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Registro Completo |
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Biblioteca(s): |
Embrapa Agrossilvipastoril. |
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Data corrente: |
26/01/2018 |
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Data da última atualização: |
26/01/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PEDREIRA, C. G. S.; SILVA, V. J.; PEDREIRA, B. C. e; SOLLENBERGER, L. E. |
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Afiliação: |
CARLOS G. S. PEDREIRA, USP-ESALQ; VALDSON J. SILVA, USP-ESALQ; BRUNO CARNEIRO E PEDREIRA, CPAMT; LYNN E. SOLLENBERGER, UNIVERSITY OF FLORIDA. |
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Título: |
Herbage Accumulation and Organic Reserves of Palisadegrass in Response to Grazing Management based on Canopy Targets. |
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Ano de publicação: |
2017 |
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Fonte/Imprenta: |
Crop Science, v. 57, n. 4, p. 2283-2293, 2017. |
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DOI: |
http://dx.doi.org/10.2135/cropsci2016.11.0957 |
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Idioma: |
Inglês |
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Conteúdo: |
Improved grazing management can increase the output of many tropical forage?livestock systems. Adjusted grazing management techniques have been proposed for producers that are willing to exploit the growth potential of available forage resources. The objective of this research was to describe and explain variations in herbage accumulation dynamics and organic reserves of cultivar Xaraés palisadegrass [Brachiaria brizantha (Hochst. ex A. Rich.) Stapf syn. Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] under three grazing managements during spring and summer growing seasons of 2 yr. Pastures were grazed every 28 d (28-d) or at intervals defined by two levels of pre-graze canopy light interception (LI). These LI-based treatments are referred to as ?target grazing? (TG) at 95% LI and ?delayed grazing? (DG) at ³97.5% LI. Pastures managed using TG and 28-d showed a similar herbage accumulation rate (HAR) (112 kg DM ha?1 d?1) (P > 0.05), both lesser than DG (141 kg DM ha?1 d?1). Although TG and 28-d showed similar daily HAR, stem proportion in the stubble was more variable for 28-d over the growing season. Stem proportion in the stubble was greater for DG (43.8%) and 28-d (40.4%) than for TG (34.2%). The TG management showed greater total non-structural carbohydrate (TNC) pools in roots (238 g m?2) than DG (136 g m?2) and 28-d (199 g m?2), suggesting less dependency of organic reserves. The TG was optimal strategy for intensive grazing management of Xaraés palisadegrass pastures. MenosImproved grazing management can increase the output of many tropical forage?livestock systems. Adjusted grazing management techniques have been proposed for producers that are willing to exploit the growth potential of available forage resources. The objective of this research was to describe and explain variations in herbage accumulation dynamics and organic reserves of cultivar Xaraés palisadegrass [Brachiaria brizantha (Hochst. ex A. Rich.) Stapf syn. Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] under three grazing managements during spring and summer growing seasons of 2 yr. Pastures were grazed every 28 d (28-d) or at intervals defined by two levels of pre-graze canopy light interception (LI). These LI-based treatments are referred to as ?target grazing? (TG) at 95% LI and ?delayed grazing? (DG) at ³97.5% LI. Pastures managed using TG and 28-d showed a similar herbage accumulation rate (HAR) (112 kg DM ha?1 d?1) (P > 0.05), both lesser than DG (141 kg DM ha?1 d?1). Although TG and 28-d showed similar daily HAR, stem proportion in the stubble was more variable for 28-d over the growing season. Stem proportion in the stubble was greater for DG (43.8%) and 28-d (40.4%) than for TG (34.2%). The TG management showed greater total non-structural carbohydrate (TNC) pools in roots (238 g m?2) than DG (136 g m?2) and 28-d (199 g m?2), suggesting less dependency of organic reserves. The TG was optimal strategy for intensive grazing management of Xaraés palisadegrass pas... Mostrar Tudo |
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Palavras-Chave: |
Forage-livestock systems. |
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Thesagro: |
Brachiaria Brizantha. |
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Thesaurus Nal: |
Canopy; Grazing management; Urochloa brizantha. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02262naa a2200229 a 4500
001 2086507
005 2018-01-26
008 2017 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.2135/cropsci2016.11.0957$2DOI
100 1 $aPEDREIRA, C. G. S.
245 $aHerbage Accumulation and Organic Reserves of Palisadegrass in Response to Grazing Management based on Canopy Targets.$h[electronic resource]
260 $c2017
520 $aImproved grazing management can increase the output of many tropical forage?livestock systems. Adjusted grazing management techniques have been proposed for producers that are willing to exploit the growth potential of available forage resources. The objective of this research was to describe and explain variations in herbage accumulation dynamics and organic reserves of cultivar Xaraés palisadegrass [Brachiaria brizantha (Hochst. ex A. Rich.) Stapf syn. Urochloa brizantha (Hochst. ex A. Rich.) R.D. Webster] under three grazing managements during spring and summer growing seasons of 2 yr. Pastures were grazed every 28 d (28-d) or at intervals defined by two levels of pre-graze canopy light interception (LI). These LI-based treatments are referred to as ?target grazing? (TG) at 95% LI and ?delayed grazing? (DG) at ³97.5% LI. Pastures managed using TG and 28-d showed a similar herbage accumulation rate (HAR) (112 kg DM ha?1 d?1) (P > 0.05), both lesser than DG (141 kg DM ha?1 d?1). Although TG and 28-d showed similar daily HAR, stem proportion in the stubble was more variable for 28-d over the growing season. Stem proportion in the stubble was greater for DG (43.8%) and 28-d (40.4%) than for TG (34.2%). The TG management showed greater total non-structural carbohydrate (TNC) pools in roots (238 g m?2) than DG (136 g m?2) and 28-d (199 g m?2), suggesting less dependency of organic reserves. The TG was optimal strategy for intensive grazing management of Xaraés palisadegrass pastures.
650 $aCanopy
650 $aGrazing management
650 $aUrochloa brizantha
650 $aBrachiaria Brizantha
653 $aForage-livestock systems
700 1 $aSILVA, V. J.
700 1 $aPEDREIRA, B. C. e
700 1 $aSOLLENBERGER, L. E.
773 $tCrop Science$gv. 57, n. 4, p. 2283-2293, 2017.
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Embrapa Agrossilvipastoril (CPAMT) |
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| Registros recuperados : 49 | |
| 9. |  | PEDREIRA, C. G. S.; PEDREIRA, B. C. e. Manejo de pastagens tropicais para intensificação da produção. IN: SIMPÓSIO DE PECUÁRIA INTEGRADA, 1., 2014, Sinop, MT. Intensificação da produção animal em pastagens: Anais... Sinop, MT: Embrapa, 2014. 294 p. Editores Bruno Carneiro e Pedreira, Dalton Henrique Pereira, Douglas dos Santos Pina, Roberta Aparecida Carnevalli, Luciano Bastos Lopes| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Agrossilvipastoril. |
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| 14. | | TONATO, F.; PEDREIRA, B. C. e; PEDREIRA, C. G. S.; PEQUENO, D. N. L. Aveia preta e azevém anual colhidos por interceptação de luz ou intervalo fixo de tempo em sistemas integrados de agricultura e pecuária no Estado de São Paulo. Ciência Rural, Santa Maria, v. 44, n. 1, p. 104-110, jan, 2014.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Agrossilvipastoril; Embrapa Amazônia Ocidental. |
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| 17. | | BRAGA, G. J.; MELLO, A. C. L. de; PEDREIRA, C. G. S.; MEDEIROS, H. R. de. Fotossíntese e taxa diária de produção de forragem em pastagens de capim-tanzânia sob lotação intermitente. Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 1, p. 84-91, jan. 2009. Título em inglês: Photosynthesis and daily forage productivity of Tanzania guinea grass pastures under rotational stocking.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 19. | | BRAGA, G. J.; PEDREIRA, C. G. S.; HERLING, V. R.; LUZ, P. H. de C. Eficiência de pastejo de capim-marandu submetido a diferentes ofertas de forragem Pesquisa Agropecuária Brasileira, Brasília, DF, v. 42, n. 11, p. 1641-1649, nov. 2007 Título em inglês: Grazing efficiency on marandu palisadegrass as affected by herbage allowance.| Biblioteca(s): Embrapa Unidades Centrais. |
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| 20. | | MARIN, F. R.; PILAU, F. G.; SPOLADOR, H. F. S.; OTTO, R.; PEDREIRA, C. G. S. Intensificação sustentável da agricultura brasileira Cenários para 2050. Revista de Política Agrícola, Brasília, DF, ano 25, n. 3, p. 108-124, jul./ago/set. 2016.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 49 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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