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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Corte. Para informações adicionais entre em contato com cnpgc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
19/12/2018 |
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Data da última atualização: |
09/01/2019 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
KICHEL, A. N.; ALMEIDA, R. G. de; GOMES, R. da C. |
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Afiliação: |
ARMINDO NEIVO KICHEL, CNPGC; Rodrigo Giolo de Almeida, CNPGC; RODRIGO DA COSTA GOMES, CNPGC. |
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Título: |
Tecnologias para aumentar a produtividade e o retorno econômico da pecuária de Corte. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
In: SIMPÓSIO INTERNACIONAL DE RECUPERAÇÃO ANIMAL, 8., 2018, Londrina. Anais... São Paulo: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, 2018, 191 p. |
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Páginas: |
p. 17-40 |
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Idioma: |
Português |
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Conteúdo: |
A grande demanda mundial por proteína animal, associada ao crescente aumento da população humana, tem levado a preocupação com aumento da produtividade de proteínas de origem animal de forma sustentável. A pecuária brasileira vem sofrendo grandes transformações motivadas pelo aumento nos custos de produção, baixa produtividade e redução da rentabilidade, como também pelo acirramento da competitividade entre as commodities, exigindo diversificação de atividades, aumento da produtividade e qualidade dos produtos. Essa perspectiva tornase ainda mais complexa pela pressão que as atividades agropecuárias vêm sofrendo para diminuir o impacto sobre o ambiente. |
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Palavras-Chave: |
Pastagem degradada. |
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Thesagro: |
Degradação Ambiental; Gado de Corte; Pastagem; Pecuária. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01428nam a2200205 a 4500
001 2102130
005 2019-01-09
008 2018 bl uuuu u00u1 u #d
100 1 $aKICHEL, A. N.
245 $aTecnologias para aumentar a produtividade e o retorno econômico da pecuária de Corte.$h[electronic resource]
260 $aIn: SIMPÓSIO INTERNACIONAL DE RECUPERAÇÃO ANIMAL, 8., 2018, Londrina. Anais... São Paulo: Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, 2018, 191 p.$c2018
300 $ap. 17-40
520 $aA grande demanda mundial por proteína animal, associada ao crescente aumento da população humana, tem levado a preocupação com aumento da produtividade de proteínas de origem animal de forma sustentável. A pecuária brasileira vem sofrendo grandes transformações motivadas pelo aumento nos custos de produção, baixa produtividade e redução da rentabilidade, como também pelo acirramento da competitividade entre as commodities, exigindo diversificação de atividades, aumento da produtividade e qualidade dos produtos. Essa perspectiva tornase ainda mais complexa pela pressão que as atividades agropecuárias vêm sofrendo para diminuir o impacto sobre o ambiente.
650 $aDegradação Ambiental
650 $aGado de Corte
650 $aPastagem
650 $aPecuária
653 $aPastagem degradada
700 1 $aALMEIDA, R. G. de
700 1 $aGOMES, R. da C.
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Embrapa Gado de Corte (CNPGC) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
17/11/2021 |
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Data da última atualização: |
17/11/2021 |
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Tipo da produção científica: |
Capítulo em Livro Técnico-Científico |
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Autoria: |
SATO, J. H.; MARCHAO, R. L.; FIGUEIREDO, C. C. de; VILELA, L.; OLIVEIRA, A. D. de; CARVALHO, A. M. de. |
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Afiliação: |
JULIANA HIROMI SATO; ROBELIO LEANDRO MARCHAO, CPAC; CÍCERO CÉLIO DE FIGUEIREDO; LOURIVAL VILELA, CPAC; ALEXSANDRA DUARTE DE OLIVEIRA, CPAC; ARMINDA MOREIRA DE CARVALHO, CPAC. |
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Título: |
How Soil Organic Carbon Fractions Affect N2O Emissions in a Long-Term Integrated Crop-Livestock System: A Case Study. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
In: DATTA, R.; MEENA, R. S. (org.). Soil Carbon Stabilization to Mitigate Climate Change. New York: Springer Singapore, 2021. v. 01, p. 307-332. |
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Idioma: |
Inglês |
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Conteúdo: |
The nitrous oxide (N2O) emissions in agricultural systems are influenced by edaphoclimatic conditions, and the availability of soil organic matter (SOM) is a key factor in this process. Understand the relationship between SOM fractions and N2O emissions in cultivated soils is fundamental to the sustainable manage- ment of tropical soils. However, this relationship remains unclear. The objective of this study was to evaluate the accumulation of labile and stable fractions of SOM and their relations with N2O emissions in a 24-year field study that represents farm conditions in the Cerrado region. The following hypotheses were considered: (i) conservation systems protect SOM, avoiding its rapid decomposition and, consequently, reducing losses of N2O to the atmosphere; (ii) conservation systems favor the increase of labile and stable fractions of SOM, which has the effect of reducing the N2O emission in the soil. The following land- use systems were assessed: no-tillage with integrated crop-livestock system (NT1); no-tillage with continuous cropping (NT2); and conventional system (CT). An area of native vegetation of Cerrado was used as a reference. Nitrous oxide emissions were quantified over a period of 509 days, covering two agricul- tural years with soybean crop followed by sorghum and corn as a second crop in 2014/2015 and 2015/2016 agricultural years, respectively. Soil carbon fractions (labile and stable) and carbon in different classes of soil aggregates were also determined. The cumulative N2O emissions were larger in CT, intermediate in NT systems, and smaller in the Cerrado area. Among the agricultural systems, lower cumulative N2O emissions were observed in NT1, because of the greatest buildup of carbon in its most stable fractions and occluded in aggregates. From PCA results, it is possible to conclude that aggregation is a key factor that correlates with N2O emissions from soil. Thus, NT1 showed the largest average diameter of aggregates and presented the lowest N2O emissions among agroecosystems. Although the conservation systems show a greater microbial population, stable fractions of carbon are predominant, which decreases avail- ability for the soil microbiota, which justifies lower rates of SOM mineralization and, consequently, the lowest N2O emissions. MenosThe nitrous oxide (N2O) emissions in agricultural systems are influenced by edaphoclimatic conditions, and the availability of soil organic matter (SOM) is a key factor in this process. Understand the relationship between SOM fractions and N2O emissions in cultivated soils is fundamental to the sustainable manage- ment of tropical soils. However, this relationship remains unclear. The objective of this study was to evaluate the accumulation of labile and stable fractions of SOM and their relations with N2O emissions in a 24-year field study that represents farm conditions in the Cerrado region. The following hypotheses were considered: (i) conservation systems protect SOM, avoiding its rapid decomposition and, consequently, reducing losses of N2O to the atmosphere; (ii) conservation systems favor the increase of labile and stable fractions of SOM, which has the effect of reducing the N2O emission in the soil. The following land- use systems were assessed: no-tillage with integrated crop-livestock system (NT1); no-tillage with continuous cropping (NT2); and conventional system (CT). An area of native vegetation of Cerrado was used as a reference. Nitrous oxide emissions were quantified over a period of 509 days, covering two agricul- tural years with soybean crop followed by sorghum and corn as a second crop in 2014/2015 and 2015/2016 agricultural years, respectively. Soil carbon fractions (labile and stable) and carbon in different classes of soil aggregates were also determ... Mostrar Tudo |
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Palavras-Chave: |
Brasileiro. |
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Thesagro: |
Carbono; Cerrado; Efeito Estufa; Matéria Orgânica; Plantio Direto. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03151naa a2200253 a 4500
001 2136212
005 2021-11-17
008 2021 bl uuuu u00u1 u #d
100 1 $aSATO, J. H.
245 $aHow Soil Organic Carbon Fractions Affect N2O Emissions in a Long-Term Integrated Crop-Livestock System$bA Case Study.$h[electronic resource]
260 $c2021
520 $aThe nitrous oxide (N2O) emissions in agricultural systems are influenced by edaphoclimatic conditions, and the availability of soil organic matter (SOM) is a key factor in this process. Understand the relationship between SOM fractions and N2O emissions in cultivated soils is fundamental to the sustainable manage- ment of tropical soils. However, this relationship remains unclear. The objective of this study was to evaluate the accumulation of labile and stable fractions of SOM and their relations with N2O emissions in a 24-year field study that represents farm conditions in the Cerrado region. The following hypotheses were considered: (i) conservation systems protect SOM, avoiding its rapid decomposition and, consequently, reducing losses of N2O to the atmosphere; (ii) conservation systems favor the increase of labile and stable fractions of SOM, which has the effect of reducing the N2O emission in the soil. The following land- use systems were assessed: no-tillage with integrated crop-livestock system (NT1); no-tillage with continuous cropping (NT2); and conventional system (CT). An area of native vegetation of Cerrado was used as a reference. Nitrous oxide emissions were quantified over a period of 509 days, covering two agricul- tural years with soybean crop followed by sorghum and corn as a second crop in 2014/2015 and 2015/2016 agricultural years, respectively. Soil carbon fractions (labile and stable) and carbon in different classes of soil aggregates were also determined. The cumulative N2O emissions were larger in CT, intermediate in NT systems, and smaller in the Cerrado area. Among the agricultural systems, lower cumulative N2O emissions were observed in NT1, because of the greatest buildup of carbon in its most stable fractions and occluded in aggregates. From PCA results, it is possible to conclude that aggregation is a key factor that correlates with N2O emissions from soil. Thus, NT1 showed the largest average diameter of aggregates and presented the lowest N2O emissions among agroecosystems. Although the conservation systems show a greater microbial population, stable fractions of carbon are predominant, which decreases avail- ability for the soil microbiota, which justifies lower rates of SOM mineralization and, consequently, the lowest N2O emissions.
650 $aCarbono
650 $aCerrado
650 $aEfeito Estufa
650 $aMatéria Orgânica
650 $aPlantio Direto
653 $aBrasileiro
700 1 $aMARCHAO, R. L.
700 1 $aFIGUEIREDO, C. C. de
700 1 $aVILELA, L.
700 1 $aOLIVEIRA, A. D. de
700 1 $aCARVALHO, A. M. de
773 $tIn: DATTA, R.; MEENA, R. S. (org.). Soil Carbon Stabilization to Mitigate Climate Change. New York: Springer Singapore, 2021.$gv. 01, p. 307-332.
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