Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Semina. Ciências Agrárias (Online) |
Texto Completo: | https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20459 |
Resumo: | Mineralization of organic residues deposited on the soil surface in a no-till system (NT) maintains a continuous flow of different forms of carbon (C), which might interfere with densimetric fractions of soil organic matter (SOM). Currently, there are few studies on variations in these fractions in NT areas with different deployment times in the Cerrado region. Thus, the objective of this study was to evaluate the total C, nitrogen (N), and 13C in the soil, as well as to quantify the mass and contents of C, N, and 13C in the light and heavy fractions of SOM extracted using different solutions (water, sodium iodide [NaI], and sodium polytungstate [SPT]) in areas of Cerrado, pastures, and NT with different deployment times with Distroferric Red Latosol soil. The study areas are located in Montividiu, Goiás (GO), Brazil: (1) pasture of Brachiaria decumbens (PA); (2) NT with three years of deployment with soybean in summer and fallow instead of a second crop (NT3); (3) NT with 15 years of deployment with soybean in the summer and maize/sorghum as the second crop (NT15); and (4) NT with 20 years of deployment with soybean in the summer and maize as the second crop (NT20). These areas were compared to an area of native Cerrado sensu stricto (CE). The NT according to the deployment time showed an increase in the contents of C (0-0.05 m) and N (0-0.2 m) in the soil. The origin of C in the soil of the NT areas is associated with C4 plants; however, in up to 0.2 m of the soil profile, the 13C contents reduced according to NT deployment years. Extraction of light-fraction organic matter (LFOM) with SPT better represents this SOM fraction quantitatively and qualitatively than extraction of LFOM with water and NaI. This pattern is evident because of a greater consistency in the mass, C, N, and 13C contents of the LFOM extracted with SPT among the evaluated areas and the lower C content in residual particulate organic matter among the extractants. |
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Semina. Ciências Agrárias (Online) |
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Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, BrazilFracionamento densimétrico da matéria orgânica em uma cronossequência de agricultura em áreas de plantio direto no CerradoWaterSodium iodideRed LatosolLight-fraction organic matterSodium polytungstateSoil management systems.ÁguaIodeto de sódioLatossolo VermelhoMatéria orgânica levePolitungstato de sódioSistemas de manejo do solo.Mineralization of organic residues deposited on the soil surface in a no-till system (NT) maintains a continuous flow of different forms of carbon (C), which might interfere with densimetric fractions of soil organic matter (SOM). Currently, there are few studies on variations in these fractions in NT areas with different deployment times in the Cerrado region. Thus, the objective of this study was to evaluate the total C, nitrogen (N), and 13C in the soil, as well as to quantify the mass and contents of C, N, and 13C in the light and heavy fractions of SOM extracted using different solutions (water, sodium iodide [NaI], and sodium polytungstate [SPT]) in areas of Cerrado, pastures, and NT with different deployment times with Distroferric Red Latosol soil. The study areas are located in Montividiu, Goiás (GO), Brazil: (1) pasture of Brachiaria decumbens (PA); (2) NT with three years of deployment with soybean in summer and fallow instead of a second crop (NT3); (3) NT with 15 years of deployment with soybean in the summer and maize/sorghum as the second crop (NT15); and (4) NT with 20 years of deployment with soybean in the summer and maize as the second crop (NT20). These areas were compared to an area of native Cerrado sensu stricto (CE). The NT according to the deployment time showed an increase in the contents of C (0-0.05 m) and N (0-0.2 m) in the soil. The origin of C in the soil of the NT areas is associated with C4 plants; however, in up to 0.2 m of the soil profile, the 13C contents reduced according to NT deployment years. Extraction of light-fraction organic matter (LFOM) with SPT better represents this SOM fraction quantitatively and qualitatively than extraction of LFOM with water and NaI. This pattern is evident because of a greater consistency in the mass, C, N, and 13C contents of the LFOM extracted with SPT among the evaluated areas and the lower C content in residual particulate organic matter among the extractants.A mineralização dos Resíduos Orgânicos depositados na superficie do solo de qualquer Sistema de Plantio Direto (SPD) mantém hum Fluxo contínuo de Diferentes Formas de carbono, podendo interferir NAS frações densimétricas da materia orgánica fazer a solo (MOS). Atualmente, São escassos Resultados de Pesquisa Que avaliem Às Variações destas frações em áreas de SPD com Diferentes ano de Implantação na Região do cerrado. Dessa forma, o Objetivo Deste Trabalho foi avaliar o C, N e 13C totais do Solo, Bem como, quantificar a massa, C, N e 13C das frações leves e Pesadas da MOS extraídas com Diferentes Soluções (Água, iodeto de sodio - Nal e politungstato de Sódio - PTS) em áreas de Cerrado, Pastagem e SPD com Diferentes ano de Implantação soluçar hum Latossolo Vermelho Distroférrico. Como áreas de Estudo encontram-se localizadas em Montividiu (GO), e apresentam como seguintes Características: 1) Pastagem de Brachiaria decumbens (PA); 2) SPD com 3 anos de Implantação com cultivo de soja no verão e pousio na safrinha (SPD3); 3) SPD com 15 Anos de Implantação com Rotação soja no verão - milho / sorgo safrinha (SPD15) e 4) SPD com 20 anos de Implantação com Rotação soja no verão - safrinha milho (SPD20); Sendo estas áreas comparadas a Uma área de cerrado nativo stricto sensu (CE). O SPD em Função do Tempo de Implantação aumentou OS teores de C (0,0-0,05 m) e N (0,0-0,20 m) fazer a solo. A Origem da carbono do solo de NAS áreas de SPD E Referente à Plantas do ciclo fotossintético C4, não entanto, Verifica-se that Até OS 0,20 m do perfil do solo, sistema operacional Resultados de 13C estao reduzindo em Função dos ano de Adoção fazer SPD. A Extração da materia orgánica leve (MOL) com PTS Melhor representação quantitativamente e qualitativamente ESSA Fração da MOS, QUANDO Comparada à extraída com Água e Nal. Esse Padrão FICA Evidente, devido a Maior coerência nsa Resultados de massa, C, N e 13C da MOL extraída com PTS between como áreas avaliadas e cabelo Seu menor Conteúdo de carbono na materia orgánica particulada residuais (MOPres) extratores Entre OS.UEL2016-04-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPesquisa de campoapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2045910.5433/1679-0359.2016v37n2p595Semina: Ciências Agrárias; Vol. 37 No. 2 (2016); 595-610Semina: Ciências Agrárias; v. 37 n. 2 (2016); 595-6101679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELenghttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20459/18581http://creativecommons.org/licenses/by-nc/4.0info:eu-repo/semantics/openAccessGuareschi, Roni FernandesPereira, Marcos GervasioPerin, Adriano2022-12-01T16:02:56Zoai:ojs.pkp.sfu.ca:article/20459Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2022-12-01T16:02:56Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false |
dc.title.none.fl_str_mv |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil Fracionamento densimétrico da matéria orgânica em uma cronossequência de agricultura em áreas de plantio direto no Cerrado |
title |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil |
spellingShingle |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil Guareschi, Roni Fernandes Water Sodium iodide Red Latosol Light-fraction organic matter Sodium polytungstate Soil management systems. Água Iodeto de sódio Latossolo Vermelho Matéria orgânica leve Politungstato de sódio Sistemas de manejo do solo. |
title_short |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil |
title_full |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil |
title_fullStr |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil |
title_full_unstemmed |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil |
title_sort |
Densimetric fractionation of organic matter in an agricultural chronosequence in no-till areas in the Cerrado region, Brazil |
author |
Guareschi, Roni Fernandes |
author_facet |
Guareschi, Roni Fernandes Pereira, Marcos Gervasio Perin, Adriano |
author_role |
author |
author2 |
Pereira, Marcos Gervasio Perin, Adriano |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Guareschi, Roni Fernandes Pereira, Marcos Gervasio Perin, Adriano |
dc.subject.por.fl_str_mv |
Water Sodium iodide Red Latosol Light-fraction organic matter Sodium polytungstate Soil management systems. Água Iodeto de sódio Latossolo Vermelho Matéria orgânica leve Politungstato de sódio Sistemas de manejo do solo. |
topic |
Water Sodium iodide Red Latosol Light-fraction organic matter Sodium polytungstate Soil management systems. Água Iodeto de sódio Latossolo Vermelho Matéria orgânica leve Politungstato de sódio Sistemas de manejo do solo. |
description |
Mineralization of organic residues deposited on the soil surface in a no-till system (NT) maintains a continuous flow of different forms of carbon (C), which might interfere with densimetric fractions of soil organic matter (SOM). Currently, there are few studies on variations in these fractions in NT areas with different deployment times in the Cerrado region. Thus, the objective of this study was to evaluate the total C, nitrogen (N), and 13C in the soil, as well as to quantify the mass and contents of C, N, and 13C in the light and heavy fractions of SOM extracted using different solutions (water, sodium iodide [NaI], and sodium polytungstate [SPT]) in areas of Cerrado, pastures, and NT with different deployment times with Distroferric Red Latosol soil. The study areas are located in Montividiu, Goiás (GO), Brazil: (1) pasture of Brachiaria decumbens (PA); (2) NT with three years of deployment with soybean in summer and fallow instead of a second crop (NT3); (3) NT with 15 years of deployment with soybean in the summer and maize/sorghum as the second crop (NT15); and (4) NT with 20 years of deployment with soybean in the summer and maize as the second crop (NT20). These areas were compared to an area of native Cerrado sensu stricto (CE). The NT according to the deployment time showed an increase in the contents of C (0-0.05 m) and N (0-0.2 m) in the soil. The origin of C in the soil of the NT areas is associated with C4 plants; however, in up to 0.2 m of the soil profile, the 13C contents reduced according to NT deployment years. Extraction of light-fraction organic matter (LFOM) with SPT better represents this SOM fraction quantitatively and qualitatively than extraction of LFOM with water and NaI. This pattern is evident because of a greater consistency in the mass, C, N, and 13C contents of the LFOM extracted with SPT among the evaluated areas and the lower C content in residual particulate organic matter among the extractants. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-26 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Pesquisa de campo |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20459 10.5433/1679-0359.2016v37n2p595 |
url |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20459 |
identifier_str_mv |
10.5433/1679-0359.2016v37n2p595 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/20459/18581 |
dc.rights.driver.fl_str_mv |
http://creativecommons.org/licenses/by-nc/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc/4.0 |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
UEL |
publisher.none.fl_str_mv |
UEL |
dc.source.none.fl_str_mv |
Semina: Ciências Agrárias; Vol. 37 No. 2 (2016); 595-610 Semina: Ciências Agrárias; v. 37 n. 2 (2016); 595-610 1679-0359 1676-546X reponame:Semina. Ciências Agrárias (Online) instname:Universidade Estadual de Londrina (UEL) instacron:UEL |
instname_str |
Universidade Estadual de Londrina (UEL) |
instacron_str |
UEL |
institution |
UEL |
reponame_str |
Semina. Ciências Agrárias (Online) |
collection |
Semina. Ciências Agrárias (Online) |
repository.name.fl_str_mv |
Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL) |
repository.mail.fl_str_mv |
semina.agrarias@uel.br |
_version_ |
1799306073341952000 |