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| Registros recuperados : 10 | |
| 1. |  | BARRIQUELLO, M. F.; PÉREZ, M. G.; NEVES, E. F. A.; MARTIN-NETO, L. Estudo da estrutura de polímeros análogos às substâncias húmicas utilizando RMN de 13C em estado sólido. In: ENCONTRO NACIONAL DE QUÍMICA ANALÍTICA, ENQA, 12. Química Analítica Moderna: uma contribuição para a química limpa., out. 2003., São Luís, MA. Resumos... São Luís, MA. 2003. [CD-ROM]. Ref. OT 017.| Biblioteca(s): Embrapa Instrumentação. |
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| 3. | | SILVA, A. C.; TORRADO, P. V.; MARTIN-NETO, L. VASQUEZ, F. M.; PÉREZ, M. G. Soil organic matter and geomorphic surface stability relationship in an oxisol toposequence (SE BRAZIL). In: INTERNATIONAL MEETING OF INTERNATIONAL HUMIC SUBSTANCES SOCIETY. -- IHSS, 12, São Pedro, SP, 2004. Humic substances and soil and water environment. Abstracts...[São Carlos], SP: Embrapa Instrumentação Agropecuária, 2004. p. 80.| Biblioteca(s): Embrapa Instrumentação. |
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| 4. | | PÉREZ, M. G.; TORRADO, P. V.; MARTIN-NETO, L.; COLNAGO, L. A.; MILON, D. M. P. B.; GOMES, F. H. Study of humic acids from brazilian spodosol by 13C NMR and FTIR spectroscopy. In: NUCLEAR MAGNETIC RESONANCE USERS MEETING, 10.; PORTUGUESE-BRAZILIAN NMR MEETING, 3.; IBERO AMERICAN NMR MEETING 2005, Angra dos Reis. Abstracts... Angra dos Reis: AUREMN, 2005. p. 107.| Biblioteca(s): Embrapa Instrumentação. |
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| 6. | | ÇIÇEK, S. S.; PÉREZ, M. G; WENZEL-STORJOHANN, A.; BEZERRA, R. M.; SEGOVIA, J. F. O.; GIRRESER, U.; KANZAKI, I.; TASDEMIR, D. Antimicrobial prenylated isoflavones from the leaves of the Amazonian medicinal plant vatairea guianensis Aubl. Journal of Natural Products, v. 85, p. 927-935, 2022.| Biblioteca(s): Embrapa Amapá. |
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| 7. | | PÉREZ, M. G.; MARTIN-NETO, L.; SAAB, S. C.; NOVOTNY, E. H.; MILORI, D. M. B. P.; BAGNATO, V. S.; COLNAGO, L. A.; MELO, W. J.; KNICKER, H. Characterization of humic acids from a brazilian oxisol under different tillage systems by EPR, 13C NMR, FTIR and fluorescence spectroscopy. Geoderma, Amsterdam, v. 118, p. 181-190, 2004.| Biblioteca(s): Embrapa Instrumentação. |
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| 8. | | PÉREZ, M. G.; MARTIN NETO, L.; COLNAGO, L. A.; MILORI, D. M. B. P.; CAMARGO, O. A. de; BERTON, R.; BETTIOL, W. Characterization of humic acids extracted from sewage sludge-amended oxisols by electron paramagnetic resonance. Soil & Tillage Research, Amsterdam, v. 91, p. 95-100, 2006.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 9. | | PÉREZ, M. G.; MILORI, D. M. B. P.; MARTIN NETO, L.; COLNAGO, L. A.; CAMARGO, O. A. de; BERTON, R.; BETTIOL, W. Laser-induced fluorescence of organic matter from a Brazilian oxisol under sewage sludge applications. Scientia Agricola, Piracicaba, v. 63, n. 3, p. 269-275, maio/jun. 2006.| Biblioteca(s): Embrapa Meio Ambiente. |
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| 10. | | MARTIN NETO, L.; SIMÕES, M. L.; FERREIRA, J. A.; MILORI, D. M. B. P.; SILVA, W. T. L. da; PEREZ, M. G.; NASCIMENTO, O. R.; BAYER, C.; MIELNICZUK, J. Applications of spectroscopies in humic substances research. In: HUMIC SCIENCE AND TECHNOLOGY, 8., 2005, Boston. Aggregation and physiological effects: [abstracts]. Boston: Northeastern University, 2005.| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 10 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
18/11/2020 |
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Data da última atualização: |
18/11/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
PEREZ. M. G.; ROMANIUK, R. I.; COSENTINO, V. R. N.; BUSTO, M.; GONZÁLEZ, F. A.; TAB0ADA, M. |
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Afiliação: |
M. G. Perez, Unversidad de Buenos Aires, AR; R. I. Romaniuk, INTA, Buenos Aires; V. R. N. Cosentino, INTA, Buenos Aires; M. Busto, Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina; F. A. González, Universidad de Buenos Aires; M. A. Taboada, Universidad de Buenos Aires. |
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Título: |
Winter soil N2O emissions from a meat production system under direct grazing of Argentine Pampa |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Animal Production Science, published online 14 September 2020. |
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ISSN: |
1836-5787 |
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DOI: |
https://doi.org/10.1071/AN19517 |
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Idioma: |
Inglês |
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Conteúdo: |
Context. In grazed pasture systems, most nitrogen (N) losses arise from N deposited in the form of ruminant excreta patches. However, during winter, when grassland stocking rate and soil nitrous oxide (N2O) emissions are expected to be low, N2O fluxes from excreta patches could be considered negligible for the calculation of the total emissions. Aims. The aims of the study were to quantify and compare N2O winter emissions in soils with and without grazing and to study some drivers of N2O emission during a low-temperature period. Methods.The experiment was performed in the Flooding Pampa, Argentina, in a completely randomised design with repeated measures over time. The treatments were urine, faeces, and control without excreta addition. During winter, 20 gas samplings were made for each treatment, and the results of N2O fluxes were extrapolated to 1 ha. Key results. Daily N-N2O emissions of the control were 0?10 mg/m2 .h. The N-N2O emissions from the urine patches were higher (P < 0.05) than those from faeces and control treatments, with average respective treatment values of 26.13, 5.35 and 2.88 mg N-N2O/m2 .h. The N-N2O emissions increased after urine application and fluxes from this treatment were intensified after rainfall. The cumulative N2O emission per chamber was almost 10 times higher in the urine treatment than in the faeces and control treatments. Conclusion. The air temperature influenced N2O emissions. The accumulated N2O per hectare arising from animal deposition was <5% greater than in the control. Implications. Although the contribution of animal excreta to soil N2O emissions seems to be low, it could be of relevance once extrapolated to the total area under grazing on the Argentinean pampas (principally Flooding Pampa) where the low-temperatures period is at least 15% of the year. MenosContext. In grazed pasture systems, most nitrogen (N) losses arise from N deposited in the form of ruminant excreta patches. However, during winter, when grassland stocking rate and soil nitrous oxide (N2O) emissions are expected to be low, N2O fluxes from excreta patches could be considered negligible for the calculation of the total emissions. Aims. The aims of the study were to quantify and compare N2O winter emissions in soils with and without grazing and to study some drivers of N2O emission during a low-temperature period. Methods.The experiment was performed in the Flooding Pampa, Argentina, in a completely randomised design with repeated measures over time. The treatments were urine, faeces, and control without excreta addition. During winter, 20 gas samplings were made for each treatment, and the results of N2O fluxes were extrapolated to 1 ha. Key results. Daily N-N2O emissions of the control were 0?10 mg/m2 .h. The N-N2O emissions from the urine patches were higher (P < 0.05) than those from faeces and control treatments, with average respective treatment values of 26.13, 5.35 and 2.88 mg N-N2O/m2 .h. The N-N2O emissions increased after urine application and fluxes from this treatment were intensified after rainfall. The cumulative N2O emission per chamber was almost 10 times higher in the urine treatment than in the faeces and control treatments. Conclusion. The air temperature influenced N2O emissions. The accumulated N2O per hectare arising from animal depositi... Mostrar Tudo |
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Thesaurus NAL: |
Grassland soils. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02501naa a2200217 a 4500
001 2126802
005 2020-11-18
008 2020 bl uuuu u00u1 u #d
022 $a1836-5787
024 7 $ahttps://doi.org/10.1071/AN19517$2DOI
100 1 $aPEREZ. M. G.
245 $aWinter soil N2O emissions from a meat production system under direct grazing of Argentine Pampa$h[electronic resource]
260 $c2020
520 $aContext. In grazed pasture systems, most nitrogen (N) losses arise from N deposited in the form of ruminant excreta patches. However, during winter, when grassland stocking rate and soil nitrous oxide (N2O) emissions are expected to be low, N2O fluxes from excreta patches could be considered negligible for the calculation of the total emissions. Aims. The aims of the study were to quantify and compare N2O winter emissions in soils with and without grazing and to study some drivers of N2O emission during a low-temperature period. Methods.The experiment was performed in the Flooding Pampa, Argentina, in a completely randomised design with repeated measures over time. The treatments were urine, faeces, and control without excreta addition. During winter, 20 gas samplings were made for each treatment, and the results of N2O fluxes were extrapolated to 1 ha. Key results. Daily N-N2O emissions of the control were 0?10 mg/m2 .h. The N-N2O emissions from the urine patches were higher (P < 0.05) than those from faeces and control treatments, with average respective treatment values of 26.13, 5.35 and 2.88 mg N-N2O/m2 .h. The N-N2O emissions increased after urine application and fluxes from this treatment were intensified after rainfall. The cumulative N2O emission per chamber was almost 10 times higher in the urine treatment than in the faeces and control treatments. Conclusion. The air temperature influenced N2O emissions. The accumulated N2O per hectare arising from animal deposition was <5% greater than in the control. Implications. Although the contribution of animal excreta to soil N2O emissions seems to be low, it could be of relevance once extrapolated to the total area under grazing on the Argentinean pampas (principally Flooding Pampa) where the low-temperatures period is at least 15% of the year.
650 $aGrassland soils
700 1 $aROMANIUK, R. I.
700 1 $aCOSENTINO, V. R. N.
700 1 $aBUSTO, M.
700 1 $aGONZÁLEZ, F. A.
700 1 $aTAB0ADA, M.
773 $tAnimal Production Science, published online 14 September 2020.
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