Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1036034
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dc.contributor.authorOLIVEIRA, J. F. dept_BR
dc.contributor.authorBROSSARD, M.pt_BR
dc.contributor.authorCORAZZA, E. J.pt_BR
dc.contributor.authorMARCHAO, R. L.pt_BR
dc.contributor.authorVENDRAME, P. R. S.pt_BR
dc.contributor.authorBRITO, O. R.pt_BR
dc.contributor.authorGUIMARAES, M. de F.pt_BR
dc.date.accessioned2016-02-03T11:11:11Zpt_BR
dc.date.available2016-02-03T11:11:11Zpt_BR
dc.date.created2016-02-03pt_BR
dc.date.issued2015pt_BR
dc.identifier.citationQuímica Nova, São Paulo, v. 38, n. 3, p. 342-350, Mar. 2015pt_BR
dc.identifier.issn0100-4042pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1036034pt_BR
dc.descriptionAbstract: 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.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectEspectroscopia VIS/NIRpt_BR
dc.subjectEspectroscopia na região do visível (VIS)pt_BR
dc.subjectEspectroscopia do infravermelho próximo (NIR)pt_BR
dc.titleVis-NIR spectrometry, soil phosphate extraction methods and interactions of soil attributes.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-03-04T11:11:11Zpt_BR
dc.subject.thesagroFosfatopt_BR
dc.subject.thesagroExtraçãopt_BR
dc.subject.thesagroLatossolopt_BR
dc.subject.thesagroAnálise do solopt_BR
dc.subject.thesagroEspectrometriapt_BR
dc.subject.nalthesaurusPhosphatespt_BR
dc.subject.nalthesaurusExtractionpt_BR
dc.subject.nalthesaurusOxisolspt_BR
dc.subject.nalthesaurusSoil analysispt_BR
dc.subject.nalthesaurusSpectroscopypt_BR
riaa.ainfo.id1036034pt_BR
riaa.ainfo.lastupdate2016-03-04pt_BR
dc.identifier.doihttp://dx.doi.org/10.5935/0100-4042.20150009pt_BR
dc.contributor.institutionJOSÉ 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.pt_BR
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