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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
19/05/2022 |
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Data da última atualização: |
19/05/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BARBOSA, L. R.; SOUZA, H. A. de; TEIXEIRA NETO, M. L.; LEITE, L. F. C. |
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Afiliação: |
LEOVÂNIO RODRIGUES BARBOSA, UFPB; HENRIQUE ANTUNES DE SOUZA, CPAMN; MARCOS LOPES TEIXEIRA NETO, CPAMN; LUIZ FERNANDO CARVALHO LEITE, CPAMN. |
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Título: |
Organic matter compartments in an Ultisol under integrated agricultural and livestock production systems in the Cerrado. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Ciência Rural, v. 52, n. 10, e20200845, 2022. |
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Idioma: |
Inglês |
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Conteúdo: |
Integrated agricultural production systems have the potential to increase organic matter content, which is reflected in the soil carbon (C) and nitrogen (N) concentrations. Here, we evaluated the C and N stocks and its compartments in a typical distro cohesive yellow Ultisol under the no-till (NT) and crop-livestock integration (CLI) systems, in eastern Maranhão. Five areas with different management strategies were evaluated, more specifically, one area was managed under the NT system in succession for 14 years (soybean/millet), three areas had different CLI system adoption histories (i.e., CLI was adopted 2, 4, or 8 years prior to sample collection); and finally, one area consisted of native Cerrado (savannah) vegetation. Soil samples were collected at depths of 0-0.10, 0.10-0.20, 0.20-0.30, and 0.30-0.50 m,to analyze the content and total stocks of carbon (C) and its compartments (physical and chemical), N content, soil microbial biomass, and basal respiration. Results revealed higher content and stock of C and N in areas with CLI. The principal humic substance reported was humin, and higher concentrations of C associated with minerals were present in areas under more recent CLI adoption (2 and 4 years). We demonstrated that the adoption of CLI, even if recent, leads to immediate increases in the concentrations of C and its fractions as a result of using forage crops. NT for 14 years and CLI for 8 years exhibited higher levels of C management and higher soil biological activity due to the greater stability of these systems. MenosIntegrated agricultural production systems have the potential to increase organic matter content, which is reflected in the soil carbon (C) and nitrogen (N) concentrations. Here, we evaluated the C and N stocks and its compartments in a typical distro cohesive yellow Ultisol under the no-till (NT) and crop-livestock integration (CLI) systems, in eastern Maranhão. Five areas with different management strategies were evaluated, more specifically, one area was managed under the NT system in succession for 14 years (soybean/millet), three areas had different CLI system adoption histories (i.e., CLI was adopted 2, 4, or 8 years prior to sample collection); and finally, one area consisted of native Cerrado (savannah) vegetation. Soil samples were collected at depths of 0-0.10, 0.10-0.20, 0.20-0.30, and 0.30-0.50 m,to analyze the content and total stocks of carbon (C) and its compartments (physical and chemical), N content, soil microbial biomass, and basal respiration. Results revealed higher content and stock of C and N in areas with CLI. The principal humic substance reported was humin, and higher concentrations of C associated with minerals were present in areas under more recent CLI adoption (2 and 4 years). We demonstrated that the adoption of CLI, even if recent, leads to immediate increases in the concentrations of C and its fractions as a result of using forage crops. NT for 14 years and CLI for 8 years exhibited higher levels of C management and higher soil biological act... Mostrar Tudo |
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Palavras-Chave: |
Fracionamento do carbono; Integração lavoura-pecuária; Manejo conservacionista. |
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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/1143256/1/OrganicMatterCompartmentsUltisolIntegratedAgriculturalCR52.2022.pdf
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Marc: |
LEADER 02195naa a2200193 a 4500
001 2143256
005 2022-05-19
008 2022 bl uuuu u00u1 u #d
100 1 $aBARBOSA, L. R.
245 $aOrganic matter compartments in an Ultisol under integrated agricultural and livestock production systems in the Cerrado.$h[electronic resource]
260 $c2022
520 $aIntegrated agricultural production systems have the potential to increase organic matter content, which is reflected in the soil carbon (C) and nitrogen (N) concentrations. Here, we evaluated the C and N stocks and its compartments in a typical distro cohesive yellow Ultisol under the no-till (NT) and crop-livestock integration (CLI) systems, in eastern Maranhão. Five areas with different management strategies were evaluated, more specifically, one area was managed under the NT system in succession for 14 years (soybean/millet), three areas had different CLI system adoption histories (i.e., CLI was adopted 2, 4, or 8 years prior to sample collection); and finally, one area consisted of native Cerrado (savannah) vegetation. Soil samples were collected at depths of 0-0.10, 0.10-0.20, 0.20-0.30, and 0.30-0.50 m,to analyze the content and total stocks of carbon (C) and its compartments (physical and chemical), N content, soil microbial biomass, and basal respiration. Results revealed higher content and stock of C and N in areas with CLI. The principal humic substance reported was humin, and higher concentrations of C associated with minerals were present in areas under more recent CLI adoption (2 and 4 years). We demonstrated that the adoption of CLI, even if recent, leads to immediate increases in the concentrations of C and its fractions as a result of using forage crops. NT for 14 years and CLI for 8 years exhibited higher levels of C management and higher soil biological activity due to the greater stability of these systems.
653 $aFracionamento do carbono
653 $aIntegração lavoura-pecuária
653 $aManejo conservacionista
700 1 $aSOUZA, H. A. de
700 1 $aTEIXEIRA NETO, M. L.
700 1 $aLEITE, L. F. C.
773 $tCiência Rural$gv. 52, n. 10, e20200845, 2022.
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Embrapa Meio-Norte (CPAMN) |
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| 8. |  | LEITE, L. F. C. O mapeamento da emissão de gases. Disponível em: . Acesso em: 28 dez. 2007. Artigo também publicado no site: http://www.grupocultivar.com.br, não está mais disponível.| Tipo: Artigo de Divulgação na Mídia |
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