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Biblioteca(s): |
Embrapa Territorial. |
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Data corrente: |
09/08/2017 |
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Data da última atualização: |
09/08/2017 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
BRANDAO, Z. N.; GREGO, C. R.; MANJOLIN, R. C. |
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Afiliação: |
ZIANY NEIVA BRANDAO, CNPA; CELIA REGINA GREGO, CNPM; RODOLFO CORREA MANJOLIN, Estagiário CNPM. |
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Título: |
Geoestatistical tools and spectral measurements from AWiFs data for evaluation of N and P contents in cotton leaves. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
In: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 18., 2017, Santos. Anais ... Santos: INPE, 2017. |
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Páginas: |
p. 2408-2415 |
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Idioma: |
Inglês |
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Conteúdo: |
Satellite images and geostatistics are useful tools to assess the nutritional status of plants, and thus, understanding the variability of cotton yield in farmers' fields. The resulting kriged maps provide a unique opportunity to overcome both spatial and temporal scaling challenges and understanding the factors that led to crop yield. To support decisions on improving cotton yield, this study combines the conventional statistic analysis, spatial regression modeling of georreferenced data and AWiFs' vegetations indices assessment. The experiments were carried out in a 47.4 ha commercial field of Goiás state, Brazil. Multispectral satellite images at 56 m spatial resolution were collected in a rainfed cotton field in two dates, on 04/01/2011 and 04/10/2012, from AWiFS sensor during the flowering cotton stage. Measures of leaf nitrogen (N) and phosphorus (P) contents were determined over previously georreferenced central points of 70 plots, each one measuring 80X80 m. Data were analyzed using descriptive statistics and geostatistical analyses by building and setting semivariograms and kriging interpolation. Best correlation was found between IVs and nitrogen contents of cotton leaves. Results indicated that NDVI, MSAVI and SAVI were the best indices to estimate P contents at cotton peak flowering. Identifications of spatial differences were possible using geostatistical methods with remote sensing data obtained from medium resolution satellite images, allowing to identify distinct nutritional needs and growth status of canopy to cotton plants. MenosSatellite images and geostatistics are useful tools to assess the nutritional status of plants, and thus, understanding the variability of cotton yield in farmers' fields. The resulting kriged maps provide a unique opportunity to overcome both spatial and temporal scaling challenges and understanding the factors that led to crop yield. To support decisions on improving cotton yield, this study combines the conventional statistic analysis, spatial regression modeling of georreferenced data and AWiFs' vegetations indices assessment. The experiments were carried out in a 47.4 ha commercial field of Goiás state, Brazil. Multispectral satellite images at 56 m spatial resolution were collected in a rainfed cotton field in two dates, on 04/01/2011 and 04/10/2012, from AWiFS sensor during the flowering cotton stage. Measures of leaf nitrogen (N) and phosphorus (P) contents were determined over previously georreferenced central points of 70 plots, each one measuring 80X80 m. Data were analyzed using descriptive statistics and geostatistical analyses by building and setting semivariograms and kriging interpolation. Best correlation was found between IVs and nitrogen contents of cotton leaves. Results indicated that NDVI, MSAVI and SAVI were the best indices to estimate P contents at cotton peak flowering. Identifications of spatial differences were possible using geostatistical methods with remote sensing data obtained from medium resolution satellite images, allowing to identify dist... Mostrar Tudo |
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Palavras-Chave: |
Índices de vegetação; Spatial variability. |
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Thesagro: |
Agricultura de Precisão; Algodão; Sensoriamento remoto. |
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Thesaurus Nal: |
Cotton; Precision agriculture; Remote sensing. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02369nam a2200241 a 4500
001 2073817
005 2017-08-09
008 2017 bl uuuu u00u1 u #d
100 1 $aBRANDAO, Z. N.
245 $aGeoestatistical tools and spectral measurements from AWiFs data for evaluation of N and P contents in cotton leaves.$h[electronic resource]
260 $aIn: SIMPÓSIO BRASILEIRO DE SENSORIAMENTO REMOTO, 18., 2017, Santos. Anais ... Santos: INPE$c2017
300 $ap. 2408-2415
520 $aSatellite images and geostatistics are useful tools to assess the nutritional status of plants, and thus, understanding the variability of cotton yield in farmers' fields. The resulting kriged maps provide a unique opportunity to overcome both spatial and temporal scaling challenges and understanding the factors that led to crop yield. To support decisions on improving cotton yield, this study combines the conventional statistic analysis, spatial regression modeling of georreferenced data and AWiFs' vegetations indices assessment. The experiments were carried out in a 47.4 ha commercial field of Goiás state, Brazil. Multispectral satellite images at 56 m spatial resolution were collected in a rainfed cotton field in two dates, on 04/01/2011 and 04/10/2012, from AWiFS sensor during the flowering cotton stage. Measures of leaf nitrogen (N) and phosphorus (P) contents were determined over previously georreferenced central points of 70 plots, each one measuring 80X80 m. Data were analyzed using descriptive statistics and geostatistical analyses by building and setting semivariograms and kriging interpolation. Best correlation was found between IVs and nitrogen contents of cotton leaves. Results indicated that NDVI, MSAVI and SAVI were the best indices to estimate P contents at cotton peak flowering. Identifications of spatial differences were possible using geostatistical methods with remote sensing data obtained from medium resolution satellite images, allowing to identify distinct nutritional needs and growth status of canopy to cotton plants.
650 $aCotton
650 $aPrecision agriculture
650 $aRemote sensing
650 $aAgricultura de Precisão
650 $aAlgodão
650 $aSensoriamento remoto
653 $aÍndices de vegetação
653 $aSpatial variability
700 1 $aGREGO, C. R.
700 1 $aMANJOLIN, R. C.
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Registro original: |
Embrapa Territorial (CNPM) |
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| Registros recuperados : 6 | |
| 1. |  | CARVALHO, E. J. M.; VELOSO, C. A. C.; MENDES, J. R.; GRAÇA, J. J. da C.; AMERICO, R. R.; CHAGAS, P. S. M. das; REGO, R. S. Caracterização de paramentos físico e da matéria orgânica em latossolo amarelo argiloso sob diferentes agroecossistemas no município de Paragominas-PA. In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA AGUA 12., 1998, Fortaleza. Resumos expandidos. Fortaleza; UFCE, 1998. p. 20-21.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 2. | | CARVALHO, E. J. M.; VELOSO, C. A. C.; GRAÇA, J. J. da C.; AMERICO, R. R.; CHAGAS, P. S. das; MENDES, J. R.; REGO, R. S. Avaliação de parâmetros físicos e da matéria orgânica em latossolo do cerrado e da Amazônia Oriental. In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA AGUA 12., 1998, Fortaleza. Resumos expandidos. Fortaleza: UFCE, 1998. p. 108-109.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 3. | | VELOSO, C. A. C.; AMERICO, R. R.; CHAGAS, P. S.; EL-HUSNY, J. C.; PEREIRA, W. L. M.; TENORIO, A. R. de M. Efeito do potássio na produção de matéria seca em três cultivares de soja. In: REUNIÃO BRASILEIRA DE FERTILIDADE DO SOLO E NUTRIÇÃO DE PLANTAS, 23.; REUNIÃO BRASILEIRA SOBRE MICORRIZAS, 7.; SIMPÓSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 5.; REUNIÃO BRASILEIRA DE BIOLOGIA DO SOLO, 2., 1998, Caxambu. Interrelação fertilidade, biologia do solo e nutrição de plantas: consolidando um paradigma: resumos. Lavras: UFLA: SBCS: SBM, 1998. p. 684. FertBIO 98.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 4. | | PEREIRA, W. L. M.; GRAÇA, J. J. da C.; TENÓRIO, A. R. M.; GAMA, J. R. N. F.; GOÉS, J. E. de M.; MENDEZ, J. G. R.; AMÉRICO, R. R.; CHAGAS, P. S. M.; SILVA, P. R. O. da. Mapa de solos da Estação Experimental de Castanhal - PA. [Belém, PA]:FCAP, 1997. 1 Mapa, color, 66 cm x 95 cm, escala 1:1000.000.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 5. | | TENÓRIO, A. R. M.; GRAÇA, J. J. da C.; GOÉS, J. E. de M.; MENDEZ, J. G. R.; GAMA, J. R. N. F.; SILVA, P. R. O. da; CHAGAS, P. S. M.; AMÉRICO, R. R.; PEREIRA, W. L. M.; PINTO, W. da S.; MENDEZ, J. G. R.; GOÉS, J. E. de M. Mapa de solos da Fazenda Escola Experimental de Igarapé-Açu. [Belém, PA]: FCAP, 1997. 1 Mapa, color, 72 cm x 82 cm, escala 1:3000.| Biblioteca(s): Embrapa Amazônia Oriental. |
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| 6. | | TENORIO, A. R. de M.; GRACA, J. J. da C.; GOES, J. E. M.; MENDEZ, J. R.; GAMA, J. R. N. F.; SILVA, P. R. O. da; CHAGAS, P. S. M. das; SILVA, R. N. P. da; AMERICO, R. R.; PEREIRA, W. L. M. Mapeamento dos solos da estação de piscicultura de Castanhal, PA. Belém, PA: FCAP, 1999. p.5-26. (FCAP. Informe técnico, 25). Encadernado com: TENORIO, A. R. de M.; GRACA, J. J. da C.; GOES, J. E. M.; MENDEZ, J. G. R.; GAMA, J. R. N. F.; SILVA, P. R. O. da; CHAGAS, P. S. M. das; AMERICO, R. R.; PEREIRA, W. L. M.; PINTO, W. da S. Mapeamento e uso atual dos...| Biblioteca(s): Embrapa Amazônia Oriental. |
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| Registros recuperados : 6 | |
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| Expressão de busca inválida. Verifique!!! |
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