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| 66. | | GOMES, G. M. F.; VASCONCELOS, A. M.; VASCONCELOS, A. S. do E.; LIMA, A. R.; CARNEIRO, J. da C.; LANDIM, A. V.; FONTELES, N. L. O.; FIGUEIREDO, H. O. S. Degradabilidade in situ do bagaço de cana-de-açucar para pequenos ruminantes de raças naturalizadas do nordeste brasileiro. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, v. 65, n. 6, p. 1792-1800, 2013.| Biblioteca(s): Embrapa Gado de Leite. |
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 | 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
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Biblioteca(s): |
Embrapa Pesca e Aquicultura. |
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Data corrente: |
15/05/2018 |
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Data da última atualização: |
15/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
REIS, A. F. de B.; VASCONCELOS, A. L. S.; ALMEIDA, R. E. M. de; LAGO, B. C.; DIAS, C. T. S.; FAVARIN, J. L. |
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Afiliação: |
ANDRE FROES DE BORJA REIS, ESALQ; ANA LUISA SOARES VASCONCELOS, ESALQ; RODRIGO ESTEVAM MUNHOZ DE ALMEIDA, CNPASA; BRUNO COCCO LAGO, ESALQ; CARLOS TADEU SANTOS DIAS, ESALQ; JOSE LAERCIO FAVARIN, ESALQ. |
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Título: |
Relationship of nitrogen and crop performance in aerobic rice and continuous flooding irrigation in weathered tropical lowland. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
European Journal of Agronomy, v. 95, p. 14-23, Apr. 2018. |
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DOI: |
10.1016/j.eja.2018.01.016 |
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Idioma: |
Inglês |
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Conteúdo: |
Aerobic rice is a promising rice production system which enables rice to grow in water-constrained environments and provides an alternative to continuous flooding irrigation. Although significant water savings are reported in aerobic systems in different lowland regions, a negative impact in crop performance prevents its wide deployment. The main reasons for grain yield decreases are given to be genotype and inappropriate water supply. However, agronomic practices such nitrogen management can interfere in overall crop performance of rice due to the influence of soil moisture on N availability to crop uptake. The goal of this research was to establish a relationship between nitrogen use and crop performance by comparing flooding conditions to aerobic rice in a tropical environmental with adequate water supply. A field experiment was carried out from 2014 to 2016 with an experimental design of split plot with irrigation regime (IR) in the main plot: continuous flooding (CF) and non-flooding aerobic (NF), and in the subplot fertilizer nitrogen rates: (0, 50, 150 and 250 kg ha−1). Crop above ground biomass (AGB) and nitrogen uptake (NU) were quantified during crop development only in the 0 and 150 kg ha−1 subplots, as was the relationship between AGB, NU, grain yield and its components and all nitrogen rates at harvest. The aerobic rice provided higher NU throughout rice development. At harvesting, NU and panicle density (PD) had different relationships to N rates among CF and NF, with NF showing 18% higher NU and 27% PD across years and N rate. The grain yield (GY) relationship to N rates was also distinct in 2014 and 2015, and GY across N rates in NF was 20% and 12% higher than CF for 2014 and 2015, respectively. We conclude that lowland rice managed through aerobic system improves nitrogen uptake by rice crop as long the water filled space remains around 60%. MenosAerobic rice is a promising rice production system which enables rice to grow in water-constrained environments and provides an alternative to continuous flooding irrigation. Although significant water savings are reported in aerobic systems in different lowland regions, a negative impact in crop performance prevents its wide deployment. The main reasons for grain yield decreases are given to be genotype and inappropriate water supply. However, agronomic practices such nitrogen management can interfere in overall crop performance of rice due to the influence of soil moisture on N availability to crop uptake. The goal of this research was to establish a relationship between nitrogen use and crop performance by comparing flooding conditions to aerobic rice in a tropical environmental with adequate water supply. A field experiment was carried out from 2014 to 2016 with an experimental design of split plot with irrigation regime (IR) in the main plot: continuous flooding (CF) and non-flooding aerobic (NF), and in the subplot fertilizer nitrogen rates: (0, 50, 150 and 250 kg ha−1). Crop above ground biomass (AGB) and nitrogen uptake (NU) were quantified during crop development only in the 0 and 150 kg ha−1 subplots, as was the relationship between AGB, NU, grain yield and its components and all nitrogen rates at harvest. The aerobic rice provided higher NU throughout rice development. At harvesting, NU and panicle density (PD) had different rel... Mostrar Tudo |
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Thesagro: |
Arroz; Irrigação; Nitrogênio. |
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Thesaurus NAL: |
Aerobic conditions; Grain yield; Irrigation; Plinthaquults; Rice. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02792naa a2200289 a 4500
001 2091453
005 2018-05-15
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.eja.2018.01.016$2DOI
100 1 $aREIS, A. F. de B.
245 $aRelationship of nitrogen and crop performance in aerobic rice and continuous flooding irrigation in weathered tropical lowland.$h[electronic resource]
260 $c2018
520 $aAerobic rice is a promising rice production system which enables rice to grow in water-constrained environments and provides an alternative to continuous flooding irrigation. Although significant water savings are reported in aerobic systems in different lowland regions, a negative impact in crop performance prevents its wide deployment. The main reasons for grain yield decreases are given to be genotype and inappropriate water supply. However, agronomic practices such nitrogen management can interfere in overall crop performance of rice due to the influence of soil moisture on N availability to crop uptake. The goal of this research was to establish a relationship between nitrogen use and crop performance by comparing flooding conditions to aerobic rice in a tropical environmental with adequate water supply. A field experiment was carried out from 2014 to 2016 with an experimental design of split plot with irrigation regime (IR) in the main plot: continuous flooding (CF) and non-flooding aerobic (NF), and in the subplot fertilizer nitrogen rates: (0, 50, 150 and 250 kg ha−1). Crop above ground biomass (AGB) and nitrogen uptake (NU) were quantified during crop development only in the 0 and 150 kg ha−1 subplots, as was the relationship between AGB, NU, grain yield and its components and all nitrogen rates at harvest. The aerobic rice provided higher NU throughout rice development. At harvesting, NU and panicle density (PD) had different relationships to N rates among CF and NF, with NF showing 18% higher NU and 27% PD across years and N rate. The grain yield (GY) relationship to N rates was also distinct in 2014 and 2015, and GY across N rates in NF was 20% and 12% higher than CF for 2014 and 2015, respectively. We conclude that lowland rice managed through aerobic system improves nitrogen uptake by rice crop as long the water filled space remains around 60%.
650 $aAerobic conditions
650 $aGrain yield
650 $aIrrigation
650 $aPlinthaquults
650 $aRice
650 $aArroz
650 $aIrrigação
650 $aNitrogênio
700 1 $aVASCONCELOS, A. L. S.
700 1 $aALMEIDA, R. E. M. de
700 1 $aLAGO, B. C.
700 1 $aDIAS, C. T. S.
700 1 $aFAVARIN, J. L.
773 $tEuropean Journal of Agronomy$gv. 95, p. 14-23, Apr. 2018.
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