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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Roraima. |
Data corrente: |
08/02/2017 |
Data da última atualização: |
01/09/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MICHEL, D. C.; PASSOS, S. R.; ARAUJO, J. L. S. de; BARAÚNA, A. C.; SILVA, K. da; LEME, M. M. P.; MELO, I. S. de; DE MEYER, S. E.; O’HARAM G.; ZILLI, J. E. |
Afiliação: |
DANIELE C. MICHEL, UFRRJ; SAMUEL R. PASSOS, BOLSISTA DA EMBRAPA AGROBIOLOGIA; JEAN LUIZ SIMOES DE ARAUJO, CNPAB; ALEXANDRE C. BARAÚNA, UFRRH; KRISLE DA SILVA, CPAF-Roraima; MARCIA MARIA PARMA LEME, CNPMA; ITAMAR SOARES DE MELO, CNPMA; SOFIE E. DE MEYER, CENTRE FOR RHIZOBIUM STUDIES, MURDOCH UNIVERSITY; GRAHAM O’HARA, CENTRE FOR RHIZOBIUM STUDIES, MURDOCH UNIVERSITY; JERRI EDSON ZILLI, CNPAB. |
Título: |
Bradyrhizobium centrolobii and Bradyrhizobium macuxiense sp. nov. isolated from Centrolobium paraense grown in soil of Amazonia, Brazil |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
Archives of Microbiology, v. 199, n. 5, p. 657-664, 2017. |
ISSN: |
0302-8933 |
DOI: |
10.1007/s00203-017-1340-y |
Idioma: |
Inglês |
Palavras-Chave: |
Average nucleotide identity; Biological nitrogen fixation; Chemotaxonomic data; Leguminosae Papilionoideae; Phylogenetic analyses; Symbiosis genes. |
Thesaurus Nal: |
Nodulation. |
Categoria do assunto: |
V Taxonomia de Organismos |
Marc: |
LEADER 01016naa a2200325 a 4500 001 2063094 005 2023-09-01 008 2017 bl uuuu u00u1 u #d 022 $a0302-8933 024 7 $a10.1007/s00203-017-1340-y$2DOI 100 1 $aMICHEL, D. C. 245 $aBradyrhizobium centrolobii and Bradyrhizobium macuxiense sp. nov. isolated from Centrolobium paraense grown in soil of Amazonia, Brazil 260 $c2017 650 $aNodulation 653 $aAverage nucleotide identity 653 $aBiological nitrogen fixation 653 $aChemotaxonomic data 653 $aLeguminosae Papilionoideae 653 $aPhylogenetic analyses 653 $aSymbiosis genes 700 1 $aPASSOS, S. R. 700 1 $aARAUJO, J. L. S. de 700 1 $aBARAÚNA, A. C. 700 1 $aSILVA, K. da 700 1 $aLEME, M. M. P. 700 1 $aMELO, I. S. de 700 1 $aDE MEYER, S. E. 700 1 $aO’HARAM G. 700 1 $aZILLI, J. E. 773 $tArchives of Microbiology$gv. 199, n. 5, p. 657-664, 2017.
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Embrapa Agrobiologia (CNPAB) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Cerrados. Para informações adicionais entre em contato com cpac.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Cerrados. |
Data corrente: |
28/09/2022 |
Data da última atualização: |
28/09/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
OLIVEIRA, J. F. de; BROSSARD, M.; CORAZZA, E. J.; GUIMARAES, M. de F.; MARCHAO, R. L. |
Afiliação: |
JOSE FRANCIRLEI DE OLIVEIRA; MICHEL BROSSARD; EDEMAR JOAQUIM CORAZZA, SUCOM; MARIA DE FATIMA GUIMARAES; ROBELIO LEANDRO MARCHAO, CPAC. |
Título: |
Field-scale spatial correlation between soil and Vis-NIR spectra in the Cerrado biome of Central Brazil. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Geoderma Regional, v. 30, e00532, 2022. |
Páginas: |
13 p. |
Idioma: |
Inglês |
Conteúdo: |
Visible and near-infrared (Vis-NIR) spectroscopy is a tool to determine soil spatial variability and has been used to map soils and their properties. Considering that physical, chemical, mineralogical, and morphological soil properties can affect the intensity and the depth of the spectral reflectance band in the Vis-NIR region, the objectives of this work were to: (i) evaluate the potential of the reflectance inflection difference (RID) to discriminate soils; and (ii) verify potential spatial correlations of the RID with soil properties, compared with the full spectra, in order to build thematic maps at a field scale. In a farm of 375 ha, 78 soil samples from the 0.87?0.92-m depth were collected in a regular grid of 200 m, with a focus on the soil diagnostic horizon (Bw horizon). The sampled soils were a Latossolo Vermelho-Amarelo ́ acrico (Haplic Ferralsol) and a Latossolo Ver- melho distrofico ́ (Rhodic Ferralsol). Twenty-two physical, chemical, mineralogical, and morphological soil properties were determined, and the Vis-NIR spectra between 400 and 2500 nm were measured. Considering the presence of an inflection band and its relationship with soil properties, the spectral bands used to calculate the RID were between (base 1/base 2): 400?510, 730?930, 1290?1450, 1800?1950, 2000?2218, and 2218?2290 nm. The RID failed to map the spatial variability of soil properties, with a Kappa index of 39%; therefore, it is not a good parameter for building thematic maps of soil parameters. In addition, the complete spectrum (mainly in 400?510, 730?930, 1290?1450, 1800?1950, 2000?2218, and 2218?2290 nm) was better spatially correlated with soil properties than the decomposition of the spectrum by the RID. Soil classification and level of dis- cretization as affected by spectral variability were also discussed here. Three soil groups were discriminated mainly by the Ki and Kr indexes and clay content. Moreover, the variability of the spectra was conditioned by the spatial variability of the mentioned variables. The clay content for soils with a discrepant particle size (group 1 compared with groups 2 and 3) and the Ki and Kr indexes for soils with a homogeneous particle size (between groups 2 and 3), associated with the full Vis-NIR spectral analysis, allowed building thematic maps with a good precision, without the need of mathematical models; this was possible by the modification of the reflectance intensity and the size of the concavity of the spectral band. MenosVisible and near-infrared (Vis-NIR) spectroscopy is a tool to determine soil spatial variability and has been used to map soils and their properties. Considering that physical, chemical, mineralogical, and morphological soil properties can affect the intensity and the depth of the spectral reflectance band in the Vis-NIR region, the objectives of this work were to: (i) evaluate the potential of the reflectance inflection difference (RID) to discriminate soils; and (ii) verify potential spatial correlations of the RID with soil properties, compared with the full spectra, in order to build thematic maps at a field scale. In a farm of 375 ha, 78 soil samples from the 0.87?0.92-m depth were collected in a regular grid of 200 m, with a focus on the soil diagnostic horizon (Bw horizon). The sampled soils were a Latossolo Vermelho-Amarelo ́ acrico (Haplic Ferralsol) and a Latossolo Ver- melho distrofico ́ (Rhodic Ferralsol). Twenty-two physical, chemical, mineralogical, and morphological soil properties were determined, and the Vis-NIR spectra between 400 and 2500 nm were measured. Considering the presence of an inflection band and its relationship with soil properties, the spectral bands used to calculate the RID were between (base 1/base 2): 400?510, 730?930, 1290?1450, 1800?1950, 2000?2218, and 2218?2290 nm. The RID failed to map the spatial variability of soil properties, with a Kappa index of 39%; therefore, it is not a good parameter for building thematic maps of so... Mostrar Tudo |
Palavras-Chave: |
Diferença de inflexão de refletância; Índices Ki e Kr; Variabilidade espacial do solo. |
Thesagro: |
Espectrometria. |
Categoria do assunto: |
-- |
Marc: |
LEADER 03213naa a2200229 a 4500 001 2146935 005 2022-09-28 008 2022 bl uuuu u00u1 u #d 100 1 $aOLIVEIRA, J. F. de 245 $aField-scale spatial correlation between soil and Vis-NIR spectra in the Cerrado biome of Central Brazil.$h[electronic resource] 260 $c2022 300 $a13 p. 520 $aVisible and near-infrared (Vis-NIR) spectroscopy is a tool to determine soil spatial variability and has been used to map soils and their properties. Considering that physical, chemical, mineralogical, and morphological soil properties can affect the intensity and the depth of the spectral reflectance band in the Vis-NIR region, the objectives of this work were to: (i) evaluate the potential of the reflectance inflection difference (RID) to discriminate soils; and (ii) verify potential spatial correlations of the RID with soil properties, compared with the full spectra, in order to build thematic maps at a field scale. In a farm of 375 ha, 78 soil samples from the 0.87?0.92-m depth were collected in a regular grid of 200 m, with a focus on the soil diagnostic horizon (Bw horizon). The sampled soils were a Latossolo Vermelho-Amarelo ́ acrico (Haplic Ferralsol) and a Latossolo Ver- melho distrofico ́ (Rhodic Ferralsol). Twenty-two physical, chemical, mineralogical, and morphological soil properties were determined, and the Vis-NIR spectra between 400 and 2500 nm were measured. Considering the presence of an inflection band and its relationship with soil properties, the spectral bands used to calculate the RID were between (base 1/base 2): 400?510, 730?930, 1290?1450, 1800?1950, 2000?2218, and 2218?2290 nm. The RID failed to map the spatial variability of soil properties, with a Kappa index of 39%; therefore, it is not a good parameter for building thematic maps of soil parameters. In addition, the complete spectrum (mainly in 400?510, 730?930, 1290?1450, 1800?1950, 2000?2218, and 2218?2290 nm) was better spatially correlated with soil properties than the decomposition of the spectrum by the RID. Soil classification and level of dis- cretization as affected by spectral variability were also discussed here. Three soil groups were discriminated mainly by the Ki and Kr indexes and clay content. Moreover, the variability of the spectra was conditioned by the spatial variability of the mentioned variables. The clay content for soils with a discrepant particle size (group 1 compared with groups 2 and 3) and the Ki and Kr indexes for soils with a homogeneous particle size (between groups 2 and 3), associated with the full Vis-NIR spectral analysis, allowed building thematic maps with a good precision, without the need of mathematical models; this was possible by the modification of the reflectance intensity and the size of the concavity of the spectral band. 650 $aEspectrometria 653 $aDiferença de inflexão de refletância 653 $aÍndices Ki e Kr 653 $aVariabilidade espacial do solo 700 1 $aBROSSARD, M. 700 1 $aCORAZZA, E. J. 700 1 $aGUIMARAES, M. de F. 700 1 $aMARCHAO, R. L. 773 $tGeoderma Regional$gv. 30, e00532, 2022.
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