Labile and recalcitrant fractions of soil organic matter under integrated crop‑livestock system

Detalhes bibliográficos
Autor(a) principal: da Silva, Eulene Francisco
Data de Publicação: 2012
Outros Autores: Lourente, Elaine Pinheiro Reis, Marchetti, Marlene Estevão, Mercante, Fábio Martins, Ferreira, Ana Karolina Teixeira, Fujii, Gisele Carneiro
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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spelling 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
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