green corn (GC) or dry corn (DC), that is, mature corn. The flexibility provided by a variety of harvested products allows the grower to compete with better conditions in the markets. We evaluated BC, GC, and DC yields in corn cultivars AG 1051, AG 2060, and BRS 2020, after the first ear was harvested as BC. A random block design with ten replicates was utilized. The yields of MM, MV and MS were higher when these products were individually harvested than when they were harvested in combination with baby corn (BC + GC and BC + DC). Cultivar BRS 2020 was the best for producing BC exclusively, considering the number and weight of marketable unhusked ears and the number (NH) of marketable husked ears. Considering weight (WH) of BC marketable husked ears, cultivar AG 1051 was the best. Cultivars did not differ in baby corn yield when this product was harvested in combination with MS or MV, except with regard to NH and WH, with AG 1051 being superior. The cultivars did not differ between total number of ears and number of marketable unhusked green ears. However, cultivars AG 1051 and AG 2060 were the best with respect to marketable unhusked green ears and number and weight of marketable husked green ears. Cultivar AG 1051 was the best with regard to kernel yield. |
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Palavras-Chave: |
Grain; Green ears; Milho-verde; Minimilho; Prolificacy; Prolificidade. |
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Thesagro: |
Espiga; Rendimento; Zea mays. |
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Categoria do assunto: |
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F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/86511/1/HortBrasMiltonCardoso.pdf
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Marc: |
LEADER 02153naa a2200265 a 4500
001 1962560
005 2022-05-30
008 2013 bl uuuu u00u1 u #d
022 $a0102-0536
100 1 $aCASTRO, R. S.
245 $aBaby corn, green corn, and dry corn yield of corn cultivars.
260 $c2013
520 $aIn corn, when the first female inflorescence is removed, the plant often produces new female inflorescences. This allows the first ear to be harvested as baby corn (BC) and the second as green corn (GC) or dry corn (DC), that is, mature corn. The flexibility provided by a variety of harvested products allows the grower to compete with better conditions in the markets. We evaluated BC, GC, and DC yields in corn cultivars AG 1051, AG 2060, and BRS 2020, after the first ear was harvested as BC. A random block design with ten replicates was utilized. The yields of MM, MV and MS were higher when these products were individually harvested than when they were harvested in combination with baby corn (BC + GC and BC + DC). Cultivar BRS 2020 was the best for producing BC exclusively, considering the number and weight of marketable unhusked ears and the number (NH) of marketable husked ears. Considering weight (WH) of BC marketable husked ears, cultivar AG 1051 was the best. Cultivars did not differ in baby corn yield when this product was harvested in combination with MS or MV, except with regard to NH and WH, with AG 1051 being superior. The cultivars did not differ between total number of ears and number of marketable unhusked green ears. However, cultivars AG 1051 and AG 2060 were the best with respect to marketable unhusked green ears and number and weight of marketable husked green ears. Cultivar AG 1051 was the best with regard to kernel yield.
650 $aEspiga
650 $aRendimento
650 $aZea mays
653 $aGrain
653 $aGreen ears
653 $aMilho-verde
653 $aMinimilho
653 $aProlificacy
653 $aProlificidade
700 1 $aSILVA, P. S. L.
700 1 $aCARDOSO, M. J.
773 $tHorticultura Brasileira, Brasília, DF$gv. 31, n. 1, p. 100-105, jan./mar. 2013.
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