|
|
Registro Completo |
Biblioteca(s): |
Embrapa Agricultura Digital. |
Data corrente: |
02/04/2018 |
Data da última atualização: |
21/01/2020 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
SANTOS C. S. dos; MAURI, J.; REZENDE, T. T.; SOUZA, A. C. de; MATOS, N. M. S. de; BRANDÃO, I. R.; MENDES, A. N. G.; VEIGA, A. D.; RODRIGUES, G. C.; BARTHOLO, G. F.; CARVALHO, M. A. de F. |
Afiliação: |
Ufla; Ufla; ADRIANO DELLY VEIGA, CPAC; GUSTAVO COSTA RODRIGUES, CNPTIA; GABRIEL FERREIRA BARTHOLO, SAPC; MILENE ALVES DE FIGUEIREDO CARVALHO, SAPC. |
Título: |
Eficiência do uso da água de genótipos de Coffeaarabica em condições de Cerrado do Planalto Central do Brasil. |
Ano de publicação: |
2017 |
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 43., 2017, Poços de Caldas. Novas tecnologias para um bom café produzir. Brasília, DF: Embrapa Café, 2017. |
ISSN: |
2176-3429 |
Idioma: |
Português |
Notas: |
Na publicação: MAF Carvalho. |
Conteúdo: |
As plantas podem se adaptar ao ambiente de cultivo por meio de mecanismos fisiológicos, como o metabolismo da água (MA et al., 2004). Maior eficiência no uso da água indica que a planta reduz a transpiração ao mesmo tempo em que absorve CO2 necessário para fotossíntese (SHIMAZAKI et al., 2007). Neste sentido, o presente trabalho objetivou caracterizar a eficiência do uso da água de genótipos de Coffeaarabica em condições de Cerrado do Planalto Central do Brasil. |
Thesagro: |
Café; Coffea arabica; Irrigação por pivo central. |
Thesaurus Nal: |
Irrigation. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01500nam a2200301 a 4500 001 2090058 005 2020-01-21 008 2017 bl uuuu u01u1 u #d 022 $a2176-3429 100 1 $aSANTOS C. S. dos 245 $aEficiência do uso da água de genótipos de Coffeaarabica em condições de Cerrado do Planalto Central do Brasil.$h[electronic resource] 260 $aIn: CONGRESSO BRASILEIRO DE PESQUISAS CAFEEIRAS, 43., 2017, Poços de Caldas. Novas tecnologias para um bom café produzir. Brasília, DF: Embrapa Café$c2017 500 $aNa publicação: MAF Carvalho. 520 $aAs plantas podem se adaptar ao ambiente de cultivo por meio de mecanismos fisiológicos, como o metabolismo da água (MA et al., 2004). Maior eficiência no uso da água indica que a planta reduz a transpiração ao mesmo tempo em que absorve CO2 necessário para fotossíntese (SHIMAZAKI et al., 2007). Neste sentido, o presente trabalho objetivou caracterizar a eficiência do uso da água de genótipos de Coffeaarabica em condições de Cerrado do Planalto Central do Brasil. 650 $aIrrigation 650 $aCafé 650 $aCoffea arabica 650 $aIrrigação por pivo central 700 1 $aMAURI, J. 700 1 $aREZENDE, T. T. 700 1 $aSOUZA, A. C. de 700 1 $aMATOS, N. M. S. de 700 1 $aBRANDÃO, I. R. 700 1 $aMENDES, A. N. G. 700 1 $aVEIGA, A. D. 700 1 $aRODRIGUES, G. C. 700 1 $aBARTHOLO, G. F. 700 1 $aCARVALHO, M. A. de F.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Uva e Vinho. Para informações adicionais entre em contato com cnpuv.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Uva e Vinho. |
Data corrente: |
03/03/2022 |
Data da última atualização: |
24/08/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
SILVA-SANGO, D. V. da; HORST, T. Z.; MOURA-BUENO, J. M.; DALMOLIN, R. S. D.; SEBEM, E.; GEBLER, L.; SANTOS, M. da S. |
Afiliação: |
DANIELY VAZ DA SILVA-SANGO, University Federal of Santa Maria (UFSM); TACIARA ZBOROWSKI HORST, University Federal of Santa Maria (UFSM); JEAN MICHEL MOURA-BUENO, University Federal of Santa Maria (UFSM); RICARDO SIMÃO DINIZ DALMOLIN, University Federal of Santa Maria (UFSM); ELÓDIO SEBEM, University Federal of Santa Maria (UFSM); LUCIANO GEBLER, CNPUV; MÁRCIO DA SILVA SANTOS, CNPUV. |
Título: |
Soil organic matter and clay predictions by laboratory spectroscopy: Data spatial correlation. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Geoderma Regional, v. 28, e00486, mar. 2022. |
Páginas: |
11 |
Idioma: |
Inglês |
Conteúdo: |
Soil spectroscopy (Vis-NIR-SWIR 350?2500 nm) has known potential to predict clay content and soil organic matter (SOM), which are properties that determine soil quality. It is well known that data predicted from Vis-NIR-SWIR carry prediction errors resulting from modeling process. However, these errors are not spatially correlated and, even being numerically small, they can alter the spatial correlation of the data. Thus, the aim of the study was to evaluate wether clay and SOM data predicted by spectroscopy models preserve the spatial structure of data obtained by traditional chemical analyses. This was done considering a soil-spectral dataset from a small viticultural area (3 ha) in Southern Brazil. Soil samples were collected in 74 sites, in two depths (0.00?0.20 m and 0.20?0.40 m depth). Collected in 74 sites, totaling 148 soil samples. The Vis-NIR-SWIR data were used to train spectral models in raw form, and subjected to three pre-processing techniques (smoothing - SMO; Savitzky-Golay with first derivative - SGD; Binning - BIN). In the calibration step, three machine learning techniques were tested (Cubist ?CUB; Random Forest ?RF; Partial Least Squares Regression - PLSR). The spatial correlation of the data measured by traditional wet chemistry, as well the data predicted by spectroscopy, was analyzed clay and SOM maps were then generated by ordinary kriging for both data. Among the spectral models, the RF + SGD model presented the best cross-validation performance for clay, with R2cv = 0.95 and RMSEcv = 1.06%, and the PLSR + SGD for SOM, with R2cv = 0.98 and RMSEcv = 0.07%. The data predicted by Vis-NIRSWIR spectroscopy preserved the spatial structure of the data obtained by the traditional wet chemical analysis. However, our results suggest that spectral modeling was more effective in predicting SOM while spatial interpolation was more effective in predicting clay. Data predicted by Vis-NIR-SWIR spectroscopy with lower accuracy increased the residuals of the spatial predictions. The clay and SOM maps prodiced with spectroscopy predictions show similarities and feasible accuracy for the use and management of agricultural soils in vineyard areas. MenosSoil spectroscopy (Vis-NIR-SWIR 350?2500 nm) has known potential to predict clay content and soil organic matter (SOM), which are properties that determine soil quality. It is well known that data predicted from Vis-NIR-SWIR carry prediction errors resulting from modeling process. However, these errors are not spatially correlated and, even being numerically small, they can alter the spatial correlation of the data. Thus, the aim of the study was to evaluate wether clay and SOM data predicted by spectroscopy models preserve the spatial structure of data obtained by traditional chemical analyses. This was done considering a soil-spectral dataset from a small viticultural area (3 ha) in Southern Brazil. Soil samples were collected in 74 sites, in two depths (0.00?0.20 m and 0.20?0.40 m depth). Collected in 74 sites, totaling 148 soil samples. The Vis-NIR-SWIR data were used to train spectral models in raw form, and subjected to three pre-processing techniques (smoothing - SMO; Savitzky-Golay with first derivative - SGD; Binning - BIN). In the calibration step, three machine learning techniques were tested (Cubist ?CUB; Random Forest ?RF; Partial Least Squares Regression - PLSR). The spatial correlation of the data measured by traditional wet chemistry, as well the data predicted by spectroscopy, was analyzed clay and SOM maps were then generated by ordinary kriging for both data. Among the spectral models, the RF + SGD model presented the best cross-validation performance for ... Mostrar Tudo |
Palavras-Chave: |
Clay content; Digital soil mapping; Ferralsol; Spatial structure; Vis-NIR-SWIR spectroscopy. |
Thesaurus NAL: |
Kriging; Soil organic matter. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 03014naa a2200289 a 4500 001 2140489 005 2023-08-24 008 2022 bl uuuu u00u1 u #d 100 1 $aSILVA-SANGO, D. V. da 245 $aSoil organic matter and clay predictions by laboratory spectroscopy$bData spatial correlation.$h[electronic resource] 260 $c2022 300 $a11 520 $aSoil spectroscopy (Vis-NIR-SWIR 350?2500 nm) has known potential to predict clay content and soil organic matter (SOM), which are properties that determine soil quality. It is well known that data predicted from Vis-NIR-SWIR carry prediction errors resulting from modeling process. However, these errors are not spatially correlated and, even being numerically small, they can alter the spatial correlation of the data. Thus, the aim of the study was to evaluate wether clay and SOM data predicted by spectroscopy models preserve the spatial structure of data obtained by traditional chemical analyses. This was done considering a soil-spectral dataset from a small viticultural area (3 ha) in Southern Brazil. Soil samples were collected in 74 sites, in two depths (0.00?0.20 m and 0.20?0.40 m depth). Collected in 74 sites, totaling 148 soil samples. The Vis-NIR-SWIR data were used to train spectral models in raw form, and subjected to three pre-processing techniques (smoothing - SMO; Savitzky-Golay with first derivative - SGD; Binning - BIN). In the calibration step, three machine learning techniques were tested (Cubist ?CUB; Random Forest ?RF; Partial Least Squares Regression - PLSR). The spatial correlation of the data measured by traditional wet chemistry, as well the data predicted by spectroscopy, was analyzed clay and SOM maps were then generated by ordinary kriging for both data. Among the spectral models, the RF + SGD model presented the best cross-validation performance for clay, with R2cv = 0.95 and RMSEcv = 1.06%, and the PLSR + SGD for SOM, with R2cv = 0.98 and RMSEcv = 0.07%. The data predicted by Vis-NIRSWIR spectroscopy preserved the spatial structure of the data obtained by the traditional wet chemical analysis. However, our results suggest that spectral modeling was more effective in predicting SOM while spatial interpolation was more effective in predicting clay. Data predicted by Vis-NIR-SWIR spectroscopy with lower accuracy increased the residuals of the spatial predictions. The clay and SOM maps prodiced with spectroscopy predictions show similarities and feasible accuracy for the use and management of agricultural soils in vineyard areas. 650 $aKriging 650 $aSoil organic matter 653 $aClay content 653 $aDigital soil mapping 653 $aFerralsol 653 $aSpatial structure 653 $aVis-NIR-SWIR spectroscopy 700 1 $aHORST, T. Z. 700 1 $aMOURA-BUENO, J. M. 700 1 $aDALMOLIN, R. S. D. 700 1 $aSEBEM, E. 700 1 $aGEBLER, L. 700 1 $aSANTOS, M. da S. 773 $tGeoderma Regional$gv. 28, e00486, mar. 2022.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Uva e Vinho (CNPUV) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|