|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia. |
Data corrente: |
09/11/2021 |
Data da última atualização: |
09/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
DEPABLOS, L.; HOMEM, B. G. C.; FERREIRA, I. M.; BERNARDES, T. F.; BODDEY, R. M.; LARA, M. A. S.; CASAGRANDE, D. R. |
Afiliação: |
LUIS DEPABLOS, UNIVERSIDAD CENTRAL DE VENEZUELA; BRUNO G. C. HOMEM, UFLA; IGOR M. FERREIRA, UFLA; THIAGO F. BERNARDES, UFLA; ROBERT MICHAEL BODDEY, CNPAB; MÁRCIO A. S. LARA, UFLA; DANIEL R. CASAGRANDE, UFLA. |
Título: |
Nitrogen cycling in tropical grass-legume pastures managed under canopy light interception. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, V. 121,p. 51-67, 2021. |
ISSN: |
1385-1314 |
DOI: |
https://doi.org/10.1007/s10705-021-10160-7 |
Idioma: |
Inglês |
Conteúdo: |
In grass-legume pastures, grazing management strategies are an essential factor affecting nitrogen (N) cycling. This study assessed the impact of grazing management on N cycling in rotationally-stocked mixed pastures of ?Marandu? palisadegrass (Brachiaria brizantha) and ?Comum? calopo (Calopogonium mucunoides). Treatments included three grazing management strategies, defined by interruption of the rest period when the canopy reached 90 (90LI), 95 (95LI) and 100% (100LI) of the interception of photosynthetically active radiation. A 2-yr experimental period was adopted. Plant litter responses, forage intake and livestock excretion were evaluated. No differences between grazing management were obtained for existing (294 g OM m−2) and deposited litter (6.7 g OM m−2 d−1, P > 0.10). Compared to the dry season, the litter decomposition rate increased 24.0%, and the half-life decreased 37.8% in the rainy season (P < 0.10). The N cycling via litter (553 g ha−1 d−1) was similar in all grazing management (P > 0.10). Less frequent defoliation (100LI) resulted in reduced proportion of legume intake (P < 0.10, 94.4 vs. 168.5 g kg−1; an average of 90LI and 95LI, respectively), lower N intake (123.1 vs. 194.1 g animal unit−1 d−1) and a lower input of N from biological fixation (73.2 vs. 97.8 kg ha−1 yr−1). Less frequent defoliation should be avoided because it reduces the N intake and N retained by animals, which caused a reduction in N utilisation efficiency by heifers. Thus, 95% light interception is the maximum limit to interrupt the regrowth in palisadegrass-calopo pastures. MenosIn grass-legume pastures, grazing management strategies are an essential factor affecting nitrogen (N) cycling. This study assessed the impact of grazing management on N cycling in rotationally-stocked mixed pastures of ?Marandu? palisadegrass (Brachiaria brizantha) and ?Comum? calopo (Calopogonium mucunoides). Treatments included three grazing management strategies, defined by interruption of the rest period when the canopy reached 90 (90LI), 95 (95LI) and 100% (100LI) of the interception of photosynthetically active radiation. A 2-yr experimental period was adopted. Plant litter responses, forage intake and livestock excretion were evaluated. No differences between grazing management were obtained for existing (294 g OM m−2) and deposited litter (6.7 g OM m−2 d−1, P > 0.10). Compared to the dry season, the litter decomposition rate increased 24.0%, and the half-life decreased 37.8% in the rainy season (P < 0.10). The N cycling via litter (553 g ha−1 d−1) was similar in all grazing management (P > 0.10). Less frequent defoliation (100LI) resulted in reduced proportion of legume intake (P < 0.10, 94.4 vs. 168.5 g kg−1; an average of 90LI and 95LI, respectively), lower N intake (123.1 vs. 194.1 g animal unit−1 d−1) and a lower input of N from biological fixation (73.2 vs. 97.8 kg ha−1 yr−1). Less frequent defoliation should be avoided because it reduces the N intake and... Mostrar Tudo |
Palavras-Chave: |
BNF; Efoliation frequency; Marandu palisadegrass. |
Thesagro: |
Capim Urochloa. |
Thesaurus Nal: |
Excreta. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02532naa a2200277 a 4500 001 2135955 005 2021-11-09 008 2021 bl uuuu u00u1 u #d 022 $a1385-1314 024 7 $ahttps://doi.org/10.1007/s10705-021-10160-7$2DOI 100 1 $aDEPABLOS, L. 245 $aNitrogen cycling in tropical grass-legume pastures managed under canopy light interception.$h[electronic resource] 260 $c2021 520 $aIn grass-legume pastures, grazing management strategies are an essential factor affecting nitrogen (N) cycling. This study assessed the impact of grazing management on N cycling in rotationally-stocked mixed pastures of ?Marandu? palisadegrass (Brachiaria brizantha) and ?Comum? calopo (Calopogonium mucunoides). Treatments included three grazing management strategies, defined by interruption of the rest period when the canopy reached 90 (90LI), 95 (95LI) and 100% (100LI) of the interception of photosynthetically active radiation. A 2-yr experimental period was adopted. Plant litter responses, forage intake and livestock excretion were evaluated. No differences between grazing management were obtained for existing (294 g OM m−2) and deposited litter (6.7 g OM m−2 d−1, P > 0.10). Compared to the dry season, the litter decomposition rate increased 24.0%, and the half-life decreased 37.8% in the rainy season (P < 0.10). The N cycling via litter (553 g ha−1 d−1) was similar in all grazing management (P > 0.10). Less frequent defoliation (100LI) resulted in reduced proportion of legume intake (P < 0.10, 94.4 vs. 168.5 g kg−1; an average of 90LI and 95LI, respectively), lower N intake (123.1 vs. 194.1 g animal unit−1 d−1) and a lower input of N from biological fixation (73.2 vs. 97.8 kg ha−1 yr−1). Less frequent defoliation should be avoided because it reduces the N intake and N retained by animals, which caused a reduction in N utilisation efficiency by heifers. Thus, 95% light interception is the maximum limit to interrupt the regrowth in palisadegrass-calopo pastures. 650 $aExcreta 650 $aCapim Urochloa 653 $aBNF 653 $aEfoliation frequency 653 $aMarandu palisadegrass 700 1 $aHOMEM, B. G. C. 700 1 $aFERREIRA, I. M. 700 1 $aBERNARDES, T. F. 700 1 $aBODDEY, R. M. 700 1 $aLARA, M. A. S. 700 1 $aCASAGRANDE, D. R. 773 $tNutrient Cycling in Agroecosystems, V. 121,p. 51-67, 2021.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
Registros recuperados : 17 | |
5. | | MARTUSCELLO, J. A.; FONSECA, D. M.; NORONHA, D.; CUNHA, N. D. F. V. da; MOREIRA, L. de M.; SANTOS, P. M.; NASCIMENO JÚNIOR, D.; CASAGRANDE, D. R. Morfogênese de capim-Massai (Panicum maximum) submetido a diferentes doses de nitrogênio. In: REUNIÃO ANUAL DA SOCIEDADE BRASILEIRA DE ZOOTECNIA, 41., 2004, Campo Grande, MS. Resumos... Campo Grande: SBZ, 2004. 5 f. 1CD-ROM.Biblioteca(s): Embrapa Pecuária Sudeste. |
| |
7. | | GOMES, F. K.; OLIVEIRA, M. D. B.; HOMEM, B. G. C.; BODDEY, R. M.; BERNARDES, T. F.; GIONGELLI, M. P.; LARA, M. A. S.; CASAGRANDE, D. R. Effects of grazing management in brachiaria grass-forage peanut pastures on canopy structure and forage intake. Journal of Animal Science, , v. 96, p. 3837-3849, 2018.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
9. | | DEPABLOS, L.; HOMEM, B. G. C.; FERREIRA, I. M.; BERNARDES, T. F.; BODDEY, R. M.; LARA, M. A. S.; CASAGRANDE, D. R. Nitrogen cycling in tropical grass-legume pastures managed under canopy light interception. Nutrient Cycling in Agroecosystems, V. 121,p. 51-67, 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
10. | | GOMES, F. de K.; HOMEM, B. G. C.; GUIMARÃES, B. C.; DANES, M. de S. C.; BRODERICK, G. A.; ALVES, B. J. R.; BODDEY, R. M.; CASAGRANDE, D. R. Carbohydrates and protein digestive traits in beef cattlegrazing fertilised or mixed tropical pasture. Archives onf Animal Nutrition, v. 78, n. 1, p. 60-77, 2024.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
11. | | HOMEM, B. G. C.; BORGES, L. P. C.; LIMA, I. G. G. de; GUIMARÃES, B. C.; SPASIANI, P. P.; FERREIRA, I. M.; MEO FILHO, P.; BERNDT, A.; ALVES, B. J. R.; URQUIAGA, S.; BODDEY, R. M.; CASAGRANDE, D. R. Forage peanut legume as a strategy for improving beef production without increasing livestock greenhouse gas emissions. Animal The international journal of animal biosciences. v 18, 101158, 2024.Tipo: Artigo em Periódico Indexado |
Biblioteca(s): Embrapa Agrobiologia. |
| |
12. | | GUIMARÃES, B. C.; GOMES, F. de K.; HOMEM, B. G. C.; LIMA, I. B. G. de; SPASIANI, P. S.; BODDEY, R. M.; ALVES, B. J. R.; CASAGRANDE, D. R. Emissions of N2O and NH3 from cattle excreta in grass pastures fertilized with N or mixed with a forage legume. Nutrient Cycling in Agroecosystems, v. 122, p. 325?346, 2022.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
13. | | HOMEM, B. G. C.; LIMA, I. B. G. de; SPASIANI, P. P.; FERREIRA, I. G.; BODDEY, R. M.; BERNARDES, T. F.; DUBEUX JUNIOR, J. C. B.; CASAGRANDE, D. R. Palisadegrass pastures with or without nitrogen or mixed with forage peanut grazed to a similar target canopy height. 1. Effects on herbage mass, canopy structure and forage nutritive value. Grass and Forage Science, First published: 06 April 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
14. | | HOMEM, B. G. C.; LIMA, I. B. G. de; SPASIANI, P. P.; BORGES, L. P. C.; BODDEY, R. M.; DUBEUX JUNIOR, J. C. B.; BERNARDES, T. F.; CASAGRANDE, D. R. Palisadegrass pastures with or without nitrogen or mixed with forage peanut grazed to a similar target canopy height. 2. Effects on animal performance, forage intake and digestion, and nitrogen metabolism. Grass and Forage Science, v. 76, n. 3, p. 413-426, 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 1 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
15. | | HOMEM, B. G. C.; LIMA, I. B. G. de; SPASIANI, P. P.; GUIMARÃES, B. C.; GUIMARÃES, G. D.; BERNARDES, T. F.; REZENDE, C. de P.; BODDEY, R. M.; CASAGRANDE, D. R. N-fertiliser application or legume integration enhances N cycling in tropical pastures. Nutrient Cycling in Agroecosystems, Published 02 September 2021.Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
Biblioteca(s): Embrapa Agrobiologia. |
| |
16. | | 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. |
| |
17. | | 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. |
| |
Registros recuperados : 17 | |
|
Nenhum registro encontrado para a expressão de busca informada. |
|
|