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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
15/08/2019 |
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Data da última atualização: |
08/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SANTANA, F. B. de; GIUSEPPE, L. O. de; SOUZA, A. M. de; POPPI, R. J. |
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Afiliação: |
FELIPE B. DE SANTANA, UNICAMP; LARISSA O. DE GIUSEPPE, UNICAMP; ANDRE MARCELO DE SOUZA, CNPS; RONEI J. POPPI, UNICAMP. |
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Título: |
Removing the moisture effect in soil organic matter determination using NIR spectroscopy and PLSR with external parameter orthogonalization. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Microchemical Journal, v. 145, p. 1094-1101, Mar. 2019. |
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DOI: |
10.1016/j.microc.2018.12.027 |
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Idioma: |
Inglês |
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Conteúdo: |
Near-infrared spectroscopy (NIR) is one of the most promising alternative technique for soil analysis in routine laboratories, which can provide faster and cheaper determinations of some soil parameters, including soil organic matter (SOM) content. However, NIR spectroscopy is quite sensitive to external environmental conditions, such as soil moisture, drastically reducing the accuracy of the methodology. In this study we used the external parameter orthogonalization (EPO) to minimize the moisture effect on soil spectra, making possible to apply the model developed with dry samples in moist ones. It was used 163 soil samples collected from several regions of Brazil, of these 103 dry samples were used to build the calibration model and the remaining 60 samples were moisturized at five different levels (5-35% w/w) to build the EPO model and to validate the methodology. The results obtained by EPO model (1.85 g/dm3, 0.86 and 2.02 for RMSEP, R2 val, and RPDval, respectively) showed that the method was able to remove the effect of moisture in the NIR spectra, with accuracy values statistically equivalent for dry and moist soil samples. |
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Thesagro: |
Espectrometria; Matéria Orgânica; Raio Infravermelho; Solo. |
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Thesaurus Nal: |
Near-infrared spectroscopy; Organic matter; Soil. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 01957naa a2200253 a 4500
001 2111374
005 2019-11-08
008 2019 bl uuuu u00u1 u #d
024 7 $a10.1016/j.microc.2018.12.027$2DOI
100 1 $aSANTANA, F. B. de
245 $aRemoving the moisture effect in soil organic matter determination using NIR spectroscopy and PLSR with external parameter orthogonalization.$h[electronic resource]
260 $c2019
520 $aNear-infrared spectroscopy (NIR) is one of the most promising alternative technique for soil analysis in routine laboratories, which can provide faster and cheaper determinations of some soil parameters, including soil organic matter (SOM) content. However, NIR spectroscopy is quite sensitive to external environmental conditions, such as soil moisture, drastically reducing the accuracy of the methodology. In this study we used the external parameter orthogonalization (EPO) to minimize the moisture effect on soil spectra, making possible to apply the model developed with dry samples in moist ones. It was used 163 soil samples collected from several regions of Brazil, of these 103 dry samples were used to build the calibration model and the remaining 60 samples were moisturized at five different levels (5-35% w/w) to build the EPO model and to validate the methodology. The results obtained by EPO model (1.85 g/dm3, 0.86 and 2.02 for RMSEP, R2 val, and RPDval, respectively) showed that the method was able to remove the effect of moisture in the NIR spectra, with accuracy values statistically equivalent for dry and moist soil samples.
650 $aNear-infrared spectroscopy
650 $aOrganic matter
650 $aSoil
650 $aEspectrometria
650 $aMatéria Orgânica
650 $aRaio Infravermelho
650 $aSolo
700 1 $aGIUSEPPE, L. O. de
700 1 $aSOUZA, A. M. de
700 1 $aPOPPI, R. J.
773 $tMicrochemical Journal$gv. 145, p. 1094-1101, Mar. 2019.
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| 4. |  | YOKOMIZO, G. K. I. Aspectos do melhoramento genético da bananeira. In: DIAS, J. do S. A.; BARRETO, M. C. (Ed.). Aspectos agronômicos, fitopatológicos e socioeconômicos da sigatoka-negra na cultura da bananeira no Estado do Amapá Macapá: Embrapa Amapá, 2011. Cap. 3, p. 22-40. 1 CD-ROM.| Tipo: Capítulo em Livro Técnico-Científico |
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