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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
31/08/2018 |
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Data da última atualização: |
10/11/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BELTRAME, K. K.; SOUZA, A. M. de; COELHO, M. R.; WINKLER, T. C. B.; SOUZA, W. E.; VALDERRAMA, P. |
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Afiliação: |
KARLA K. BELTRAME, UTFPR; ANDRE MARCELO DE SOUZA, CNPS; MAURICIO RIZZATO COELHO, CNPS; THAYANE C. B. WINKLER; WYRLLEN E. SOUZA, UTFPR; PATRÍCIA VALDERRAMA, UTFPR. |
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Título: |
Soil organic carbon determination using NIRS: evaluation of dichromate oxidation and dry combustion analysis as reference methods in multivariate calibration. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Journal of the Brazilian Chemical Society, v. 27, n. 9, p. 1527-1532, 2016. |
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DOI: |
http://dx.doi.org/10.5935/0103-5053.20160031 |
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Idioma: |
Inglês |
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Conteúdo: |
Dichromate oxidation and dry combustion analysis were evaluated as reference methods to determine organic carbon in Brazilian soils using near infrared spectroscopy (NIRS) as an alternative. The main objective of this study was to evaluate which of the reference methods could provide a calibration model with higher predictive ability. A total of 161 soil samples obtained from horizons in full profiles (Parque Estadual da Mata Seca, Minas Gerais State, Brazil) were used. Models were mean centered and built from partial least squares. The dichromate oxidation method presented a lower accuracy when compared to dry combustion analysis as reference for NIRS. Figures of merit such as sensitivity, analytical sensitivity, detection and quantification limits, adjust and linearity presented results very similar. A paired t-test was applied to the figures of merit results and with 95% confidence did not show significant differences between the two methods used as reference for NIRS. The non-parametric Mann Whitney test showed that the samples provided with the partial least squares (PLS) model when the reference method was the dichromate oxidation or dry combustion analysis come from the same population, indicating that the reference methods employed for multivariate calibration from NIRS provide the same results practically. |
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Thesagro: |
Análise do Solo; Carbono. |
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Thesaurus Nal: |
Soil analysis; Soil organic carbon. |
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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/182275/1/2016-175.pdf
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Marc: |
LEADER 02163naa a2200241 a 4500
001 2094899
005 2021-11-10
008 2016 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.5935/0103-5053.20160031$2DOI
100 1 $aBELTRAME, K. K.
245 $aSoil organic carbon determination using NIRS$bevaluation of dichromate oxidation and dry combustion analysis as reference methods in multivariate calibration.$h[electronic resource]
260 $c2016
520 $aDichromate oxidation and dry combustion analysis were evaluated as reference methods to determine organic carbon in Brazilian soils using near infrared spectroscopy (NIRS) as an alternative. The main objective of this study was to evaluate which of the reference methods could provide a calibration model with higher predictive ability. A total of 161 soil samples obtained from horizons in full profiles (Parque Estadual da Mata Seca, Minas Gerais State, Brazil) were used. Models were mean centered and built from partial least squares. The dichromate oxidation method presented a lower accuracy when compared to dry combustion analysis as reference for NIRS. Figures of merit such as sensitivity, analytical sensitivity, detection and quantification limits, adjust and linearity presented results very similar. A paired t-test was applied to the figures of merit results and with 95% confidence did not show significant differences between the two methods used as reference for NIRS. The non-parametric Mann Whitney test showed that the samples provided with the partial least squares (PLS) model when the reference method was the dichromate oxidation or dry combustion analysis come from the same population, indicating that the reference methods employed for multivariate calibration from NIRS provide the same results practically.
650 $aSoil analysis
650 $aSoil organic carbon
650 $aAnálise do Solo
650 $aCarbono
700 1 $aSOUZA, A. M. de
700 1 $aCOELHO, M. R.
700 1 $aWINKLER, T. C. B.
700 1 $aSOUZA, W. E.
700 1 $aVALDERRAMA, P.
773 $tJournal of the Brazilian Chemical Society$gv. 27, n. 9, p. 1527-1532, 2016.
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Registro original: |
Embrapa Solos (CNPS) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
03/04/2017 |
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Data da última atualização: |
16/05/2017 |
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Autoria: |
SOARES, D. J.; OLIVEIRA, W. S. de; UZUELE, E. L.; CARVALHO, S. J. P. de; OVEJERO, R. F. L.; CHRISTOFFOLETI, P. J. |
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Afiliação: |
DANIEL JORGE SOARES, Monsanto do Brasil; WLADECIR SALLES DE OLIVEIRA, MONSANTO DO BRASIL; ELVIO LORENÇATO UZUELE, MONSANTO DO BRASIL; SAUL JORGE PINTO DE CARVALHO, Instituto Federal do Sul de Minas Gerais, Campus Machado; RAMIRO FERNANDO LOPEZ OVEJERO, MONSANTO DO BRASIL; PEDRO JACOB CHRISTOFFOLETI, USP/ESALQ. |
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Título: |
Growth and development of Conyza bonariensis based on days or thermal units. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, Brasília, DF, v. 52, n. 1, p. 45-53, jan. 2017. |
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Idioma: |
Inglês |
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Notas: |
Título em português: Crescimento e desenvolvimento de Conyza bonariensis com base em dias ou unidades térmicas. |
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Conteúdo: |
The objective of this work was to evaluate the growth and development of a glyphosateresistant population of Conyza bonariensis in different sowing dates (autumn, winter, and spring) and in two agricultural environments, based on days or thermal units. Five experiments were performed in two agricultural environments in Brazil: two in the municipality of Não-Me-Toque, in the state of Rio Grande do Sul ? with sowings in July and September 2011; and three in the municipality of Santa Cruz das Palmeiras, in the state of São Paulo ? with sowings in April, July, and September 2011. In each trial, ten evaluations of the phenological development and total dry mass of C. bonariensis were performed, fitting these variables to a unit of time in days or growing degree days. The phenological development of C. bonariensis had the best adjustment at the base temperature of 8.4oC, and was affected by sowing date and agricultural environment. In autumn, with decreasing temperature and photoperiod, plants are still able to accumulate dry mass, but without floral induction. In spring, with increasing temperature and photoperiod, dry mass accumulation is lower, but phenological development is faster, with significant floral induction. |
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Palavras-Chave: |
Biologia de planta daninha; Buva; Dry mass; Grau-dia acumulado; Growing degree days; Hairy fleabane; Massa de matéria seca; Modelagem. |
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Thesagro: |
Fenologia. |
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Thesaurus NAL: |
Models; Phenology; Weed biology. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/158520/1/Growth-and-development-of-Conyza.pdf
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Marc: |
LEADER 02285naa a2200337 a 4500
001 2068015
005 2017-05-16
008 2017 bl uuuu u00u1 u #d
100 1 $aSOARES, D. J.
245 $aGrowth and development of Conyza bonariensis based on days or thermal units.
260 $c2017
500 $aTítulo em português: Crescimento e desenvolvimento de Conyza bonariensis com base em dias ou unidades térmicas.
520 $aThe objective of this work was to evaluate the growth and development of a glyphosateresistant population of Conyza bonariensis in different sowing dates (autumn, winter, and spring) and in two agricultural environments, based on days or thermal units. Five experiments were performed in two agricultural environments in Brazil: two in the municipality of Não-Me-Toque, in the state of Rio Grande do Sul ? with sowings in July and September 2011; and three in the municipality of Santa Cruz das Palmeiras, in the state of São Paulo ? with sowings in April, July, and September 2011. In each trial, ten evaluations of the phenological development and total dry mass of C. bonariensis were performed, fitting these variables to a unit of time in days or growing degree days. The phenological development of C. bonariensis had the best adjustment at the base temperature of 8.4oC, and was affected by sowing date and agricultural environment. In autumn, with decreasing temperature and photoperiod, plants are still able to accumulate dry mass, but without floral induction. In spring, with increasing temperature and photoperiod, dry mass accumulation is lower, but phenological development is faster, with significant floral induction.
650 $aModels
650 $aPhenology
650 $aWeed biology
650 $aFenologia
653 $aBiologia de planta daninha
653 $aBuva
653 $aDry mass
653 $aGrau-dia acumulado
653 $aGrowing degree days
653 $aHairy fleabane
653 $aMassa de matéria seca
653 $aModelagem
700 1 $aOLIVEIRA, W. S. de
700 1 $aUZUELE, E. L.
700 1 $aCARVALHO, S. J. P. de
700 1 $aOVEJERO, R. F. L.
700 1 $aCHRISTOFFOLETI, P. J.
773 $tPesquisa Agropecuária Brasileira, Brasília, DF$gv. 52, n. 1, p. 45-53, jan. 2017.
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Embrapa Unidades Centrais (AI-SEDE) |
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