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Registro Completo |
Biblioteca(s): |
Embrapa Café. |
Data corrente: |
29/06/2020 |
Data da última atualização: |
03/07/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
MACIEL, D. A.; SILVA, V. A.; ALVES, H. M. R.; VOLPATO, M. M. L.; BARBOSA, J. P. R. A. de; SOUZA, V. C. O.; SANTOS, M. O.; SILVEIRA, H. R. DE O.; DANTAS, M. F.; FREITAS, A. F. de; SANTOS, J. O. DOS. |
Afiliação: |
DANIEL ANDRADE MACIEL, INSTITUTO NACIONAL DE PESQUISAS ESPACIAIS; VÂNIA APARECIDA SILVA, EPAMIG; HELENA MARIA RAMOS ALVES, CNPCa; MARGARETE MARIN LORDELO VOLPATO, EPAMIG; JOÃO PAULO RODRIGUES ALVES DE BARBOSA, UNIVERSIDADE FEDERAL DE LAVRAS; VANESSA CRISTINA OLIVEIRA SOUZA, UNIVERSIDADE FEDERAL DE ITAJUBÁ; MELINE OLIVEIRA SANTOS, EPAMIG; HELBERT REZENDE DE OLIVEIRA SILVEIRA, EPAMIG; MAYARA FONTES DANTAS, EPAMIG; ANA FLÁVIA DE FREITAS, EPAMIG; JACQUELINE OLIVEIRA DOS SANTOS, EPAMIG. |
Título: |
Leaf water potential of coffee estimated by landsat-8 images. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Plos One, v. 15, n. 3, e031019, Mar. 2020. |
DOI: |
https://doi.org/10.1371/journal.pone.0230013 |
Idioma: |
Português |
Conteúdo: |
Traditionally, water conditions of coffee areas are monitored by measuring the leaf water potential throughout a pressure pump. However, there is a demand for the development of technologies that can estimate large areas or regions. In this context, the objective of this study was to estimate the WW by surface reflectance values and vegetation indices obtained from the Landsat-8/OLI sensor in Minas Gerais-Brazil Several algorithms using OLI bands and vegetation indexes were evaluated and from the correlation analysis, a quadratic algorithm that uses the Normalized Difference Vegetation Index (NDVI) performed better, with a correlation coefficient (R2) of 0.82. Leave-One-Out Cross-Validation (LOOCV) was performed to validate the models and the best results were for NDVI quadratic algorithm, presenting a Mean Absolute Percentage Error (MAPE) of 27.09% and an R2 of 0.85. Subsequently, the NDVI quadratic algorithm was applied to Landsat-8 images, aiming to spatialize the WW estimated in a representative area of regional coffee planting between September 2014 to July 2015. From the proposed algorithm, it was possible to estimate WW from Landsat-8/OLI imagery, contributing to drought monitoring in the coffee area leading to cost reduction to the producers. |
Thesagro: |
Área Foliar; Café; Potencial Hídrico; Produção Agrícola. |
Thesaurus Nal: |
Coffee beans; Leaf water potential; Plantations; Remote sensing. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/214268/1/Leaf-water-petential.pdf
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Marc: |
LEADER 02267naa a2200349 a 4500 001 2123511 005 2020-07-03 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1371/journal.pone.0230013$2DOI 100 1 $aMACIEL, D. A. 245 $aLeaf water potential of coffee estimated by landsat-8 images.$h[electronic resource] 260 $c2020 520 $aTraditionally, water conditions of coffee areas are monitored by measuring the leaf water potential throughout a pressure pump. However, there is a demand for the development of technologies that can estimate large areas or regions. In this context, the objective of this study was to estimate the WW by surface reflectance values and vegetation indices obtained from the Landsat-8/OLI sensor in Minas Gerais-Brazil Several algorithms using OLI bands and vegetation indexes were evaluated and from the correlation analysis, a quadratic algorithm that uses the Normalized Difference Vegetation Index (NDVI) performed better, with a correlation coefficient (R2) of 0.82. Leave-One-Out Cross-Validation (LOOCV) was performed to validate the models and the best results were for NDVI quadratic algorithm, presenting a Mean Absolute Percentage Error (MAPE) of 27.09% and an R2 of 0.85. Subsequently, the NDVI quadratic algorithm was applied to Landsat-8 images, aiming to spatialize the WW estimated in a representative area of regional coffee planting between September 2014 to July 2015. From the proposed algorithm, it was possible to estimate WW from Landsat-8/OLI imagery, contributing to drought monitoring in the coffee area leading to cost reduction to the producers. 650 $aCoffee beans 650 $aLeaf water potential 650 $aPlantations 650 $aRemote sensing 650 $aÁrea Foliar 650 $aCafé 650 $aPotencial Hídrico 650 $aProdução Agrícola 700 1 $aSILVA, V. A. 700 1 $aALVES, H. M. R. 700 1 $aVOLPATO, M. M. L. 700 1 $aBARBOSA, J. P. R. A. de 700 1 $aSOUZA, V. C. O. 700 1 $aSANTOS, M. O. 700 1 $aSILVEIRA, H. R. DE O. 700 1 $aDANTAS, M. F. 700 1 $aFREITAS, A. F. de 700 1 $aSANTOS, J. O. DOS 773 $tPlos One$gv. 15, n. 3, e031019, Mar. 2020.
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Registro original: |
Embrapa Café (CNPCa) |
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Registro Completo
Biblioteca(s): |
Embrapa Amazônia Ocidental. |
Data corrente: |
27/01/2004 |
Data da última atualização: |
11/09/2013 |
Autoria: |
SOUZA, A. das G. C. de. |
Título: |
Estimativas de parâmetros genéticos em progênies de cupuaçuzeiro (Theobroma grandiflorum (Willd ex Spreng) Schum. |
Ano de publicação: |
1999 |
Fonte/Imprenta: |
Manaus: Embrapa Amazônia Ocidental, 1999. |
Páginas: |
3 p. |
Série: |
(Embrapa Amazônia Ocidental. Pesquisa em Andamento, 41). |
ISSN: |
1517-2538 |
Idioma: |
Português |
Conteúdo: |
O objetivo deste trabalho foi avaliar o potencial genético de progênies de cupuaçuzeiro para fins de melhoramento, pela estimativa de alguns parâmetros genéticos. |
Palavras-Chave: |
Amazonas; Brasil. |
Thesagro: |
Cupuaçu; Theobroma Grandiflorum. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/89184/1/PA-41.pdf
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Marc: |
LEADER 00770nam a2200193 a 4500 001 1672809 005 2013-09-11 008 1999 bl uuuu u0uu1 u #d 022 $a1517-2538 100 1 $aSOUZA, A. das G. C. de 245 $aEstimativas de parâmetros genéticos em progênies de cupuaçuzeiro (Theobroma grandiflorum (Willd ex Spreng) Schum. 260 $aManaus: Embrapa Amazônia Ocidental$c1999 300 $a3 p. 490 $a(Embrapa Amazônia Ocidental. Pesquisa em Andamento, 41). 520 $aO objetivo deste trabalho foi avaliar o potencial genético de progênies de cupuaçuzeiro para fins de melhoramento, pela estimativa de alguns parâmetros genéticos. 650 $aCupuaçu 650 $aTheobroma Grandiflorum 653 $aAmazonas 653 $aBrasil
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Embrapa Amazônia Ocidental (CPAA) |
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