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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
02/09/2011 |
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Data da última atualização: |
23/09/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
LOPES, M. N.; LACERDA, C. F. de; CÂNDIDO, M. J. D.; POMPEU, R. C. F. F.; SILVA, R. G. da; LOPES, J. W. B.; FERNANDES, F. R. B.; BEZERRA, F. M. L. |
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Afiliação: |
Marcos Neves Lopes, Universidade Federal do Ceará - UFC, Fortaleza, CE.; Claudivan Feitosa de Lacerda, UFC, Fortaleza, CE.; Magno José Duarte Cândido, UFC. Fortaleza, CE.; ROBERTO CLAUDIO FERNANDES F POMPEU, CNPC; Rodrigo Gregório da Silva, Instituto Federal de Educação, Ciência e Tecnologia - IFCE, Campus Avançado do Tauá, CE.; José Wellington Batista Lopes, UFC, Fortaleza, CE.; Francisco Ronaldo Belém Fernandes, UFC, Fortaleza, CE.; Francisco Marcus Lima Bezerra, UFC, Fortaleza, CE. |
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Título: |
Gas exchange in massai grass under five nitrogen fertilization levels during establishment and regrowth. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Zootecnia, v. 40, n. 9, p. 1862-1869, 2011. |
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Idioma: |
Português |
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Conteúdo: |
The objective of this study was to evaluate gas exchange in the massai grass during establishment and regrowth cycles in a greenhouse, using five nitrogen (N) fertilization levels. A completely randomized split-plot design of five nitrogen levels (0; 150; 300; 450 and 600 mg N?dm-3 of soil) was employed with the N levels as plots, and the cycles (establishment, regrowth 1 and 2) as subplots, evaluated with five replicates. We evaluated leaf transpiration (E), leaf temperature (TFOL), leaf photosynthesis rate (A), leaf carbon dioxide concentration (Ci), stomatal conductance (gs), photosynthesis/transpiration ratio (A/E), photosynthesis/conductance ratio (A/gs), chlorophyll relative index (CRI), and nitrogen sufficiency index (NSI). Growth cycles influenced all physiological characteristics, except for NSI. N fertilization levels affected TFOL, A, CRI and NSI variables, whereas for gs, E, Ci, A/E and A/gs it did not occur. A increased from 6.38 to 10.33 μmol?m-2. s-1, at levels 0 and 600 mg N?dm-3 of soil, respectively. Gas exchange in the massai grass was favored by nitrogen fertilization, since the cycles amended these characteristics of the grass. |
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Palavras-Chave: |
Ceará; Fortaleza; Variedade Massai. |
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Thesagro: |
Gramínea forrageira; Panicum maximum; Pastagem. |
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Thesaurus Nal: |
Brazil; Chlorophyll; Photosynthesis. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/42074/1/API-Gas-exchang-massai.pdf
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Marc: |
LEADER 02060naa a2200313 a 4500
001 1899510
005 2019-09-23
008 2011 bl uuuu u00u1 u #d
100 1 $aLOPES, M. N.
245 $aGas exchange in massai grass under five nitrogen fertilization levels during establishment and regrowth.
260 $c2011
520 $aThe objective of this study was to evaluate gas exchange in the massai grass during establishment and regrowth cycles in a greenhouse, using five nitrogen (N) fertilization levels. A completely randomized split-plot design of five nitrogen levels (0; 150; 300; 450 and 600 mg N?dm-3 of soil) was employed with the N levels as plots, and the cycles (establishment, regrowth 1 and 2) as subplots, evaluated with five replicates. We evaluated leaf transpiration (E), leaf temperature (TFOL), leaf photosynthesis rate (A), leaf carbon dioxide concentration (Ci), stomatal conductance (gs), photosynthesis/transpiration ratio (A/E), photosynthesis/conductance ratio (A/gs), chlorophyll relative index (CRI), and nitrogen sufficiency index (NSI). Growth cycles influenced all physiological characteristics, except for NSI. N fertilization levels affected TFOL, A, CRI and NSI variables, whereas for gs, E, Ci, A/E and A/gs it did not occur. A increased from 6.38 to 10.33 μmol?m-2. s-1, at levels 0 and 600 mg N?dm-3 of soil, respectively. Gas exchange in the massai grass was favored by nitrogen fertilization, since the cycles amended these characteristics of the grass.
650 $aBrazil
650 $aChlorophyll
650 $aPhotosynthesis
650 $aGramínea forrageira
650 $aPanicum maximum
650 $aPastagem
653 $aCeará
653 $aFortaleza
653 $aVariedade Massai
700 1 $aLACERDA, C. F. de
700 1 $aCÂNDIDO, M. J. D.
700 1 $aPOMPEU, R. C. F. F.
700 1 $aSILVA, R. G. da
700 1 $aLOPES, J. W. B.
700 1 $aFERNANDES, F. R. B.
700 1 $aBEZERRA, F. M. L.
773 $tRevista Brasileira de Zootecnia$gv. 40, n. 9, p. 1862-1869, 2011.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| 1. |  | LOPES, M. N.; LACERDA, C. F. de; CÂNDIDO, M. J. D.; POMPEU, R. C. F. F.; SILVA, R. G. da; LOPES, J. W. B.; FERNANDES, F. R. B.; BEZERRA, F. M. L. Gas exchange in massai grass under five nitrogen fertilization levels during establishment and regrowth. Revista Brasileira de Zootecnia, v. 40, n. 9, p. 1862-1869, 2011.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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