Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/9068 |
Resumo: | The objective of this work was to evaluate the soil total organic carbon (TOC) and total nitrogen (TN) stocks, C and N in labile and recalcitrant fractions of the soil organic matter (SOM), and the C management index, in soils under integrated crop-livestock (ICL) system after four (ICL4) and eight years (ICL8) of settlement. For comparison purposes, other management systems were used: pasture and crop under no tillage (NT), besides native vegetation. The experiment was carried out in a completely randomized block design, with five replicates. The crop-livestock established in a period of eight years can reach a new steady state equivalent to the no-tillage with 23 years of implementation. There was accumulation in total organic carbon of 101.0 (ICL8) and 104.2 Mg ha-1 (NT), and N total stock of 5.5 (ICL8) and 5.8 Mg ha-1 (NT) in the 0–30 cm layer, as well as increase in the stock of labile and recalcitrant C and N fractions of SOM. For crop-livestock with eight years, the C management index of 88 was higher than other management systems, and not different from native vegetation (0–10 cm), however, it was similar to NT in the analysis of the entire profile (0–30 cm). |
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Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock systemFrações lábeis e recalcitrantes da matéria orgânica em solos sob integração lavoura‑pecuáriaorganic carbon; carbon management index; nitrogen; humic substancescarbono orgânico; índice de manejo de carbono; nitrogênio; substâncias húmicasThe objective of this work was to evaluate the soil total organic carbon (TOC) and total nitrogen (TN) stocks, C and N in labile and recalcitrant fractions of the soil organic matter (SOM), and the C management index, in soils under integrated crop-livestock (ICL) system after four (ICL4) and eight years (ICL8) of settlement. For comparison purposes, other management systems were used: pasture and crop under no tillage (NT), besides native vegetation. The experiment was carried out in a completely randomized block design, with five replicates. The crop-livestock established in a period of eight years can reach a new steady state equivalent to the no-tillage with 23 years of implementation. There was accumulation in total organic carbon of 101.0 (ICL8) and 104.2 Mg ha-1 (NT), and N total stock of 5.5 (ICL8) and 5.8 Mg ha-1 (NT) in the 0–30 cm layer, as well as increase in the stock of labile and recalcitrant C and N fractions of SOM. For crop-livestock with eight years, the C management index of 88 was higher than other management systems, and not different from native vegetation (0–10 cm), however, it was similar to NT in the analysis of the entire profile (0–30 cm).O objetivo deste trabalho foi avaliar o estoque de carbono orgânico total (COT) e nitrogênio total (NT), C e N nas frações lábeis e recalcitrantes da matéria orgânica do solo (MOS) e o índice de manejo de C, em solos sob sistema de integração lavoura-pecuária (ILP), após quatro (ILP4) e oito anos (ILP8) de implantação. Para comparação, foram utilizados outros sistemas de manejo: pastagem e lavoura em plantio direto (PD), além de vegetação nativa. O experimento foi realizado em delineamento inteiramente casualizado, com cinco repetições. A integração lavoura-pecuária, estabelecida num período de oito anos, é capaz de alcançar um novo estado estável equivalente ao sistema sob plantio direto com 23 anos de implantação. Houve acúmulo no estoque de C total de 101,0 (ILP8) e 104,2 Mg ha-1 (PD) e N total de 5,5 (ILP8) e 5,8 Mg ha-1 (PD), na camada 0–30 cm, bem como aumento no estoque de C e N nas frações lábeis e recalcitrantes da MOS. Para o ILP com oito anos, o índice de manejo de C de 88 foi superior ao dos demais sistemas de manejo e não diferiu da vegetação nativa na camada 0–10 cm, todavia, foi similar ao PD na análise de todo o perfil (0–30 cm).Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraFundectCNPqda Silva, Eulene FranciscoLourente, Elaine Pinheiro ReisMarchetti, Marlene EstevãoMercante, Fábio MartinsFerreira, Ana Karolina TeixeiraFujii, Gisele Carneiro2012-01-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/9068Pesquisa Agropecuaria Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1321-1331Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1321-13311678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/9068/6642https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9068/4442info:eu-repo/semantics/openAccess2014-06-20T18:08:42Zoai:ojs.seer.sct.embrapa.br:article/9068Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-06-20T18:08:42Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system Frações lábeis e recalcitrantes da matéria orgânica em solos sob integração lavoura‑pecuária |
title |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system |
spellingShingle |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system da Silva, Eulene Francisco organic carbon; carbon management index; nitrogen; humic substances carbono orgânico; índice de manejo de carbono; nitrogênio; substâncias húmicas |
title_short |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system |
title_full |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system |
title_fullStr |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system |
title_full_unstemmed |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system |
title_sort |
Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system |
author |
da Silva, Eulene Francisco |
author_facet |
da Silva, Eulene Francisco Lourente, Elaine Pinheiro Reis Marchetti, Marlene Estevão Mercante, Fábio Martins Ferreira, Ana Karolina Teixeira Fujii, Gisele Carneiro |
author_role |
author |
author2 |
Lourente, Elaine Pinheiro Reis Marchetti, Marlene Estevão Mercante, Fábio Martins Ferreira, Ana Karolina Teixeira Fujii, Gisele Carneiro |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Fundect CNPq |
dc.contributor.author.fl_str_mv |
da Silva, Eulene Francisco Lourente, Elaine Pinheiro Reis Marchetti, Marlene Estevão Mercante, Fábio Martins Ferreira, Ana Karolina Teixeira Fujii, Gisele Carneiro |
dc.subject.por.fl_str_mv |
organic carbon; carbon management index; nitrogen; humic substances carbono orgânico; índice de manejo de carbono; nitrogênio; substâncias húmicas |
topic |
organic carbon; carbon management index; nitrogen; humic substances carbono orgânico; índice de manejo de carbono; nitrogênio; substâncias húmicas |
description |
The objective of this work was to evaluate the soil total organic carbon (TOC) and total nitrogen (TN) stocks, C and N in labile and recalcitrant fractions of the soil organic matter (SOM), and the C management index, in soils under integrated crop-livestock (ICL) system after four (ICL4) and eight years (ICL8) of settlement. For comparison purposes, other management systems were used: pasture and crop under no tillage (NT), besides native vegetation. The experiment was carried out in a completely randomized block design, with five replicates. The crop-livestock established in a period of eight years can reach a new steady state equivalent to the no-tillage with 23 years of implementation. There was accumulation in total organic carbon of 101.0 (ICL8) and 104.2 Mg ha-1 (NT), and N total stock of 5.5 (ICL8) and 5.8 Mg ha-1 (NT) in the 0–30 cm layer, as well as increase in the stock of labile and recalcitrant C and N fractions of SOM. For crop-livestock with eight years, the C management index of 88 was higher than other management systems, and not different from native vegetation (0–10 cm), however, it was similar to NT in the analysis of the entire profile (0–30 cm). |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-01-02 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/9068 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/9068 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/9068/6642 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/9068/4442 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1321-1331 Pesquisa Agropecuária Brasileira; v.46, n.10, out. 2011: Número Temático Sistemas de Integração Lavoura-Pecuária-Floresta; 1321-1331 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
repository.mail.fl_str_mv |
pab@sct.embrapa.br || sct.pab@embrapa.br |
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1793416667290664960 |