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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
16/11/2020 |
Data da última atualização: |
08/01/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SANTOS, U. J. dos; DEMATTÊ, J. A. de M.; MENEZES, R. S. C.; DOTTO, A. C.; GUIMARÃES, C. C. B.; ALVES, B. J. R.; PRIMO, D. C.; SAMPA, E. V. de S. B. |
Afiliação: |
Uemeson José dos Santos, UFPE; José Alexandre de Melo Demattê, Unesp - Piracicaba; Rômulo Simões Cezar Menezes, UFPE; André Carnieletto Dotto, UNESP - PIRACICABA; Clécia Cristina Barbosa Guimarães, Unesp - Piracicaba; BRUNO JOSE RODRIGUES ALVES, CNPAB; Dário Costa Primo, UFPE; Everardo Valadares de Sá Barretto Sampa, UFPE. |
Título: |
Predicting carbon and nitrogen by visible near-infrared (Vis-NIR) .and mid-infrared (MIR) spectroscopy in soils of Northeast Brazil |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Geoderma Regional, v. 23, e00333, December 2020. |
DOI: |
https://doi.org/10.1016/j.geodrs.2020.e00333 |
Idioma: |
Português |
Conteúdo: |
Determinations of soil carbon and nitrogen stocks are important to evaluate land fertility and agricultural potential and because of their influence on the global climate. Spectroscopic determinations are faster, cheaper and less pollutant than traditional methods. The potential use of spectroscopy in the visible (Vis), near infrared (NIR) and mid-infrared (MIR) regions and their combination to estimate total C and N concentrations were evaluated using seven different pre-processing and two regression models and comparing to the concentrations determined by dry combustion of 701 soil samples from different soil classes and land uses in Northeast Brazil. Better C and N concentration predictions were obtained with the MIR region than with the Vi -NIR region and no significant improvement occurred when the two spectra were combined. The support vector machine (SVM) and the partial least squares (PLSR) models had similar performances both for C and N. The multiplicative scatter correction pre-processing is recommended for C and the standard normal transformation technique for N. Equations to estimate soil C and N concentrations of the predominant soil classes in the region and of the set of all classes are provided. Their high accuracy confirm the potential of reflectance spectroscopy as a useful and rapid tool to quantify C and N concentrations in different tropical soils and under different land uses. |
Palavras-Chave: |
Chemometrics Spectral regions. |
Thesaurus Nal: |
Acrisols; Soil quality; Spectral analysis. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02266naa a2200265 a 4500 001 2126634 005 2021-01-08 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.geodrs.2020.e00333$2DOI 100 1 $aSANTOS, U. J. dos 245 $aPredicting carbon and nitrogen by visible near-infrared (Vis-NIR) .and mid-infrared (MIR) spectroscopy in soils of Northeast Brazil 260 $c2020 520 $aDeterminations of soil carbon and nitrogen stocks are important to evaluate land fertility and agricultural potential and because of their influence on the global climate. Spectroscopic determinations are faster, cheaper and less pollutant than traditional methods. The potential use of spectroscopy in the visible (Vis), near infrared (NIR) and mid-infrared (MIR) regions and their combination to estimate total C and N concentrations were evaluated using seven different pre-processing and two regression models and comparing to the concentrations determined by dry combustion of 701 soil samples from different soil classes and land uses in Northeast Brazil. Better C and N concentration predictions were obtained with the MIR region than with the Vi -NIR region and no significant improvement occurred when the two spectra were combined. The support vector machine (SVM) and the partial least squares (PLSR) models had similar performances both for C and N. The multiplicative scatter correction pre-processing is recommended for C and the standard normal transformation technique for N. Equations to estimate soil C and N concentrations of the predominant soil classes in the region and of the set of all classes are provided. Their high accuracy confirm the potential of reflectance spectroscopy as a useful and rapid tool to quantify C and N concentrations in different tropical soils and under different land uses. 650 $aAcrisols 650 $aSoil quality 650 $aSpectral analysis 653 $aChemometrics Spectral regions 700 1 $aDEMATTÊ, J. A. de M. 700 1 $aMENEZES, R. S. C. 700 1 $aDOTTO, A. C. 700 1 $aGUIMARÃES, C. C. B. 700 1 $aALVES, B. J. R. 700 1 $aPRIMO, D. C. 700 1 $aSAMPA, E. V. de S. B. 773 $tGeoderma Regional$gv. 23, e00333, December 2020.
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Registro Completo
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
04/08/2021 |
Data da última atualização: |
04/08/2021 |
Tipo da produção científica: |
Nota Técnica/Nota Científica |
Autoria: |
NAVA, D. E.; SAVARIS, M.; SILVEIRA NETO, S.; ZUCCHI, R. A. |
Afiliação: |
DORI EDSON NAVA, CPACT; MARCOANDRE SAVARIS, Escola Superior de Agricultura “Luiz de Queiroz”; SINVAL SILVEIRA NETO, Escola Superior de Agricultura “Luiz de Queiroz”; ROBERTO A. ZUCCHI, Escola Superior de Agricultura “Luiz de Queiroz”. |
Título: |
Outbreak of Lauritrioza alacris (Flor, 1861) (Hemiptera, Triozidae) in a commercial plantation of bay laurel (Laurus nobilis L., Lauraceae) in Brazil. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Entomological Communications, v. 3, ec03013, 2021. |
Páginas: |
3 p. |
ISSN: |
2675-1305 |
DOI: |
10.37486/2675-1305.ec03013 |
Idioma: |
Inglês |
Conteúdo: |
An attack of Lauritrioza alacris (Flor, 1861) (Hemiptera: Triozidae) was recorded in a commercial plantation of bay laurel (Laurus nobilis L., Lauraceae) in the municipality of Dois Lajeados, Rio Grande do Sul state (RS), Brazil. The immature triozids induced galls on the attacked leaves consisting of the thickened margins that became folded downward, forming an elongated tube-shaped roll that sheltered the immatures. All developmental stages (egg, immatures, and adults) of the psyllid were found on young leaves of bay laurel. Lauritrioza alacris is an introduced pest in Brazil that was detected in Pelotas, RS in 1949 and Rio de Janeiro, Rio de Janeiro state in 1953. Therefore, we are reporting the third record of L. alacris; however, it is the first documented information of an infestation in a commercial bay laurel plantations by L. alacris in Brazil. Information on taxonomy, biological aspects, distribution, and damage caused by the laurel psyllid is also provided. |
Palavras-Chave: |
Lauritrioza alacris. |
Thesagro: |
Laurus Nobilis; Louro. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/224824/1/Artigo-143-Article-Text-2724-3-10-20210409-3.pdf
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Marc: |
LEADER 01703naa a2200229 a 4500 001 2133237 005 2021-08-04 008 2021 bl uuuu u00u1 u #d 022 $a2675-1305 024 7 $a10.37486/2675-1305.ec03013$2DOI 100 1 $aNAVA, D. E. 245 $aOutbreak of Lauritrioza alacris (Flor, 1861) (Hemiptera, Triozidae) in a commercial plantation of bay laurel (Laurus nobilis L., Lauraceae) in Brazil.$h[electronic resource] 260 $c2021 300 $a3 p. 520 $aAn attack of Lauritrioza alacris (Flor, 1861) (Hemiptera: Triozidae) was recorded in a commercial plantation of bay laurel (Laurus nobilis L., Lauraceae) in the municipality of Dois Lajeados, Rio Grande do Sul state (RS), Brazil. The immature triozids induced galls on the attacked leaves consisting of the thickened margins that became folded downward, forming an elongated tube-shaped roll that sheltered the immatures. All developmental stages (egg, immatures, and adults) of the psyllid were found on young leaves of bay laurel. Lauritrioza alacris is an introduced pest in Brazil that was detected in Pelotas, RS in 1949 and Rio de Janeiro, Rio de Janeiro state in 1953. Therefore, we are reporting the third record of L. alacris; however, it is the first documented information of an infestation in a commercial bay laurel plantations by L. alacris in Brazil. Information on taxonomy, biological aspects, distribution, and damage caused by the laurel psyllid is also provided. 650 $aLaurus Nobilis 650 $aLouro 653 $aLauritrioza alacris 700 1 $aSAVARIS, M. 700 1 $aSILVEIRA NETO, S. 700 1 $aZUCCHI, R. A. 773 $tEntomological Communications$gv. 3, ec03013, 2021.
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