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Registro Completo |
Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Gado de Leite; Embrapa Solos. |
Data corrente: |
18/04/2024 |
Data da última atualização: |
18/04/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
OLIVEIRA, J. R. de; HÜTHER, C. M.; RICARDO, R. de A. K.; DONAGEMMA, G. K.; BATISTA, I.; CORREIA, M. E. F.; MULLER, M. D.; MELO, P. S. de; CORRÊA, G. M.; RODRIGUES, N. F.; TAVARES, S. R. de L. |
Afiliação: |
JULIA RAMOS DE OLIVEIRA, UNIVERSIDADE FEDERAL FLUMINENSE; CRISTINA MOLL HÜTHER, UNIVERSIDADE FEDERAL FLUMINENSE; REBECCA DE ANDRADE KLEIN RICARDO, UNIVERSIDADE FEDERAL FLUMINENSE; GUILHERME KANGUSSU DONAGEMMA, CNPS; ITAYNARA BATISTA, UNIVERSIDADE FEDERAL FLUMINENSE; MARIA ELIZABETH FERNANDES CORREIA, CNPAB; MARCELO DIAS MULLER, CNPGL; PEDRO SOARES DE MELO, UNIVERSIDADE FEDERAL FLUMINENSE; GABRIELA MARTINS CORRÊA, UNIVERSIDADE FEDERAL FLUMINENSE; NATALIA FERNANDES RODRIGUES, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; SILVIO ROBERTO DE LUCENA TAVARES, CNPS. |
Título: |
Evaluation of photosynthetic variables of Brachiaria brizantha under eucalyptus canopies in a livestock-forestry integration system. |
Ano de publicação: |
2024 |
Fonte/Imprenta: |
Agronomy Research, v. 22, 2024. |
DOI: |
https://doi.org/10.15159/ar.24.016 |
Idioma: |
Inglês |
Notas: |
On-line first. |
Conteúdo: |
Livestock sector generates significant environmental impacts despite its global economic importance. The current challenge is to find sustainable ways of boosting this sector, while mitigating the negative impacts of this activity. In Brazil, degraded pastures are common because of inadequate management, damaging the soil. Integrated livestock-forestry (ILF) systems combine forest species and pastures in the area, incorporating elements of sustainability. In this system, the tree species is related to the productivity of the pasture, as the shade generated by the canopy creates different light conditions, influencing the photosynthetic activity of the forage. The aim of this study was to evaluate the influence of the luminosity of the understory of an ILF system on the photosynthetic activity of the forage species Brachiaria brizantha in the Atlantic Forest region of Brazil. Transient chlorophyll a fluorescence and chlorophyll concentration were analysed in forage plants grown in consortium with Eucalyptus urograndis (Clone 1407), with spacing of 4m between trees and 24m between tree rows. Two treatments were established based on light conditions: the control treatment, corresponding to the condition with the highest light corresponded to the pasture row, and the treatment with the lowest light, corresponding to the area under the canopy. The results show that the low light supplied to the forage plant, during the experiment period, under eucalyptus canopies, promotes changes in the intensity of chlorophyll a fluorescence and chlorophyll concentration, indicating low efficiency of the electron transport chain and changes in leaf nitrogen content, due to a possible stress situation. MenosLivestock sector generates significant environmental impacts despite its global economic importance. The current challenge is to find sustainable ways of boosting this sector, while mitigating the negative impacts of this activity. In Brazil, degraded pastures are common because of inadequate management, damaging the soil. Integrated livestock-forestry (ILF) systems combine forest species and pastures in the area, incorporating elements of sustainability. In this system, the tree species is related to the productivity of the pasture, as the shade generated by the canopy creates different light conditions, influencing the photosynthetic activity of the forage. The aim of this study was to evaluate the influence of the luminosity of the understory of an ILF system on the photosynthetic activity of the forage species Brachiaria brizantha in the Atlantic Forest region of Brazil. Transient chlorophyll a fluorescence and chlorophyll concentration were analysed in forage plants grown in consortium with Eucalyptus urograndis (Clone 1407), with spacing of 4m between trees and 24m between tree rows. Two treatments were established based on light conditions: the control treatment, corresponding to the condition with the highest light corresponded to the pasture row, and the treatment with the lowest light, corresponding to the area under the canopy. The results show that the low light supplied to the forage plant, during the experiment period, under eucalyptus canopies, promotes change... Mostrar Tudo |
Palavras-Chave: |
Sistemas silvipastoris. |
Thesagro: |
Forragem; Fotossíntese; Gado. |
Thesaurus Nal: |
Cattle; Forage; Photosynthesis; Silvopastoral systems. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1163747/1/Evaluation-of-photosynthetic-variables-of-Brachiaria-brizantha-2024.pdf
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Marc: |
LEADER 02767naa a2200361 a 4500 001 2163747 005 2024-04-18 008 2024 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.15159/ar.24.016$2DOI 100 1 $aOLIVEIRA, J. R. de 245 $aEvaluation of photosynthetic variables of Brachiaria brizantha under eucalyptus canopies in a livestock-forestry integration system.$h[electronic resource] 260 $c2024 500 $aOn-line first. 520 $aLivestock sector generates significant environmental impacts despite its global economic importance. The current challenge is to find sustainable ways of boosting this sector, while mitigating the negative impacts of this activity. In Brazil, degraded pastures are common because of inadequate management, damaging the soil. Integrated livestock-forestry (ILF) systems combine forest species and pastures in the area, incorporating elements of sustainability. In this system, the tree species is related to the productivity of the pasture, as the shade generated by the canopy creates different light conditions, influencing the photosynthetic activity of the forage. The aim of this study was to evaluate the influence of the luminosity of the understory of an ILF system on the photosynthetic activity of the forage species Brachiaria brizantha in the Atlantic Forest region of Brazil. Transient chlorophyll a fluorescence and chlorophyll concentration were analysed in forage plants grown in consortium with Eucalyptus urograndis (Clone 1407), with spacing of 4m between trees and 24m between tree rows. Two treatments were established based on light conditions: the control treatment, corresponding to the condition with the highest light corresponded to the pasture row, and the treatment with the lowest light, corresponding to the area under the canopy. The results show that the low light supplied to the forage plant, during the experiment period, under eucalyptus canopies, promotes changes in the intensity of chlorophyll a fluorescence and chlorophyll concentration, indicating low efficiency of the electron transport chain and changes in leaf nitrogen content, due to a possible stress situation. 650 $aCattle 650 $aForage 650 $aPhotosynthesis 650 $aSilvopastoral systems 650 $aForragem 650 $aFotossíntese 650 $aGado 653 $aSistemas silvipastoris 700 1 $aHÜTHER, C. M. 700 1 $aRICARDO, R. de A. K. 700 1 $aDONAGEMMA, G. K. 700 1 $aBATISTA, I. 700 1 $aCORREIA, M. E. F. 700 1 $aMULLER, M. D. 700 1 $aMELO, P. S. de 700 1 $aCORRÊA, G. M. 700 1 $aRODRIGUES, N. F. 700 1 $aTAVARES, S. R. de L. 773 $tAgronomy Research$gv. 22, 2024.
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Registro original: |
Embrapa Solos (CNPS) |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
04/08/2015 |
Data da última atualização: |
31/08/2015 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
RODRIGUES, G. S.; RODRIGUES, I. A.; IRIAS, L. J. M.; CAMPANHOLA, C. |
Afiliação: |
GERALDO STACHETTI RODRIGUES, CNPMA; I. A. RODRIGUES, Embrapa Meio Ambiente; L. J. M. IRIAS, Embrapa Meio Ambiente; C. CAMPANHOLA, Embrapa Meio Ambiente. |
Título: |
Ambitec-Social: um método para avaliação de impacto social de inovações tecnológicas agropecuárias. |
Ano de publicação: |
2005 |
Fonte/Imprenta: |
In: SEMINÁRIO DE GESTIÓN TECNOLÓGICA, 11., 2005, Salvador/BA. Resúmenes y ponencias... Salvador/BA: ALTEC, 2005. p. 39. |
Idioma: |
Português |
Palavras-Chave: |
Inovação tecnológica agropecuária. |
Thesagro: |
Impacto Social. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/127459/1/2005RA-036.pdf
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Marc: |
LEADER 00628nam a2200157 a 4500 001 2021329 005 2015-08-31 008 2005 bl uuuu u00u1 u #d 100 1 $aRODRIGUES, G. S. 245 $aAmbitec-Social$bum método para avaliação de impacto social de inovações tecnológicas agropecuárias.$h[electronic resource] 260 $aIn: SEMINÁRIO DE GESTIÓN TECNOLÓGICA, 11., 2005, Salvador/BA. Resúmenes y ponencias... Salvador/BA: ALTEC, 2005. p. 39.$c2005 650 $aImpacto Social 653 $aInovação tecnológica agropecuária 700 1 $aRODRIGUES, I. A. 700 1 $aIRIAS, L. J. M. 700 1 $aCAMPANHOLA, C.
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