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| 5. |  | PEGORARO, L. M. C.; SILVA, J. F.; CURTINAZ, A.; MION, B.; PRADIEÉ, J.; MADEIRA, E. M.; SANTOS, E. C. S.; VIEIRA, A. D.; PEREIRA, M. M.; VIEGAS, D. Different sperm selection methods used for ovine in vitro embryo production. Animal Reproduction, v.10, n.3, p. 528, Jul./Sept. 2013 Publicado no: roceedings of the 27th Annual Meeting of the Brazilian Embryo Technology Society (SBTE), August 29th to September 1st, 2013, Praia do Forte, BA, Brazil.| Biblioteca(s): Embrapa Clima Temperado. |
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| 8. | | OLIVEIRA, A. L. B. de; MACEDO, G. C. de; ROSINHA, G. M. S.; MELGAREJO, J. L.; ALVES, A. G. L.; BARRETO, W. T. G.; SANTOS, F. M.; CAMPOS, J. B. V.; HERRERA, H. M.; OLIVEIRA, C. E. de. Detection of Brucella spp. in dogs at Pantanal wetlands. Brazilian Journal of Microbiology, v. 50, n. 1, p. 307-312, 2019.| Biblioteca(s): Embrapa Gado de Corte. |
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| 11. | | REGALIN, F. M.; CARGNIN, A. Crescimento inicial de clones de variedades Vitis vinifera em Bento Gonçalves, RS. In: ENCONTRO DE INICIAÇÃO CIENTÍFICA, 15., 2017.; ENCONTRO DE PÓS-GRADUANDOS DA EMBRAPA UVA E VINHO, 11., 2017, Bento Gonçalves. Resumos...Bento Gonçalves, RS: Embrapa Uva e Vinho, 2017. p. 23.| Biblioteca(s): Embrapa Uva e Vinho. |
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| 12. | | HERRERA, H. M.; ROSA, W. P.; GRAÇA, L. C. D.; LIMA, J. V. B.; SANTOS, S. A.; LOURIVAL, F. F.; PIOVEZAN, U. Conciliação entre desenvolvimento e conservação no Pantanal Mato-Grossense: interesse do proprietário e da coletividade. In: SEMINÁRIO DE AGROECOLOGIA DE MATO GROSSO DO SUL, 3.; ENCONTRO DE PRODUTORES AGROECOLÓGICOS DE MS, 2010, Corumbá, MS. Construindo um futuro sustentável: anais. Dourados: Embrapa Agropecuária Oeste; Corumbá: Embrapa Pantanal; Campo Grande: Embrapa Gado de Corte, 2010. 1 CD-Rom. Disponível também em: Cadernos de Agroecologia, V. 5, n.1, 2010.| Biblioteca(s): Embrapa Pantanal. |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
05/01/2023 |
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Data da última atualização: |
05/01/2023 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
LIMA, M. A. de; LUIZ, A. J. B.; GALVAO, J. A. H.; CABRAL, O. M. R. |
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Afiliação: |
MAGDA APARECIDA DE LIMA, CNPMA; ALFREDO JOSE BARRETO LUIZ, CNPMA; JOSE ABRAHAO HADDAD GALVAO, CNPMA; OSVALDO MACHADO RODRIGUES CABRAL, CNPMA. |
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Título: |
Preliminary measurements on diel CH4 and N2O fluxes on Brachiaria pasture. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
In: INTERNATIONAL GREENHOUSE GAS & ANIMAL AGRICULTURE CONFERENCE, 8., Orlando, Florida. Abstract Book... Orlando, Florida: GGAA, 2022. |
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Páginas: |
p. 139. |
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Idioma: |
Português |
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Conteúdo: |
Brazil has extensive pasture areas for beef cattle grazing. An experiment was carried out in summer in a Brachiaria pasture in Southeastern Brazil, characterized by hot and humid climate in summer and dry in winter, with the objective of measuring hourly fluxes of methane and nitrous oxide from soil and identifying a possible relationship with environmental parameters, including air temperature, soil temperature, solar radiation, photosynthetically active radiation (PAR), and soil moisture. Temperature and radiation data were obtained from a climatological station on February 13 and 14, 2020, starting at 9:00 am and ending at the same hour of the next day. Soil moisture data were recorded by humidity sensors. The gas collection method used was the static closed chamber. Five chambers were used at the same time. Methane and nitrous oxide concentrations were sampled every 2 hours, in intervals of 0, 10, 20, 30, and 40 minutes. The gas samples were extracted by BD 60 mL syringes with a three-way luer lock valve and then transferred to 12 mL vacuum vials of the Labco Exetainer brand. A Thermo Scientific chromatograph model, Trace 1310, was used to determine the concentrations of gases. The statistical analysis was performed using the PROC CORR procedure of the SAS program. Preliminary results showed that N2O fluxes peaked at 3 p.m. with around 10 ?g N-N2O m-2 h-1 and a minimum value of -2 ?g N-N2O m-2 h-1 at 1 a.m. N2O fluxes were positively correlated with air temperature (0.70939 /0.0066) and with PAR (0.59037/0.0337), while they were negatively correlated with relative humidity (-.69266/0.0087). Methane correlated negatively with soil temperature (-0.88646/<0.001), although the concentrations were very low throughout the day. Other diel measurements are going to be carried out and the experiment will be repeated in the summer season. MenosBrazil has extensive pasture areas for beef cattle grazing. An experiment was carried out in summer in a Brachiaria pasture in Southeastern Brazil, characterized by hot and humid climate in summer and dry in winter, with the objective of measuring hourly fluxes of methane and nitrous oxide from soil and identifying a possible relationship with environmental parameters, including air temperature, soil temperature, solar radiation, photosynthetically active radiation (PAR), and soil moisture. Temperature and radiation data were obtained from a climatological station on February 13 and 14, 2020, starting at 9:00 am and ending at the same hour of the next day. Soil moisture data were recorded by humidity sensors. The gas collection method used was the static closed chamber. Five chambers were used at the same time. Methane and nitrous oxide concentrations were sampled every 2 hours, in intervals of 0, 10, 20, 30, and 40 minutes. The gas samples were extracted by BD 60 mL syringes with a three-way luer lock valve and then transferred to 12 mL vacuum vials of the Labco Exetainer brand. A Thermo Scientific chromatograph model, Trace 1310, was used to determine the concentrations of gases. The statistical analysis was performed using the PROC CORR procedure of the SAS program. Preliminary results showed that N2O fluxes peaked at 3 p.m. with around 10 ?g N-N2O m-2 h-1 and a minimum value of -2 ?g N-N2O m-2 h-1 at 1 a.m. N2O fluxes were positively correlated with air temperature (0.70... Mostrar Tudo |
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Thesagro: |
Brachiaria. |
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Thesaurus NAL: |
Measurement; Pastures. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150656/1/RA-LimaMA-et-al-GGAA-2022-p139.pdf
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Marc: |
LEADER 02501nam a2200193 a 4500
001 2150656
005 2023-01-05
008 2022 bl uuuu u00u1 u #d
100 1 $aLIMA, M. A. de
245 $aPreliminary measurements on diel CH4 and N2O fluxes on Brachiaria pasture.$h[electronic resource]
260 $aIn: INTERNATIONAL GREENHOUSE GAS & ANIMAL AGRICULTURE CONFERENCE, 8., Orlando, Florida. Abstract Book... Orlando, Florida: GGAA$c2022
300 $ap. 139.
520 $aBrazil has extensive pasture areas for beef cattle grazing. An experiment was carried out in summer in a Brachiaria pasture in Southeastern Brazil, characterized by hot and humid climate in summer and dry in winter, with the objective of measuring hourly fluxes of methane and nitrous oxide from soil and identifying a possible relationship with environmental parameters, including air temperature, soil temperature, solar radiation, photosynthetically active radiation (PAR), and soil moisture. Temperature and radiation data were obtained from a climatological station on February 13 and 14, 2020, starting at 9:00 am and ending at the same hour of the next day. Soil moisture data were recorded by humidity sensors. The gas collection method used was the static closed chamber. Five chambers were used at the same time. Methane and nitrous oxide concentrations were sampled every 2 hours, in intervals of 0, 10, 20, 30, and 40 minutes. The gas samples were extracted by BD 60 mL syringes with a three-way luer lock valve and then transferred to 12 mL vacuum vials of the Labco Exetainer brand. A Thermo Scientific chromatograph model, Trace 1310, was used to determine the concentrations of gases. The statistical analysis was performed using the PROC CORR procedure of the SAS program. Preliminary results showed that N2O fluxes peaked at 3 p.m. with around 10 ?g N-N2O m-2 h-1 and a minimum value of -2 ?g N-N2O m-2 h-1 at 1 a.m. N2O fluxes were positively correlated with air temperature (0.70939 /0.0066) and with PAR (0.59037/0.0337), while they were negatively correlated with relative humidity (-.69266/0.0087). Methane correlated negatively with soil temperature (-0.88646/<0.001), although the concentrations were very low throughout the day. Other diel measurements are going to be carried out and the experiment will be repeated in the summer season.
650 $aMeasurement
650 $aPastures
650 $aBrachiaria
700 1 $aLUIZ, A. J. B.
700 1 $aGALVAO, J. A. H.
700 1 $aCABRAL, O. M. R.
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Embrapa Meio Ambiente (CNPMA) |
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