Organic carbon pools in an Oxisol cultivated with vegetables under different managements
Autor(a) principal: | |
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Data de Publicação: | 2016 |
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/21416 |
Resumo: | The objective of this work was to evaluate the contents of total organic carbon (COT) and of the organic matter fractions in an Oxisol cultivated with vegetables under different soil management systems and with different cover crops. The experiment was carried out for six years in a randomized block design, in a 3x2 factorial arrangement with three soil management systems – no-tillage (SPD), minimum tillage (PPR), and conventional system (SPC) –, and two cover crops, one of maize and the other of maize intercropped with Stizolobium niveum (MM), with four replicates. COT levels, estimated for 0.00–0.30-m, soil depth were higher in SPD and PPR. Regardless of the evaluated soil depth, MM intercropped system promoted higher contents of particulate organic carbon (COP), which were strongly affected by straw incorporation. In all soil depths, negative correlations were observed between the contents of COP and those of carbon associated to minerals (COAM), which indicate the occurrence of priming effect. COT contents were positively correlated to those of COAM, stressing the importance of soil organic matter stabilization mechanisms for improving COT contents in the soil. |
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Organic carbon pools in an Oxisol cultivated with vegetables under different managementsCompartimentos de carbono orgânico em Latossolo cultivado com hortaliças sob diferentes manejoscarbon associated to minerals; particulate organic carbon; total organic carbon; priming effect; no-tillage for vegetables; carbon sequestrationcarbono associado a minerais; carbono orgânico particulado; carbono orgânico total; efeito "priming"; plantio direto de hortaliças; sequestro de carbonoThe objective of this work was to evaluate the contents of total organic carbon (COT) and of the organic matter fractions in an Oxisol cultivated with vegetables under different soil management systems and with different cover crops. The experiment was carried out for six years in a randomized block design, in a 3x2 factorial arrangement with three soil management systems – no-tillage (SPD), minimum tillage (PPR), and conventional system (SPC) –, and two cover crops, one of maize and the other of maize intercropped with Stizolobium niveum (MM), with four replicates. COT levels, estimated for 0.00–0.30-m, soil depth were higher in SPD and PPR. Regardless of the evaluated soil depth, MM intercropped system promoted higher contents of particulate organic carbon (COP), which were strongly affected by straw incorporation. In all soil depths, negative correlations were observed between the contents of COP and those of carbon associated to minerals (COAM), which indicate the occurrence of priming effect. COT contents were positively correlated to those of COAM, stressing the importance of soil organic matter stabilization mechanisms for improving COT contents in the soil. O objetivo deste trabalho foi avaliar os teores de carbono orgânico total (COT) e das frações granulométricas da matéria orgânica de um Latossolo Vermelho cultivado com hortaliças, sob diferentes sistemas de manejo e de cultivo de plantas de cobertura. O experimento foi realizado por seis anos, em delineamento de blocos ao caso, em arranjo fatorial 3x2, com três sistemas de manejo do solo – plantio direto (SPD), preparo reduzido (PPR) e preparo convencional (SPC) – e dois cultivos de cobertura, um de milho solteiro e outro de milho consorciado com mucuna‑cinza (Stizolobium niveum) (MM), com quatro repetições. Os teores de COT, estimados para a camada 0,00–0,30 m, foram maiores em SPD e PPR. Independentemente da profundidade avaliada, o consórcio MM promoveu os maiores teores de carbono orgânico particulado (COP), que foram fortemente influenciados pela incorporação da palhada. Em todas as camadas, observaram-se correlações negativas entre os teores de COP e os de carbono orgânico associado a minerais (COAM), indício de ocorrência do efeito "priming". Os teores de COT correlacionaram-se positivamente aos de COAM, o que destaca a importância de mecanismos de estabilização da matéria orgânica no incremento dos teores de COT no solo.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraLima, Carlos Eduardo PachecoFontenelle, Mariana RodriguesMadeira, Nuno RodrigoSilva, Juscimar daGuedes, Ítalo Moraes RochaSilva, Luciana Rodrigues BorbaSoares, Daiane Costa2016-07-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/21416Pesquisa Agropecuaria Brasileira; v.51, n.4, abr. 2016; 378-387Pesquisa Agropecuária Brasileira; v.51, n.4, abr. 2016; 378-3871678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/21416/13268https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/21416/13538Direitos autorais 2016 Pesquisa Agropecuária Brasileirainfo:eu-repo/semantics/openAccess2016-07-04T21:50:30Zoai:ojs.seer.sct.embrapa.br:article/21416Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2016-07-04T21:50:30Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements Compartimentos de carbono orgânico em Latossolo cultivado com hortaliças sob diferentes manejos |
title |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements |
spellingShingle |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements Lima, Carlos Eduardo Pacheco carbon associated to minerals; particulate organic carbon; total organic carbon; priming effect; no-tillage for vegetables; carbon sequestration carbono associado a minerais; carbono orgânico particulado; carbono orgânico total; efeito "priming"; plantio direto de hortaliças; sequestro de carbono |
title_short |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements |
title_full |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements |
title_fullStr |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements |
title_full_unstemmed |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements |
title_sort |
Organic carbon pools in an Oxisol cultivated with vegetables under different managements |
author |
Lima, Carlos Eduardo Pacheco |
author_facet |
Lima, Carlos Eduardo Pacheco Fontenelle, Mariana Rodrigues Madeira, Nuno Rodrigo Silva, Juscimar da Guedes, Ítalo Moraes Rocha Silva, Luciana Rodrigues Borba Soares, Daiane Costa |
author_role |
author |
author2 |
Fontenelle, Mariana Rodrigues Madeira, Nuno Rodrigo Silva, Juscimar da Guedes, Ítalo Moraes Rocha Silva, Luciana Rodrigues Borba Soares, Daiane Costa |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Lima, Carlos Eduardo Pacheco Fontenelle, Mariana Rodrigues Madeira, Nuno Rodrigo Silva, Juscimar da Guedes, Ítalo Moraes Rocha Silva, Luciana Rodrigues Borba Soares, Daiane Costa |
dc.subject.por.fl_str_mv |
carbon associated to minerals; particulate organic carbon; total organic carbon; priming effect; no-tillage for vegetables; carbon sequestration carbono associado a minerais; carbono orgânico particulado; carbono orgânico total; efeito "priming"; plantio direto de hortaliças; sequestro de carbono |
topic |
carbon associated to minerals; particulate organic carbon; total organic carbon; priming effect; no-tillage for vegetables; carbon sequestration carbono associado a minerais; carbono orgânico particulado; carbono orgânico total; efeito "priming"; plantio direto de hortaliças; sequestro de carbono |
description |
The objective of this work was to evaluate the contents of total organic carbon (COT) and of the organic matter fractions in an Oxisol cultivated with vegetables under different soil management systems and with different cover crops. The experiment was carried out for six years in a randomized block design, in a 3x2 factorial arrangement with three soil management systems – no-tillage (SPD), minimum tillage (PPR), and conventional system (SPC) –, and two cover crops, one of maize and the other of maize intercropped with Stizolobium niveum (MM), with four replicates. COT levels, estimated for 0.00–0.30-m, soil depth were higher in SPD and PPR. Regardless of the evaluated soil depth, MM intercropped system promoted higher contents of particulate organic carbon (COP), which were strongly affected by straw incorporation. In all soil depths, negative correlations were observed between the contents of COP and those of carbon associated to minerals (COAM), which indicate the occurrence of priming effect. COT contents were positively correlated to those of COAM, stressing the importance of soil organic matter stabilization mechanisms for improving COT contents in the soil. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-07-04 |
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/21416 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/21416 |
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/21416/13268 https://seer.sct.embrapa.br/index.php/pab/article/downloadSuppFile/21416/13538 |
dc.rights.driver.fl_str_mv |
Direitos autorais 2016 Pesquisa Agropecuária Brasileira info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Direitos autorais 2016 Pesquisa Agropecuária Brasileira |
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.51, n.4, abr. 2016; 378-387 Pesquisa Agropecuária Brasileira; v.51, n.4, abr. 2016; 378-387 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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1793416689150328832 |