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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
02/11/1993 |
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Data da última atualização: |
28/02/2008 |
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Autoria: |
SERRANO, E. de O.; GOMES, N. M. S.; BEZERRA, J. E.; FRANCO, C. F. de O. |
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Afiliação: |
EMBRAPA- CNPA. |
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Título: |
Bibliografia sinalitica sobre a cultura do sisal (Agave sp.) |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Brasilia:EMBRAPA - DDT, 1983. |
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Páginas: |
170p. |
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Idioma: |
Português |
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Conteúdo: |
Alimentacao animal;Botanica; Economia; Fibras; Industrializacao; Fisiologia; Fitossanidade; Melhoramento; Genetica; Producao; Solos; |
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Palavras-Chave: |
Bibliografia. |
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Thesagro: |
Agave; Sisal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00621nam a2200193 a 4500
001 1264472
005 2008-02-28
008 1983 bl uuuu u00u1 u #d
100 1 $aSERRANO, E. de O.
245 $aBibliografia sinalitica sobre a cultura do sisal (Agave sp.)
260 $aBrasilia:EMBRAPA - DDT$c1983
300 $a170p.
520 $aAlimentacao animal;Botanica; Economia; Fibras; Industrializacao; Fisiologia; Fitossanidade; Melhoramento; Genetica; Producao; Solos;
650 $aAgave
650 $aSisal
653 $aBibliografia
700 1 $aGOMES, N. M. S.
700 1 $aBEZERRA, J. E.
700 1 $aFRANCO, C. F. de O.
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Registro original: |
Embrapa Algodão (CNPA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
31/07/2012 |
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Data da última atualização: |
16/02/2023 |
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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: |
SANTOS, P. M.; THORNTON, B.; CORSI, M. |
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Afiliação: |
PATRICIA MENEZES SANTOS, CPPSE; BARRY THORNTON, THE JAMES HUTTON INSTITUE/ ABERDEEN; MOACIR CORSI, PROF. DO DEPARTAMENTO DE ZOOTECNIA - ESALQ/PIRACICABA. |
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Título: |
Adaptation of the C4 grass Panicum maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation patterns. |
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Ano de publicação: |
2012 |
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Fonte/Imprenta: |
Scientia Agricola, v. 69, n. 5, p. 293-299, sep./oct. 2012. |
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DOI: |
https://doi.org/10.1590/S0103-90162012000500002 |
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Idioma: |
Inglês |
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Conteúdo: |
Dry mass production and persistence of Panicum maximum pastures depends on nitrogen supply. Defoliation influences N uptake and allocation patterns yet its effects on plasticity of N dynamics in P. maximum have not been investigated. Stable isotopes of N (15N) were used in order to test the hypothesis that defoliation in terms of proportion of the leaf area removed effects N mobilisation, uptake and allocation patterns in P. maximum. The plants were initially cut weekly to a height of either 0.15 m or 0.30 m for seven weeks. Eight weeks after the first defoliation, all plants were defoliated for a final time to remove 0, 25, 50, 75 or 100 % of the area of each individual leaf blade of the main tiller. Root N uptake was reduced when all leaf area was removed, but more lenient defoliation improved N uptake due to a positive effect on specific N uptake. Young leaves, side tillers and roots were the main sinks for N from root uptake. Roots of P. maximum became a net source of N for mobilisation immediately after severe defoliation. Root uptake was the main source of N for new growth in P. maximum plants. Allocation pattern of mobilised N was different from that of N derived from root uptake. It was concluded that adaptation of P. maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation, but changes in N dynamics did not offset negative impacts of complete defoliation of the plants. |
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Palavras-Chave: |
Clipping height; Guineagrass; Organic reserves; Tropical grass. |
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Thesaurus NAL: |
regrowth. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://www.alice.cnptia.embrapa.br/alice/bitstream/doc/930067/1/PROCI2012.00099.pdf
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Marc: |
LEADER 02144naa a2200217 a 4500
001 1930067
005 2023-02-16
008 2012 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0103-90162012000500002$2DOI
100 1 $aSANTOS, P. M.
245 $aAdaptation of the C4 grass Panicum maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation patterns.$h[electronic resource]
260 $c2012
520 $aDry mass production and persistence of Panicum maximum pastures depends on nitrogen supply. Defoliation influences N uptake and allocation patterns yet its effects on plasticity of N dynamics in P. maximum have not been investigated. Stable isotopes of N (15N) were used in order to test the hypothesis that defoliation in terms of proportion of the leaf area removed effects N mobilisation, uptake and allocation patterns in P. maximum. The plants were initially cut weekly to a height of either 0.15 m or 0.30 m for seven weeks. Eight weeks after the first defoliation, all plants were defoliated for a final time to remove 0, 25, 50, 75 or 100 % of the area of each individual leaf blade of the main tiller. Root N uptake was reduced when all leaf area was removed, but more lenient defoliation improved N uptake due to a positive effect on specific N uptake. Young leaves, side tillers and roots were the main sinks for N from root uptake. Roots of P. maximum became a net source of N for mobilisation immediately after severe defoliation. Root uptake was the main source of N for new growth in P. maximum plants. Allocation pattern of mobilised N was different from that of N derived from root uptake. It was concluded that adaptation of P. maximum to defoliation is related to plasticity of N uptake, mobilisation and allocation, but changes in N dynamics did not offset negative impacts of complete defoliation of the plants.
650 $aregrowth
653 $aClipping height
653 $aGuineagrass
653 $aOrganic reserves
653 $aTropical grass
700 1 $aTHORNTON, B.
700 1 $aCORSI, M.
773 $tScientia Agricola$gv. 69, n. 5, p. 293-299, sep./oct. 2012.
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Embrapa Pecuária Sudeste (CPPSE) |
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