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Registro Completo |
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
Data corrente: |
23/05/2023 |
Data da última atualização: |
23/05/2023 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
PINTO, V. M.; REIS, A. F. de B.; MELO, M. L. A. de; REICHARDT, K.; SANTOS, D.; VAN LIER, Q. de J. |
Afiliação: |
VICTOR MERIGUETTI PINTO, CENA; ANDRE FROES DE BORJA REIS, LOUISIANA STATE UNIVERSITY; MARINA LUCIANA ABREU DE MELO, CENA; KLAUS REICHARDT, CENA; DEIVISON SANTOS, CNPASA; QUIRIJN DE JONG VAN LIER, CENA. |
Título: |
Sustainable irrigation management in tropical lowland rice in Brazil. |
Ano de publicação: |
2023 |
Fonte/Imprenta: |
Agricultural Water Management, v. 284, 108345, 2023. |
ISSN: |
0378-3774 |
Idioma: |
Inglês |
Conteúdo: |
Drought events and water use conflicts drive the need for more efficient water management in rice-growing areas of the Brazilian Cerrado. Recent studies have shown the advantages of adopting water-saving irrigation in the region but a comprehensive assessment is needed. This study aims to model the performance of rice cultivation and water productivity in the tropical floodplains of the Cerrado biome of northern Brazil in response to irrigation management under contrasting seasonal rainfall levels. Twenty-seven scenarios of rice cultivation, resulting from the combination of three sites, three irrigation treatments, and three rainfall regimes, were simulated with the calibrated and validated hydrological model SWAP/WOFOST. The rainfall levels high (1501 mm), intermediate (952 mm), and low (510 mm) were relative to 120 days and obtained from weather stations located in the region. Two irrigation methods (flooding and water-saving irrigation) were compared against rainfed cultivation. Actual transpiration of the flooding and water-saving irrigation was 9 % and 4 % higher in the intermediate and high rainfall scenarios while it was 30 % and 20 % higher in the low rainfall scenario compared to the rainfed treatment. The largest deep percolation loss was 12700 mm per season for flood irrigation in the low rainfall scenario, whereas the lowest one was 349 mm for the rainfed treatment in the low rainfall scenario. Changing from flooding to water-saving irrigation increases water productivity by an average of 9 % and decreases relative grain yield by 5-12 %. Water productivity based on bottom flux increased on average by about five times (high rainfall scenario) to ten times (low rainfall scenario) when comparing flooding with water-saving irrigation. Results suggest that saving irrigation based on crop transpiration can reduce deep percolation losses and increase water productivity in the rice-growing areas of the Brazilian Cerrado. MenosDrought events and water use conflicts drive the need for more efficient water management in rice-growing areas of the Brazilian Cerrado. Recent studies have shown the advantages of adopting water-saving irrigation in the region but a comprehensive assessment is needed. This study aims to model the performance of rice cultivation and water productivity in the tropical floodplains of the Cerrado biome of northern Brazil in response to irrigation management under contrasting seasonal rainfall levels. Twenty-seven scenarios of rice cultivation, resulting from the combination of three sites, three irrigation treatments, and three rainfall regimes, were simulated with the calibrated and validated hydrological model SWAP/WOFOST. The rainfall levels high (1501 mm), intermediate (952 mm), and low (510 mm) were relative to 120 days and obtained from weather stations located in the region. Two irrigation methods (flooding and water-saving irrigation) were compared against rainfed cultivation. Actual transpiration of the flooding and water-saving irrigation was 9 % and 4 % higher in the intermediate and high rainfall scenarios while it was 30 % and 20 % higher in the low rainfall scenario compared to the rainfed treatment. The largest deep percolation loss was 12700 mm per season for flood irrigation in the low rainfall scenario, whereas the lowest one was 349 mm for the rainfed treatment in the low rainfall scenario. Changing from flooding to water-saving irrigation increases water pr... Mostrar Tudo |
Palavras-Chave: |
SWAP model; Water productivity. |
Thesagro: |
Arroz; Cerrado; Irrigação. |
Thesaurus Nal: |
Irrigation; Rice. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1153943/1/awm-2023.pdf
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Marc: |
LEADER 02696naa a2200277 a 4500 001 2153943 005 2023-05-23 008 2023 bl uuuu u00u1 u #d 022 $a0378-3774 100 1 $aPINTO, V. M. 245 $aSustainable irrigation management in tropical lowland rice in Brazil.$h[electronic resource] 260 $c2023 520 $aDrought events and water use conflicts drive the need for more efficient water management in rice-growing areas of the Brazilian Cerrado. Recent studies have shown the advantages of adopting water-saving irrigation in the region but a comprehensive assessment is needed. This study aims to model the performance of rice cultivation and water productivity in the tropical floodplains of the Cerrado biome of northern Brazil in response to irrigation management under contrasting seasonal rainfall levels. Twenty-seven scenarios of rice cultivation, resulting from the combination of three sites, three irrigation treatments, and three rainfall regimes, were simulated with the calibrated and validated hydrological model SWAP/WOFOST. The rainfall levels high (1501 mm), intermediate (952 mm), and low (510 mm) were relative to 120 days and obtained from weather stations located in the region. Two irrigation methods (flooding and water-saving irrigation) were compared against rainfed cultivation. Actual transpiration of the flooding and water-saving irrigation was 9 % and 4 % higher in the intermediate and high rainfall scenarios while it was 30 % and 20 % higher in the low rainfall scenario compared to the rainfed treatment. The largest deep percolation loss was 12700 mm per season for flood irrigation in the low rainfall scenario, whereas the lowest one was 349 mm for the rainfed treatment in the low rainfall scenario. Changing from flooding to water-saving irrigation increases water productivity by an average of 9 % and decreases relative grain yield by 5-12 %. Water productivity based on bottom flux increased on average by about five times (high rainfall scenario) to ten times (low rainfall scenario) when comparing flooding with water-saving irrigation. Results suggest that saving irrigation based on crop transpiration can reduce deep percolation losses and increase water productivity in the rice-growing areas of the Brazilian Cerrado. 650 $aIrrigation 650 $aRice 650 $aArroz 650 $aCerrado 650 $aIrrigação 653 $aSWAP model 653 $aWater productivity 700 1 $aREIS, A. F. de B. 700 1 $aMELO, M. L. A. de 700 1 $aREICHARDT, K. 700 1 $aSANTOS, D. 700 1 $aVAN LIER, Q. de J. 773 $tAgricultural Water Management$gv. 284, 108345, 2023.
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Embrapa Pesca e Aquicultura (CNPASA) |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
Data corrente: |
16/08/2022 |
Data da última atualização: |
17/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 3 |
Autoria: |
SOUZA FILHO, H. M. DE; ROSA, F. T.; VINHOLIS, M. de M. B. |
Afiliação: |
HILDO MEIRELLES DE SOUZA FILHO, UFSCAR; FABIANO TITO ROSA, SCOT CONSULTORIA; MARCELA DE MELLO BRANDAO VINHOLIS, CPPSE. |
Título: |
Análise da competitividade da cadeia produtiva da carne bovina do estado de São Paulo. |
Ano de publicação: |
2010 |
Fonte/Imprenta: |
Informações Econômicas, v. 40, n. 3, mar. 2010. |
Páginas: |
p. 16-28. |
Idioma: |
Português |
Conteúdo: |
Este artigo tem como objetivo avaliar a competitividade da cadeia de carne bovina de São Paulo. A metodologia de 'pesquisa rápida' foi utilizada para avaliar sete direcionadores de competitividade: tecnologia, segurança dos alimentos, tributação, coordenação, crédito, extensão e infra-estrutura. Os aspectos críticos identificados foram: reduzida oferta de animais para abate, 'guerra fiscal' e custos de produção elevados. Já os aspectos favoráveis foram: infraestrutura logística e de P&D, qualidade da mão-de-obra e a proximidade do principal mercado consumidor. Quanto às ações recomendadas, tem-se: incentivo à pesquisa e difusão de tecnologias, estratégias de agregação de valor à carne, melhoria do status/padrão sanitário e revisão do sistema tributário. |
Palavras-Chave: |
Cadeia de carne bovina; Competitividade. |
Thesagro: |
Agronegócio; Gado de Corte. |
Categoria do assunto: |
E Economia e Indústria Agrícola |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1145467/1/AnaliseCompetitividadeCadeia.pdf
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Marc: |
LEADER 01407naa a2200205 a 4500 001 2145467 005 2022-08-17 008 2010 bl uuuu u00u1 u #d 100 1 $aSOUZA FILHO, H. M. DE 245 $aAnálise da competitividade da cadeia produtiva da carne bovina do estado de São Paulo.$h[electronic resource] 260 $c2010 300 $ap. 16-28. 520 $aEste artigo tem como objetivo avaliar a competitividade da cadeia de carne bovina de São Paulo. A metodologia de 'pesquisa rápida' foi utilizada para avaliar sete direcionadores de competitividade: tecnologia, segurança dos alimentos, tributação, coordenação, crédito, extensão e infra-estrutura. Os aspectos críticos identificados foram: reduzida oferta de animais para abate, 'guerra fiscal' e custos de produção elevados. Já os aspectos favoráveis foram: infraestrutura logística e de P&D, qualidade da mão-de-obra e a proximidade do principal mercado consumidor. Quanto às ações recomendadas, tem-se: incentivo à pesquisa e difusão de tecnologias, estratégias de agregação de valor à carne, melhoria do status/padrão sanitário e revisão do sistema tributário. 650 $aAgronegócio 650 $aGado de Corte 653 $aCadeia de carne bovina 653 $aCompetitividade 700 1 $aROSA, F. T. 700 1 $aVINHOLIS, M. de M. B. 773 $tInformações Econômicas$gv. 40, n. 3, mar. 2010.
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