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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
29/12/1999 |
Data da última atualização: |
31/05/2007 |
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. |
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. |
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 |
Thesagro: |
Brachiaria; Leguminosa Forrageira. |
Thesaurus Nal: |
forage legumes. |
Categoria do assunto: |
-- |
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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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Registros recuperados : 25 | |
2. | | PEREIRA, J. M.; REZENDE, C. de P.; EUCLIDES, V. P. B.; VALLE, C. B. do; BORGES, A. M. F. Avaliação de novos acessos de "Brachiaria brizanta" no Sul da Bahia. 1. Produção animal. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. A produção animal e a segurança alimentar: anais dos simpósios e dos resumos. Campo Grande, MS: Sociedade Brasileira de Zootecnia: Embrapa Gado de Corte, 2004. 4 p. FORR 270. 1 CD-ROM. CNPGC.Biblioteca(s): Embrapa Gado de Corte. |
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3. | | PEREIRA, J. M.; REZENDE C. de P.; MAGALHÃES, A. F.; ALVES, B. J. R.; BODDEY, R. M. Altura de pastejo, características do pasto e produção animal em pastagens formadas por três cultivares de Urochloa humidicola, Agrotrópica, v. 34, n. 1, p.59-66, 2022.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 4 |
Biblioteca(s): Embrapa Agrobiologia. |
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4. | | 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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6. | | SANTOS, C. A. dos; REZENDE, C. de P.; PINHEIRO, E. F. M.; PEREIRA, J. M.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M. Changes in soil carbon stocks after land-use change from native vegetation to pastures in the Atlantic Forest Region of Brazil. Geoderma, v. 337, p. 394-401, 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
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7. | | 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.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Agrobiologia. |
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8. | | URQUIAGA, S.; ALVES, B. J. R.; BODDEY, R. M.; FERREIRA, E.; MIRANDA, C. H. B.; OLIVEIRA, O. C.; PEREIRA, J. M.; REZENDE, C. de P. Caracterização de degradação de pastagens e avaliação de técnicas de recuperação usando-se leguminosas forrageiras. Seropédica: EMBRAPA-CNPAB, 1998. 18 p. (EMBRAPA-CNPAB. Documentos, 66).Biblioteca(s): Embrapa Agrobiologia. |
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9. | | URQUIAGA, S.; ALVES, B. J. R.; BODDEY, R. M.; FERREIRA, E.; MIRANDA, C. H. B.; OLIVEIRA, O. C. de; FERREIRA, J. M.; REZENDE, C. de P. Caracterizacao de degradacao de pastagens e avaliacao de tecnicas de recuperacao usando-se leguminosas forragerias. Seropedica: EMBRAPA-CNPAB, 1998. 21p. (EMBRAPA-CNPAB. Documentos, 66). CNPGC.Biblioteca(s): Embrapa Gado de Corte. |
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11. | | 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.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Agrobiologia. |
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12. | | 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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13. | | REZENDE, C. de P.; PEREIRA, J. M.; MAGALHÃES, A. B.; HOMEM, B. G. C.; BODDEY, R. M.; ALVES, B. J. R. Desempenho de novilhas em pastagens formadas pelos capins tifton 85, xaraés e mombaça, sob lotação rotativa. Agrotrópica, v. 33, n. 3, p. 197-204, 2021.Tipo: Artigo em Periódico Indexado |
Biblioteca(s): Embrapa Agrobiologia. |
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14. | | SANTOS, C. A. dos; RODRIGUES, P. do R.; REZENDE, C. de P.; BODDEY, R. M.; SALGADO, L. S.; ALVES, B. J. R. Fator de emissão de óxido nitroso de excretas bovinas derivadas de diferentes manejos de pastagens de braquiária. In: SEMANA CIENTÍFICA JOHANNA DÖBEREINER, 17., 2017, Seropédica. Ciência e inovação transformando a sociedade. Seropédica: Embrapa Agrobiologia, 2017.Tipo: Resumo em Anais de Congresso |
Biblioteca(s): Embrapa Agrobiologia. |
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15. | | 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.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Agrobiologia. |
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16. | | 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.Tipo: Artigo em Anais de Congresso |
Biblioteca(s): Embrapa Agrobiologia. |
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17. | | 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. |
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18. | | ALECRIM, F. B.; ALVES, B. J. R.; REZENDE, C. DE p.; BODDEY, R. M.; NÓBREGA, G. N.; CESÁRIO, F. V.; SOBRAL, B. S.; LEITE, F. F. G. D.; PEREIRA, C. R.; RODRIGUES, R. DE A. R. The influence of tropical pasture improvement on animal performance, nitrogen cycling, and greenhouse gas emissions in the Brazilian Atlantic Forest. Australian Journal of Crop Science, v. 17, n. 4, p. 392-399, 2023.Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
Biblioteca(s): Embrapa Agrobiologia. |
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19. | | PEREIRA, J. M.; REZENDE, C. de P.; BORGES, A. M. F.; HOMEM, A. G. C.; CASAGRANDE, D. R.; MACEDO, T. M.; ALVES, B. J. R.; SANTANNA, S. A. C. de; URQUIAGA, S.; BODDEY, R. M. Production of beef cattle grazing on Brachiaria brizantha (Marandu grass)-Arachis pintoi (forage peanut cv. Belomonte) mixtures exceeded that on grass monocultures fertilized with .120 kg N/ha. Grass and Forage Science, v. 75, n. 1, p. 28-36, 2020.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
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20. | | SANTOS, C. A. dos; MONTEIRO, R. C.; HOMEM, B. G. C.; SALGADO, L. S.; CASAGRANDE, D. R.; PEREIRA, J. M.; REZENDE, C. de P; ALVES, B. J. R.; BODDEY, R. M. Productivity of beef cattle grazing Brachiaria brizantha cv. Marandu with and without nitrogen fertilizer application or mixed pastures with the legume Desmodium ovalifolium. Grass and Forage Science, v. 78, n. 1, p. 147-160, 2023.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
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Registros recuperados : 25 | |
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Nenhum registro encontrado para a expressão de busca informada. |
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