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![](/consulta/web/img/deny.png) | Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
Data corrente: |
11/01/2018 |
Data da última atualização: |
05/02/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
REIS, A. F. de B.; ALMEIDA, R. E. M. de; LAGO, B. C.; TRIVELIN, P. C.; LINQUIST, B.; FAVARIN, J. L. |
Afiliação: |
ANDRE FROES DE BORJA REIS, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; BRUNO COCCO LAGO, ESALQ; PAULO CESAR TRIVELIN, CENA; BRUCE LINQUIST, UNIVERSITY CALIFORNIA, Davis-CA; JOSE LAERCIO FAVARIN, ESALQ. |
Título: |
Aerobic rice system improves water productivity, nitrogen recovery and crop performance in Brazilian weathered lowland soil. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Field Crops Research, v. 218, p. 59-68, 2018. |
ISSN: |
0378-4290 |
DOI: |
10.1016/j.fcr.2018.01.002 |
Idioma: |
Inglês |
Conteúdo: |
Worldwide, rice systems are faced with the challenge of producing higher yields with less water. Water savings practices such as aerobic system and alternate wetting and drying (AWD) are being evaluated in lowland rice systems. However, few studies have been conducted on this subject in tropical South America where soils are highly weathered. Thus, a three-year field experiment was conducted in Brazil on a lowland Plinthaquults to investigate crop performance, water input productivity (WPin) and N recovery under five irrigation regimes: continuous flooding (CF); AWD with short cycle (AWDS); AWD with long cycle (AWDL); saturated soil without ponded water (SS); and aerobic (AR). The drying events in AWDS occurred more frequently than in AWDL. The experimental design was a split-plot with irrigation regimes in the main plot and N fertilizer rate, 0 or 150 kg N ha-1, in the subplot. 15N micro-plots were set up to examine the fate of N fertilizer. The highest grain yields for 150N and 0N treatments resulted from the AR irrigation regime and averaged 9.1 and 6.5 mg ha-1, respectively. Yields among the others irrigations regimes varied from year to the next, but the average was 8.5 and 5.4 mg ha-1 in the 150N and 0N treatments, respectively. Higher yields are attributed to higher N uptake and greater N recovery in the AR treatment. Apparent N recovery averaged 58% in the AR treatment compared to 34% in the other treatments. Similarly, total recovery (plant and soil) of 15N in the AR treatment was 82%, compared to 62, 61, 56, 56% in SS, AWDS, AWDL, CF respectively. Higher N recovery in the AR was likely the result of lower N losses. Irrigation inputs ranged from 15mm in the AR to 1337mm in the CF treatment. The WPin (kg m-3) averaged 0.8 in AR, and 0.5, 0.4, 0.5 and 0.4 in SS, CF, AWDS, AWDL and CF. Thus, in this environment, rice productivity, water productivity, and N use efficiency were all enhanced in aerobic systems relative to continuous flooding or any alternative irrigation regime. MenosWorldwide, rice systems are faced with the challenge of producing higher yields with less water. Water savings practices such as aerobic system and alternate wetting and drying (AWD) are being evaluated in lowland rice systems. However, few studies have been conducted on this subject in tropical South America where soils are highly weathered. Thus, a three-year field experiment was conducted in Brazil on a lowland Plinthaquults to investigate crop performance, water input productivity (WPin) and N recovery under five irrigation regimes: continuous flooding (CF); AWD with short cycle (AWDS); AWD with long cycle (AWDL); saturated soil without ponded water (SS); and aerobic (AR). The drying events in AWDS occurred more frequently than in AWDL. The experimental design was a split-plot with irrigation regimes in the main plot and N fertilizer rate, 0 or 150 kg N ha-1, in the subplot. 15N micro-plots were set up to examine the fate of N fertilizer. The highest grain yields for 150N and 0N treatments resulted from the AR irrigation regime and averaged 9.1 and 6.5 mg ha-1, respectively. Yields among the others irrigations regimes varied from year to the next, but the average was 8.5 and 5.4 mg ha-1 in the 150N and 0N treatments, respectively. Higher yields are attributed to higher N uptake and greater N recovery in the AR treatment. Apparent N recovery averaged 58% in the AR treatment compared to 34% in the other treatments. Similarly, total recovery (plant and soil) of 15N in the A... Mostrar Tudo |
Palavras-Chave: |
Isotopic recovery; Water saving. |
Thesagro: |
Arroz; Oryza sativa. |
Thesaurus Nal: |
Nutrient use efficiency; Rice; Ultisols. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02866naa a2200289 a 4500 001 2085049 005 2019-02-05 008 2018 bl uuuu u00u1 u #d 022 $a0378-4290 024 7 $a10.1016/j.fcr.2018.01.002$2DOI 100 1 $aREIS, A. F. de B. 245 $aAerobic rice system improves water productivity, nitrogen recovery and crop performance in Brazilian weathered lowland soil.$h[electronic resource] 260 $c2018 520 $aWorldwide, rice systems are faced with the challenge of producing higher yields with less water. Water savings practices such as aerobic system and alternate wetting and drying (AWD) are being evaluated in lowland rice systems. However, few studies have been conducted on this subject in tropical South America where soils are highly weathered. Thus, a three-year field experiment was conducted in Brazil on a lowland Plinthaquults to investigate crop performance, water input productivity (WPin) and N recovery under five irrigation regimes: continuous flooding (CF); AWD with short cycle (AWDS); AWD with long cycle (AWDL); saturated soil without ponded water (SS); and aerobic (AR). The drying events in AWDS occurred more frequently than in AWDL. The experimental design was a split-plot with irrigation regimes in the main plot and N fertilizer rate, 0 or 150 kg N ha-1, in the subplot. 15N micro-plots were set up to examine the fate of N fertilizer. The highest grain yields for 150N and 0N treatments resulted from the AR irrigation regime and averaged 9.1 and 6.5 mg ha-1, respectively. Yields among the others irrigations regimes varied from year to the next, but the average was 8.5 and 5.4 mg ha-1 in the 150N and 0N treatments, respectively. Higher yields are attributed to higher N uptake and greater N recovery in the AR treatment. Apparent N recovery averaged 58% in the AR treatment compared to 34% in the other treatments. Similarly, total recovery (plant and soil) of 15N in the AR treatment was 82%, compared to 62, 61, 56, 56% in SS, AWDS, AWDL, CF respectively. Higher N recovery in the AR was likely the result of lower N losses. Irrigation inputs ranged from 15mm in the AR to 1337mm in the CF treatment. The WPin (kg m-3) averaged 0.8 in AR, and 0.5, 0.4, 0.5 and 0.4 in SS, CF, AWDS, AWDL and CF. Thus, in this environment, rice productivity, water productivity, and N use efficiency were all enhanced in aerobic systems relative to continuous flooding or any alternative irrigation regime. 650 $aNutrient use efficiency 650 $aRice 650 $aUltisols 650 $aArroz 650 $aOryza sativa 653 $aIsotopic recovery 653 $aWater saving 700 1 $aALMEIDA, R. E. M. de 700 1 $aLAGO, B. C. 700 1 $aTRIVELIN, P. C. 700 1 $aLINQUIST, B. 700 1 $aFAVARIN, J. L. 773 $tField Crops Research$gv. 218, p. 59-68, 2018.
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Embrapa Pesca e Aquicultura (CNPASA) |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
30/10/2012 |
Data da última atualização: |
07/12/2023 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
MUNIZ, M. M. M.; SOUSA, R. T.; QUEIROZ, S. dos S.; ALVES, A. A. C.; LOBO, A. M. B. O.; LOBO, R. N. B. |
Afiliação: |
Maria Malane Magalhães Muniz, Graduação - Universidade Estadual Vale do Acaraú (UVA) - Sobral, CE.; Rafael Teixeira Sousa, Pós-graduação - UVA - Sobral, CE.; Silmara dos Santos Queiroz, Graduação - UVA - Sobral, CE.; Anderson Antonio Carvalho Alves, Graduação - UVA - Sobral, CE.; ANA MARIA BEZERRA OLIVEIRA LOBO, CNPC; RAIMUNDO NONATO BRAGA LOBO, CNPC. |
Título: |
Relação do peso ao nascimento e a sobrevivência de cordeiros da raça Morada Nova. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
In: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 1., 2012, Sobral. Resumos... Sobral: Embrapa Caprinos e Ovinos, 2012. p. 26-27. (Embrapa Caprinos e Ovinos. Documentos, 104). |
Idioma: |
Português |
Palavras-Chave: |
Raça Morada Nova. |
Thesagro: |
Melhoramento genético animal; Mortalidade animal; Ovino; Peso ao nascer; Seleção; Sobrevivência. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/69040/1/rac-Relacao-do-peso.pdf
|
Marc: |
LEADER 00883nam a2200241 a 4500 001 1938518 005 2023-12-07 008 2012 bl uuuu u00u1 u #d 100 1 $aMUNIZ, M. M. M. 245 $aRelação do peso ao nascimento e a sobrevivência de cordeiros da raça Morada Nova.$h[electronic resource] 260 $aIn: ENCONTRO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA CAPRINOS E OVINOS, 1., 2012, Sobral. Resumos... Sobral: Embrapa Caprinos e Ovinos, 2012. p. 26-27. (Embrapa Caprinos e Ovinos. Documentos, 104).$c2012 650 $aMelhoramento genético animal 650 $aMortalidade animal 650 $aOvino 650 $aPeso ao nascer 650 $aSeleção 650 $aSobrevivência 653 $aRaça Morada Nova 700 1 $aSOUSA, R. T. 700 1 $aQUEIROZ, S. dos S. 700 1 $aALVES, A. A. C. 700 1 $aLOBO, A. M. B. O. 700 1 $aLOBO, R. N. B.
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