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Registro Completo |
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Biblioteca(s): |
Embrapa Hortaliças. |
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Data corrente: |
24/09/1997 |
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Data da última atualização: |
24/09/1997 |
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Autoria: |
EMBRAPA. Departamento de Diretrizes e Metodos de Planejamento (Brasilia, DF). |
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Título: |
Subsidio ao plano indicativo da pesquisa agropecuaria - 1980/85. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Brasilia, 1979. |
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Volume: |
2v. |
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Idioma: |
Português |
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Palavras-Chave: |
Agricultural planning; Brasil; EMBRAPA. |
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Thesagro: |
Diretriz; Planejamento Agrícola. |
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Thesaurus Nal: |
Brazil. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00547nam a2200193 a 4500
001 1759515
005 1997-09-24
008 1979 bl uuuu 00u1 u #d
100 1 $aEMBRAPA. Departamento de Diretrizes e Metodos de Planejamento (Brasilia, DF).
245 $aSubsidio ao plano indicativo da pesquisa agropecuaria - 1980/85.
260 $aBrasilia, 1979.$c1979
300 $a2v.
490 $v2v.
650 $aBrazil
650 $aDiretriz
650 $aPlanejamento Agrícola
653 $aAgricultural planning
653 $aBrasil
653 $aEMBRAPA
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Registro original: |
Embrapa Hortaliças (CNPH) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Soja. |
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Data corrente: |
26/02/2014 |
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Data da última atualização: |
04/06/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
FAGERIA, N. K.; MOREIRA, A.; MORAES, L. A. C.; MORAES, M. F. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; ADONIS MOREIRA, CNPSO; LARISSA ALEXANDRA CARDOSO MORAES, CNPSO; M. F. MORAES. |
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Título: |
Nitrogen uptake and use efficiency in upland rice under two nitrogen sources. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Communications in Soil Science and Plant Analysis, New York, v. 45, n. 4, p. 461-469, 2014. |
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ISSN: |
0010-3624 |
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DOI: |
10.1080/00103624.2013.861907 |
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Idioma: |
Inglês |
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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. |
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Thesagro: |
Arroz; Microelemento; Nitrogênio; Nutriente; Oryza sativa; Solo. |
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Thesaurus NAL: |
Nutrient use efficiency; Rice. |
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Categoria do assunto: |
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P Recursos Naturais, Ciências Ambientais e da Terra |
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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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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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