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| 3. |  | OLIVEIRA, J. F. de; PORRO, R. Análise do desempenho de sabiazeiros cultivados em babaçuais em sistemas agroflorestais agroextrativistas no Médio Mearim, Maranhão. In: SEMINÁRIO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA AMAZÔNIA ORIENTAL, 25., 2022, Belém, PA. Anais... Belém, PA: Embrapa Amazônia Oriental, 2023. p. 46-47. (Embrapa Amazônia Oriental. Eventos técnicos & científicos, 1).| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 14. | | SOARES, D. M.; RANGEL, P. H. N.; DINIZ, J. de A.; OLIVEIRA, J. F. de. Análise prospectiva dos produtores de arroz irrigado em tabuleiro de encosta de Caldas Novas - GO. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 4.; REUNIÃO DA CULTURA DO ARROZ IRRIGADO, 26., 2005, Santa Maria, RS. Anais... Santa Maria, RS: Orium, 2005. v. 2. p. 421-422.| Biblioteca(s): Embrapa Arroz e Feijão. |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
03/02/2016 |
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Data da última atualização: |
04/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
|
Autoria: |
OLIVEIRA, J. F. de; BROSSARD, M.; CORAZZA, E. J.; MARCHAO, R. L.; VENDRAME, P. R. S.; BRITO, O. R.; GUIMARAES, M. de F. |
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Afiliação: |
JOSÉ FRANCIRLEI DE OLIVEIRA, UEL; MICHEL BROSSARD, UEL; EDEMAR JOAQUIM CORAZZA, SCT; ROBELIO LEANDRO MARCHAO, CPAC; PEDRO RODOLFO SIQUEIRA VENDRAME, UEL; OSMAR RODRIGUES BRITO, UEL; MARIA DE FÁTIMA GUIMARÃES, UEL. |
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Título: |
Vis-NIR spectrometry, soil phosphate extraction methods and interactions of soil attributes. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Química Nova, São Paulo, v. 38, n. 3, p. 342-350, Mar. 2015 |
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ISSN: |
0100-4042 |
|
DOI: |
http://dx.doi.org/10.5935/0100-4042.20150009 |
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Idioma: |
Inglês |
|
Conteúdo: |
Abstract: The objective of this study was to evaluate the relationships between the spectra in the Vis-NIR range and the soil P concentrations obtained from the P-M and P-rem extraction methods as well as the effects of these relationships on the construction of models predicting P concentration in Oxisols. Soil samples' spectra and their P-M and P-rem extraction solutions were determined for the Vis-NIR region between 400 and 2500 nm. Mineralogy and/ or organic matter content act as primary attributes allowing correlation of these soil phosphorus fractions with the spectra, mainly at wavelengths between 450-550, 900-1100 nm, near 1400 nm and between 2200-2300 nm. However, the regression models generated were not suitable for quantitative phosphate analysis. Solubilization of organic matter and reactions during the P-M extraction process hindered correlations between the spectra and these P soil fractions. For P-rem,, the presence of Ca in the extractant and preferential adsorption by gibbsite and iron oxides, particularly goethite, obscured correlations with the spectra. |
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Palavras-Chave: |
Espectroscopia do infravermelho próximo (NIR); Espectroscopia na região do visível (VIS); Espectroscopia VIS/NIR. |
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Thesagro: |
Análise do solo; Espectrometria; Extração; Fosfato; Latossolo. |
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Thesaurus NAL: |
Extraction; Oxisols; Phosphates; Soil analysis; Spectroscopy. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/138369/1/35149.pdf
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Marc: |
LEADER 02193naa a2200373 a 4500
001 2036034
005 2016-03-04
008 2015 bl uuuu u00u1 u #d
022 $a0100-4042
024 7 $ahttp://dx.doi.org/10.5935/0100-4042.20150009$2DOI
100 1 $aOLIVEIRA, J. F. de
245 $aVis-NIR spectrometry, soil phosphate extraction methods and interactions of soil attributes.
260 $c2015
520 $aAbstract: The objective of this study was to evaluate the relationships between the spectra in the Vis-NIR range and the soil P concentrations obtained from the P-M and P-rem extraction methods as well as the effects of these relationships on the construction of models predicting P concentration in Oxisols. Soil samples' spectra and their P-M and P-rem extraction solutions were determined for the Vis-NIR region between 400 and 2500 nm. Mineralogy and/ or organic matter content act as primary attributes allowing correlation of these soil phosphorus fractions with the spectra, mainly at wavelengths between 450-550, 900-1100 nm, near 1400 nm and between 2200-2300 nm. However, the regression models generated were not suitable for quantitative phosphate analysis. Solubilization of organic matter and reactions during the P-M extraction process hindered correlations between the spectra and these P soil fractions. For P-rem,, the presence of Ca in the extractant and preferential adsorption by gibbsite and iron oxides, particularly goethite, obscured correlations with the spectra.
650 $aExtraction
650 $aOxisols
650 $aPhosphates
650 $aSoil analysis
650 $aSpectroscopy
650 $aAnálise do solo
650 $aEspectrometria
650 $aExtração
650 $aFosfato
650 $aLatossolo
653 $aEspectroscopia do infravermelho próximo (NIR)
653 $aEspectroscopia na região do visível (VIS)
653 $aEspectroscopia VIS/NIR
700 1 $aBROSSARD, M.
700 1 $aCORAZZA, E. J.
700 1 $aMARCHAO, R. L.
700 1 $aVENDRAME, P. R. S.
700 1 $aBRITO, O. R.
700 1 $aGUIMARAES, M. de F.
773 $tQuímica Nova, São Paulo$gv. 38, n. 3, p. 342-350, Mar. 2015
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