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.descriptionThe 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.doihttps://doi.org/10.5935/0100-4042.20150009pt_BR
dc.contributor.institutionJOSÉ FRANCIRLEI DE OLIVEIRA, UNIVERSIDADE ESTADUAL DE LONDRINApt_BR
dc.contributor.institutionMICHEL BROSSARD, UNIVERSIDADE ESTADUAL DE LONDRINAeng
dc.contributor.institutionEDEMAR JOAQUIM CORAZZA, SCTeng
dc.contributor.institutionROBELIO LEANDRO MARCHAO, CPACeng
dc.contributor.institutionPEDRO RODOLFO SIQUEIRA VENDRAME, UNIVERSIDADE ESTADUAL DE LONDRINAeng
dc.contributor.institutionOSMAR RODRIGUES BRITO, UNIVERSIDADE ESTADUAL DE LONDRINAeng
dc.contributor.institutionMARIA DE FÁTIMA GUIMARÃES, UNIVERSIDADE ESTADUAL DE LONDRINA.eng
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