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| Registros recuperados : 26 | |
| 1. |  | RESENDE, A. S. de; TARRE, R. M.; REZENDE, C. de P.; BODDEY, R. M.; URQUIAGA, S.; ALVES, B. J. R. Quantificacao da FBN em Desmodium ovalifolium crescido no campo, utilizando-se as tecnicas de abundancia relativa de ureidos e de diluicao isotopica de 15N. In: CONGRESSO LATINO AMERICANO DE CIENCIA DO SOLO, 13.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 1.; SIMPOSIO BRASILEIRO SOBRE MICROBIOLOGIA DO SOLO, 4., ago. 1996, Aguas de Lindoia-SP. Resumos... Aguas de Lindoia, SP: USP / SLCS / SBCS, 1996. Comissao 3. Trabalho n.79. 1 CD-ROM.| Biblioteca(s): Embrapa Agrobiologia. |
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| 4. | | FERREIRA, E.; RESENDE, A.; QUESADA, D.; GALINDO, L.; MACEDO, R.; TARRÉ, R.; CAMPOS, D. V.; OLIVEIRA, O. C. de; ALVES, B. J. R.; BODDEY, R. M.; URQUIAGA, S. Avaliação do consumo de gramíneas e leguminosas por meio das fezes de bovinos, no período seco em condições de pastagens consorciadas na região de Uberlândia-MG. Seropédica: EMBRAPA-CNPAB, 1999. 4 p. (EMBRAPA-CNPAB. Pesquisa em Andamento, 29).| Biblioteca(s): Embrapa Agrobiologia; Embrapa Unidades Centrais. |
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| 5. | | MACEDO R.; TARRÉ, R. M.; FERREIRA, E.; REZENDE, C. de P.; PEREIRA, J. M.; CADISCH, G.; COSTA, J. R.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. Forage intake and botanical composition of feed for cattle fed Brachiaria/legume mixtures. Sci. Agric., Piracicaba, v. 67, n. 4, p.384-392.| Biblioteca(s): Embrapa Agrobiologia. |
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| 6. | | CANTARUTTI, R. B.; TARRÉ, R. M.; MACEDO, R. B.; REZENDE, C. de P.; PEREIRA, J. M.; FERREIRA, E.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. Forage legume presence and grazing intensity effect on nitrogen dynamics in brachiaria pastures in the South of Bahia, Brazil In: INTERNATIONAL GRASSLAND CONGRESS PROCEEDINGS, 24; INTERNATIONAL RANGELAND CONGRESS, 11, 2021 kentucky. Sustainable Use of Grassland and Rangeland Resources for Improved Livelihoods: proceeding...kentucky: University of kentucky, 2022.| Biblioteca(s): Embrapa Agrobiologia. |
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| 7. | | TARRE, R.; MACEDO, R.; CANTARUTTI, R. B.; REZENDE, C. D.; PEREIRA, J. M.; FERREIRA, E.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. The effect of the presence of a forage legume on nitrogen and carbon levels in soils under Brachiaria pastures in the Atlantic forest region of the South of Bahia, Brazil. Plant and Soil, Dordrecht, v. 234, n .1, p. 15-26, 2001.| Biblioteca(s): Embrapa Agrobiologia. |
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| 8. | | ALVES, B. J. R.; REZENDE, C. de P.; RESENDE, A. S.; MACEDO, R.; TARRE, R. M.; URQUIAGA, S.; BODDEY, R. M. Estimation of N2 fixation in Desmodium ovalifolium from the relative ureide abundance of stem solutes: Comparison with the 15N-dilution and an in situ soil core technique. Nutrient Cycling in Agroecosystems, v. 56, p. 177-193, 2000.| Biblioteca(s): Embrapa Agrobiologia. |
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| 9. | | FERREIRA, E.; LOPES, W.; MOTA, R. S. S.; TARRE, R.; MACEDO, R.; OLIVEIRA, O. C. de; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. Ciclagem de nitrogênio das fezes bovinas no periodo seco, em pastagem de Brachiaria decumbens Stapf. Prain. Fl., localizada no ecossistema de cerrado em Santo Antonio de Goias-Goias. In: REUNIÃO BRASILEIRA DE MANEJO E CONSERVAÇÃO DO SOLO E DA ÁGUA, 13., 2000, Ilhéus. Resumos... Ilhéus: CEPLAC/CEPEC, 2000. p. 791-792. CD ROM.| Biblioteca(s): Embrapa Agrobiologia. |
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| 10. | | BODDEY, R. M.; TARRÉ, R. M.; MACEDO, R. B.; REZENDE, C. de P.; PEREIRA, J. M.; ALVES, B. J. R.; URQUIAGA, S. Cycling of N and P in grass-alone (Brachiaria) and mixed grass/legume (Brachiaria/ desmodium ovalifolium) grazed pastures in the Atlantic Forest Region of Brazil. In: INTERNATIONAL GRASSLAND CONGRESS PROCEEDINGS, 24; INTERNATIONAL RANGELAND CONGRESS, 11, 2021 kentucky. Sustainable Use of Grassland and Rangeland Resources for Improved Livelihoods: proceeding...kentucky: University of kentucky, 2022.| Biblioteca(s): Embrapa Agrobiologia. |
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| 11. | | TARRÉ, R. M.; MACEDO, R.; REZENDE, C. de P.; PEREIRA, J. M.; URQUIAGA, S.; BODDEY, R. M.; ALVES, B. J. R. Cycling of P in mixed grass/legume and grass alone Brachiaria pastures in the Atlantic forest region of Brazil. In: INTERNATIONAL SYMPOSIUM PHOSPHORUS DYNAMICS IN SOIL-PLANT CONTINUUM, 3rd., 2006, Uberlândia. Proceedings... Uberlândia: Embrapa Milho e Sorgo, 2006. p. 206-207. Edited by: Vera M. C. Alves, Claudia T. Guimarães, Jurandir V. de Magalhães, Robert E. Schaffert, Antônio Marcos Coelho, Antônio F. de Castro Bahia Filho, Derli P. Santana.| Biblioteca(s): Embrapa Agrobiologia. |
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| 12. | | TARRÉ, R. M.; MACEDO, R. B.; CANTARUTTI, R. B.; REZENDE, C. de P.; PEREIRA, J. M.; FERREIRA, E.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. Carbon accumulation in soils under brachiaria pastures in the Atlantic Rorest region of the South of Bahia, Brazil. In: INTERNATIONAL GRASSLAND CONGRESS PROCEEDINGS, 24; INTERNATIONAL RANGELAND CONGRESS, 11, 2021 kentucky. Sustainable Use of Grassland and Rangeland Resources for Improved Livelihoods: proceeding...kentucky: University of kentucky. 2022.| Biblioteca(s): Embrapa Agrobiologia. |
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| 14. | | MATOS, P. S.; SILVA, C. F. da; PEREIRA, M. G.; SILVA, E. M. R. da; TARRÉ, R. M.; FRANCO, A. L. C.; ZONTA, E. Short-term modifications of mycorrhizal fungi, glomalin and soil attributes in a tropical agroforestry. Acta Oecologica, v. 114, 103815, May 2022.| Biblioteca(s): Embrapa Agrobiologia. |
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| 15. | | TARRÉ, R. M.; MACEDO, R.; REZENDE, C. de P.; RESENDE, A. S. de; RESENDE, A. S.; URQUIAGA, S.; ALVES, B. J. R. Variação sazonal da FBN em pastagem de Desmodium ovalifolium consorciada com Brachiaria humidicola, estimada pela abundância relativa de ureídos. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 33., 1996, Fortaleza. Forragicultura: anais. Fortaleza: SBZ, 1996. v. 2, p. 197-199.| Biblioteca(s): Embrapa Caprinos e Ovinos. |
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| 16. | | BODDEY, R. M.; ALVES, B. J. R.; URQUIAGA, S.; FERREIRA, E.; MACEDO, R. O.; OLIVEIRA, O. C.; PEREIRA, J. M.; REZENDE, C. de P.; TARRÉ, R. M.; VILELA, L. Avaliação do impacto da introdução de leguminosas forrageiras na produção e sustentabilidade de pastagens de Brachiaria através de estudos do ciclo de N. Seropédica: EMBRAPA-CNPAB, 1998. 9 p. (EMBRAPA-CNPAB. Documentos, 67).| Biblioteca(s): Embrapa Agrobiologia; Embrapa Agropecuária Oeste; Embrapa Rondônia; Embrapa Unidades Centrais. |
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| 17. | | CAMPOS, D. V. B. de; MACHADO, P. L. O. A.; MADARI, B. E.; TARRÉ, R.; MACEDO, R.; PINHEIRO, E. F. M.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M.; SANTOS, G. A. Fracionamento físico da matéria orgânica em argissolo sob capim elefante e braquiária após 2 e 4 anos da remoção da cobertura de floresta secundária no extremo sul da Bahia. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 30., 2005, Recife. Solos: sustentabilidade e qualidade ambiental. Recife: Sociedade Brasileira de Ciência do Solo, 2005. 4 p. CD ROM.| Biblioteca(s): Embrapa Agrobiologia. |
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| 18. | | BODDEY, R. M.; MACEDO, R.; TARRÉ, R. M.; FERREIRA, E.; OLIVEIRA, O. C. de; REZENDE, C. de P.; CANTARUTTI, R. B.; PEREIRA, J. M.; ALVES, B. J. R.; URQUIAGA, S. Nitrogen cycling in Brachiaria pastures: the key to understanding the process of pasture decline. Agriculture Ecosystems & Environment, Amsterdam, v. 103, p. 389-403, 2004.| Biblioteca(s): Embrapa Agrobiologia. |
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| 19. | | CANTARUTTI, R. B.; TARRE, R.; MACEDO, R.; CADISCH, G.; REZENDE, C. de P.; PEREIRA, J. M.; BRAGA, J. M.; GOMIDE, J. A.; FERREIRA, E.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. The effect of grazing intensity and the presence of a forage legume on nitrogen dynamics in Brachiaria pastures in the Atlantic forest region of the South of Bahia, Brazil. Nutrient Cycling in Agroecossytems, Netherlands, v. 64, p. 257-271, 2002.| Biblioteca(s): Embrapa Agrobiologia. |
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| 20. | | FERREIRA, E.; COELHO, C. H. M.; MOTA, R. S. S.; LOPES, W.; OLIVEIRA, I. P. de; TARRE, R.; MACEDO, R.; OLIVEIRA, O. C. de; RODRIGUES ALVES, B. J.; URQUIAGA, S.; BODDEY, R. M. Ciclagem de nitrogenio das fezes bovinas em pastagem de Brachiaria em area de cerrado em Goias, no periodo chuvoso do ano. In: REUNIAO BRAS. FERTILIDADE DO SOLO E NUTRICAO DE PLANTAS, 25.; REUNIAO BRASILEIRA SOBRE MICORRIZAS,8.; SIMPOSIO BRASILEIRO DE MICROBIOLOGIA DO SOLO, 6.; REUNIAO BRASILEIRA DE BIOLOGIA DO SOLO, 3., 2000, Santa Maria, RS. Fertbio 2000: biodinamica do solo. [S.l.: s.n.], 2000. nao paginado.| Biblioteca(s): Embrapa Cerrados. |
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| Registros recuperados : 26 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
29/12/1999 |
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Data da última atualização: |
31/05/2007 |
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Autoria: |
CANTARUTTI, R. B.; TARRE, R.; MACEDO, R.; CADISCH, G.; REZENDE, C. de P.; PEREIRA, J. M.; BRAGA, J. M.; GOMIDE, J. A.; FERREIRA, E.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. |
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Título: |
The effect of grazing intensity and the presence of a forage legume on nitrogen dynamics in Brachiaria pastures in the Atlantic forest region of the South of Bahia, Brazil. |
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Ano de publicação: |
2002 |
|
Fonte/Imprenta: |
Nutrient Cycling in Agroecossytems, Netherlands, v. 64, p. 257-271, 2002. |
|
Idioma: |
Inglês |
|
Conteúdo: |
It has been shown that with careful grazing management and addition of p and K. but not N. fertilisers Brachiaria pastures are able to maintain sustainable live weight gains over many years. However. standard on-farm practice. which generally involves high stocking rates. leads after a few years to pasture decline due mainly to N deficiency for grass regrowth. To generate an understanding of the mechanism of pasture decline and possible management options to mitigate this process. a study was performed in the Atlantic forest region of the south of Bahia state to study the N dynamics in pastures of Brachiaria humidicola subject to three different stocking rates of beef cattle. with and without the presence of the forage legume Desmodium ovalifolium. Despite the fact that the C:N ratio of the deposited litter was high (60 to 70) the rate of decomposition was very rapid (k --0.07 9 g-l day-1) and annual rates of N turnover through the litter pathway were between 105 and 170 kg N ha-1 year-1. In the grass-only pastures as stocking rate increased from 2 to 3 head ha -1. N recycled in the litter decreased by 11 %. but a further increase to 4 head ha-1 decreased N recycling by 30% suggesting that beyond a certain critical level higher grazing stocking rates would lead to pasture decline if there was no N addition. High stocking rates decreased the proportion of the legume in the sward. but at all rates the concentration of N in both the green and dead grass in the forage on offer and in the litter was higher in the mixed sward. The presence of the legume caused a decrease in the C:N ratio of the microbial biomass while both soil N minera1isation and nitrification increased. This increased rate of turnover of the microbia1 biomass and the contribution of N2 fixation to the legume resulted in large increases in the N recycled via litter deposition ranging from 42 to 155 kg N ha-1 year-1. MenosIt has been shown that with careful grazing management and addition of p and K. but not N. fertilisers Brachiaria pastures are able to maintain sustainable live weight gains over many years. However. standard on-farm practice. which generally involves high stocking rates. leads after a few years to pasture decline due mainly to N deficiency for grass regrowth. To generate an understanding of the mechanism of pasture decline and possible management options to mitigate this process. a study was performed in the Atlantic forest region of the south of Bahia state to study the N dynamics in pastures of Brachiaria humidicola subject to three different stocking rates of beef cattle. with and without the presence of the forage legume Desmodium ovalifolium. Despite the fact that the C:N ratio of the deposited litter was high (60 to 70) the rate of decomposition was very rapid (k --0.07 9 g-l day-1) and annual rates of N turnover through the litter pathway were between 105 and 170 kg N ha-1 year-1. In the grass-only pastures as stocking rate increased from 2 to 3 head ha -1. N recycled in the litter decreased by 11 %. but a further increase to 4 head ha-1 decreased N recycling by 30% suggesting that beyond a certain critical level higher grazing stocking rates would lead to pasture decline if there was no N addition. High stocking rates decreased the proportion of the legume in the sward. but at all rates the concentration of N in both the green and dead grass in the forage on offer a... Mostrar Tudo |
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Thesagro: |
Brachiaria; Leguminosa Forrageira. |
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Thesaurus NAL: |
forage legumes. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02805naa a2200289 a 4500
001 1624177
005 2007-05-31
008 2002 bl --- 0-- u #d
100 1 $aCANTARUTTI, R. B.
245 $aThe effect of grazing intensity and the presence of a forage legume on nitrogen dynamics in Brachiaria pastures in the Atlantic forest region of the South of Bahia, Brazil.
260 $c2002
520 $aIt has been shown that with careful grazing management and addition of p and K. but not N. fertilisers Brachiaria pastures are able to maintain sustainable live weight gains over many years. However. standard on-farm practice. which generally involves high stocking rates. leads after a few years to pasture decline due mainly to N deficiency for grass regrowth. To generate an understanding of the mechanism of pasture decline and possible management options to mitigate this process. a study was performed in the Atlantic forest region of the south of Bahia state to study the N dynamics in pastures of Brachiaria humidicola subject to three different stocking rates of beef cattle. with and without the presence of the forage legume Desmodium ovalifolium. Despite the fact that the C:N ratio of the deposited litter was high (60 to 70) the rate of decomposition was very rapid (k --0.07 9 g-l day-1) and annual rates of N turnover through the litter pathway were between 105 and 170 kg N ha-1 year-1. In the grass-only pastures as stocking rate increased from 2 to 3 head ha -1. N recycled in the litter decreased by 11 %. but a further increase to 4 head ha-1 decreased N recycling by 30% suggesting that beyond a certain critical level higher grazing stocking rates would lead to pasture decline if there was no N addition. High stocking rates decreased the proportion of the legume in the sward. but at all rates the concentration of N in both the green and dead grass in the forage on offer and in the litter was higher in the mixed sward. The presence of the legume caused a decrease in the C:N ratio of the microbial biomass while both soil N minera1isation and nitrification increased. This increased rate of turnover of the microbia1 biomass and the contribution of N2 fixation to the legume resulted in large increases in the N recycled via litter deposition ranging from 42 to 155 kg N ha-1 year-1.
650 $aforage legumes
650 $aBrachiaria
650 $aLeguminosa Forrageira
700 1 $aTARRE, R.
700 1 $aMACEDO, R.
700 1 $aCADISCH, G.
700 1 $aREZENDE, C. de P.
700 1 $aPEREIRA, J. M.
700 1 $aBRAGA, J. M.
700 1 $aGOMIDE, J. A.
700 1 $aFERREIRA, E.
700 1 $aALVES, B. J. R.
700 1 $aURQUIAGA, S.
700 1 $aBODDEY, R. M.
773 $tNutrient Cycling in Agroecossytems, Netherlands$gv. 64, p. 257-271, 2002.
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