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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia; Embrapa Gado de Leite; Embrapa Solos. |
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Data corrente: |
18/04/2024 |
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Data da última atualização: |
18/04/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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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. |
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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. |
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Título: |
Evaluation of photosynthetic variables of Brachiaria brizantha under eucalyptus canopies in a livestock-forestry integration system. |
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Ano de publicação: |
2024 |
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Fonte/Imprenta: |
Agronomy Research, v. 22, 2024. |
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DOI: |
https://doi.org/10.15159/ar.24.016 |
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Idioma: |
Inglês |
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Notas: |
On-line first. |
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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 |
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Palavras-Chave: |
Sistemas silvipastoris. |
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Thesagro: |
Forragem; Fotossíntese; Gado. |
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Thesaurus Nal: |
Cattle; Forage; Photosynthesis; Silvopastoral systems. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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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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| Registros recuperados : 161 | |
| 6. |  | PENTEADO, S. do R. C.; IEDE, E. T.; CASTELLANO, C. Avaliação de isolados de Deladenus siricidicola (Nematoda, Neotylenchidae) obtidos em adultos de Sirex noctilio (Hymenoptera, Siricidae), em laboratório. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 17.; ENCONTRO NACIONAL DE FITOSSANITARISTAS, 8., 1998, Rio de Janeiro. Resumos. Rio de Janeiro: [s.n.], 1998. p.766. Resumo.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | IEDE, E. T.; PENTEADO, S. do R. C.; SCHAITZA, E. Programa Nacional de Controle a Vespa-da-madeira no Brasil. In: IEDE, E.T.; SCHAITZA, E.; PENTEADO, S.; REARDON, R.C.; MURPHY, S.T. (Coord.). Proceedings of a Conference: Training in the Control of Sirex noctilio by the Use of Natural Enemies. Colombo: EMBRAPA-CNPF; Morgantown: USDA, Forest Service, Forest Health Tecnhnology Enterprise Team; Berkshire: Centre for Agriculture and Bioscience International, 1998. p. 43-51. (USDA. FHTET 98-13) Publicado em duas linguas. Titulo em portugues: Atas do Treinamento sobre Uso de Inimigos Naturais para o Controle de Sirex noctilio.| Biblioteca(s): Embrapa Florestas. |
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| 13. | | ZALESKI, S. R. M.; PENTEADO, S. do R. C. Biologia de Cinara pinivora (Hemoptera: Aphididae), em duas temperaturas, em laboratório. In: EVENTO DE INICIAÇÃO CIENTÍFICA DA EMBRAPA FLORESTAS, 1., 2002, Colombo. Anais. Colombo: Embrapa Florestas, 2002. 1 CD-ROM. (Embrapa Florestas. Documentos, 70). Organizado por Patrícia Póvoa de Mattos, Celso Garcia Auer, Paulo César Botosso e Rejane Stumpf Sberze.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 161 | |
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