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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte; Embrapa Semiárido. |
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Data corrente: |
11/12/1997 |
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Data da última atualização: |
17/07/2014 |
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Autoria: |
ALCOFORADO FILHO, F. G. |
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Afiliação: |
EMBRAPA-CPAMN. |
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Título: |
Aspectos gerais da fitossociologia de caatinga e a degradacao ambiental no semi-arido. |
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Ano de publicação: |
1995 |
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Fonte/Imprenta: |
In: REUNIAO DE PESQUISA DO CCA, 4., 1995, Teresina. Anais.... Teresina: UFPI, 1995. p. 14-24. |
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Idioma: |
Português |
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Conteúdo: |
Os estudos floristicos e fitossociologicos sao fundamentais para futuras classificacoes da vegetacao de caatinga, para o conhecimento da ecologia das comunidades vegetais, para o desenvolvimento da ecologia das comunidades vegetais, para o desenvolvimento de propostas e estrategias visando a conservacao e utilizacao de areas remanescentes de caatingas. Neste trabalho sao apresentados alguns aspectos da fitossociologia de modo geral e das caatingas em particular, alem de abordar a importancia socio-ecocnomica deste ecossistema. |
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Palavras-Chave: |
Brasil; Degradacao; Fitossociologia; Meio-ambiente; Recursos natuarais; Regiao semi-arida; Semi-arido. |
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Thesagro: |
Caatinga; Ecologia; Meio Ambiente. |
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Categoria do assunto: |
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X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01233naa a2200241 a 4500
001 1049353
005 2014-07-17
008 1995 bl uuuu u00u1 u #d
100 1 $aALCOFORADO FILHO, F. G.
245 $aAspectos gerais da fitossociologia de caatinga e a degradacao ambiental no semi-arido.
260 $c1995
520 $aOs estudos floristicos e fitossociologicos sao fundamentais para futuras classificacoes da vegetacao de caatinga, para o conhecimento da ecologia das comunidades vegetais, para o desenvolvimento da ecologia das comunidades vegetais, para o desenvolvimento de propostas e estrategias visando a conservacao e utilizacao de areas remanescentes de caatingas. Neste trabalho sao apresentados alguns aspectos da fitossociologia de modo geral e das caatingas em particular, alem de abordar a importancia socio-ecocnomica deste ecossistema.
650 $aCaatinga
650 $aEcologia
650 $aMeio Ambiente
653 $aBrasil
653 $aDegradacao
653 $aFitossociologia
653 $aMeio-ambiente
653 $aRecursos natuarais
653 $aRegiao semi-arida
653 $aSemi-arido
773 $tIn: REUNIAO DE PESQUISA DO CCA, 4., 1995, Teresina. Anais.... Teresina: UFPI, 1995. p. 14-24.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
03/06/2023 |
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Data da última atualização: |
03/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SANTOS, C. A. dos; OLIVEIRA, A. F. de; MOREIRA, E. D. S.; GONÇALVES, L. C.; VIANA, M. C. M.; GONTIJO NETO, M. M.; LANA, A. M. Q. |
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Afiliação: |
CLAUDINEI ALVES DOS SANTOS, Universidade Federal de Minas Gerais; ALAN FIGUEIREDO DE OLIVEIRA, Universidade Federal de Minas Gerais; ELWIRA DAPHINN SILVA MOREIRA, Universidade Federal de Minas Gerais; LÚCIO CARLOS GONÇALVES, Universidade Federal de Minas Gerais; MARIA CELUTA MACHADO VIANA, EPAMIG; MIGUEL MARQUES GONTIJO NETO, CNPMS; ÂNGELA MARIA QUINTÃO LANA, Universidade Federal de Minas Gerais. |
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Título: |
Influence of shade on productivity and nutritional value of Urochloa decumbens in silvopastoral systems using different spatial arrangements of eucalyptus cultivars. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Tropical Grasslands - Forrajes Tropicales, v. 11, n. 2, p. 169-182, 2023. |
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DOI: |
http://doi.org/10.17138/TGFT(11)169-182 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ?GG100?, ?I144? or ?VM58?. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 ?mol/m2 /s in full sun compared with a mean of 715 ?mol/m2 /s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These results indicate that in systems where the main objective is animal production, spacing between tree rows greater than 20 m should be used to provide sufficient high-quality grass. MenosThis study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ?GG100?, ?I144? or ?VM58?. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 ?mol/m2 /s in full sun compared with a mean of 715 ?mol/m2 /s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These res... Mostrar Tudo |
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Palavras-Chave: |
Campos tropicais; Integração pecuária-floresta; Sistema integrado; Sistema silvipastoril. |
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Thesagro: |
Capim Brachiaria; Composição Química; Eucalipto; Sombreamento. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154196/1/Influence-of-shade-on-productivity-and-nutritional-value.pdf
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Marc: |
LEADER 02707naa a2200301 a 4500
001 2154196
005 2023-06-03
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.17138/TGFT(11)169-182$2DOI
100 1 $aSANTOS, C. A. dos
245 $aInfluence of shade on productivity and nutritional value of Urochloa decumbens in silvopastoral systems using different spatial arrangements of eucalyptus cultivars.$h[electronic resource]
260 $c2023
520 $aThis study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ?GG100?, ?I144? or ?VM58?. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 ?mol/m2 /s in full sun compared with a mean of 715 ?mol/m2 /s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These results indicate that in systems where the main objective is animal production, spacing between tree rows greater than 20 m should be used to provide sufficient high-quality grass.
650 $aCapim Brachiaria
650 $aComposição Química
650 $aEucalipto
650 $aSombreamento
653 $aCampos tropicais
653 $aIntegração pecuária-floresta
653 $aSistema integrado
653 $aSistema silvipastoril
700 1 $aOLIVEIRA, A. F. de
700 1 $aMOREIRA, E. D. S.
700 1 $aGONÇALVES, L. C.
700 1 $aVIANA, M. C. M.
700 1 $aGONTIJO NETO, M. M.
700 1 $aLANA, A. M. Q.
773 $tTropical Grasslands - Forrajes Tropicales$gv. 11, n. 2, p. 169-182, 2023.
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Embrapa Milho e Sorgo (CNPMS) |
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