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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Soja. |
Data corrente: |
26/02/2014 |
Data da última atualização: |
04/06/2014 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
FAGERIA, N. K.; MOREIRA, A.; MORAES, L. A. C.; MORAES, M. F. |
Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ADONIS MOREIRA, CNPSO; LARISSA ALEXANDRA CARDOSO MORAES, CNPSO; M. F. MORAES. |
Título: |
Nitrogen uptake and use efficiency in upland rice under two nitrogen sources. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 45, n. 4, p. 461-469, 2014. |
ISSN: |
0010-3624 |
DOI: |
10.1080/00103624.2013.861907 |
Idioma: |
Inglês |
Conteúdo: |
Upland rice is an important crop in South America, including Brazil. Nitrogen (N) is one of the most yield-limiting nutrients in upland rice production in Brazil. A greenhouse experiment was conducted to evaluate N uptake and use efficiency as influenced by N sources. The soil used in the experiment was an Oxisol. The N sources were ammonium sulfate and urea, and N rates were 0, 50, 100, 150, 300, and 400 mg kg−1 of soil. Nitrogen concentrations in the root, shoot, and grain were significantly influenced by N sources. The N rate and N source significantly influenced the N uptake in root, shoot, and grain. Similarly, nitrogen rate by N source interaction was also significant for N uptake in the root, shoot, and grain, indicating N source has a significant influence on uptake of N. Overall, concentration (content per unit dry weight) of N was greater in the grain, followed by root and shoot. Agronomical efficiency, apparent recovery efficiency, and utilization efficiency of N were significantly influenced by N rate and varied with N sources. However, physiological and agrophysiological efficiencies were only influenced significantly by N sources. Overall, N recovery efficiency was 33% for ammonium sulfate and 37% for urea. Hence, the large amount of N lost from soil?plant system may be by denitrification or voltilization. |
Thesagro: |
Arroz; Microelemento; Nitrogênio; Nutriente; Oryza sativa; Solo. |
Thesaurus Nal: |
Nutrient use efficiency; Rice. |
Categoria do assunto: |
-- P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02147naa a2200277 a 4500 001 1981312 005 2014-06-04 008 2014 bl uuuu u00u1 u #d 022 $a0010-3624 024 7 $a10.1080/00103624.2013.861907$2DOI 100 1 $aFAGERIA, N. K. 245 $aNitrogen uptake and use efficiency in upland rice under two nitrogen sources.$h[electronic resource] 260 $c2014 520 $aUpland rice is an important crop in South America, including Brazil. Nitrogen (N) is one of the most yield-limiting nutrients in upland rice production in Brazil. A greenhouse experiment was conducted to evaluate N uptake and use efficiency as influenced by N sources. The soil used in the experiment was an Oxisol. The N sources were ammonium sulfate and urea, and N rates were 0, 50, 100, 150, 300, and 400 mg kg−1 of soil. Nitrogen concentrations in the root, shoot, and grain were significantly influenced by N sources. The N rate and N source significantly influenced the N uptake in root, shoot, and grain. Similarly, nitrogen rate by N source interaction was also significant for N uptake in the root, shoot, and grain, indicating N source has a significant influence on uptake of N. Overall, concentration (content per unit dry weight) of N was greater in the grain, followed by root and shoot. Agronomical efficiency, apparent recovery efficiency, and utilization efficiency of N were significantly influenced by N rate and varied with N sources. However, physiological and agrophysiological efficiencies were only influenced significantly by N sources. Overall, N recovery efficiency was 33% for ammonium sulfate and 37% for urea. Hence, the large amount of N lost from soil?plant system may be by denitrification or voltilization. 650 $aNutrient use efficiency 650 $aRice 650 $aArroz 650 $aMicroelemento 650 $aNitrogênio 650 $aNutriente 650 $aOryza sativa 650 $aSolo 700 1 $aMOREIRA, A. 700 1 $aMORAES, L. A. C. 700 1 $aMORAES, M. F. 773 $tCommunications in Soil Science and Plant Analysis, New York$gv. 45, n. 4, p. 461-469, 2014.
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Embrapa Arroz e Feijão (CNPAF) |
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521. | ![Imagem marcado/desmarcado](/consulta/web/img/desmarcado.png) | CASTRO, R. L. de; CAIERAO, E.; FONTANELI, R. S.; SANTOS, H. P. dos; SÓ E SILVA, M.; SCHEEREN, P. L.; GUARIENTI, E. M.; MIRANDA, M. Z. de; EICHELBERGER, L.; KOPP, M. M.; NASCIMENTO JUNIOR, A. do; LAU, D.; SANTANA, F. M.; CUNHA, G. R. da; PIRES, J. L. F.; SILVA JUNIOR, J. P. da; COSTAMILAN, L. M.; LIMA, M. I. P. M.; MEDEIROS, C. M. O.; DAVID, D. B. de; CONTERATO, I. F.; TOIGO, M. de C.; AIRES, R. F.; LANNES, S. D.; GARRAFA, M.; SANTOS, F. M. dos. BRS Pastoreio: nova cultivar de trigo duplo propósito da Embrapa. In: REUNIÃO DA COMISSÃO BRASILEIRA DE PESQUISA DE TRIGO E TRITICALE, 10., 2016, Londrina. Anais... Londrina: Comissão Brasileira de Pesquisa de Trigo e Triticale, 2016. 5 p. 1 CD-ROM.Tipo: Artigo em Anais de Congresso |
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