Soil particle aggregation improvement through no-tillage system

Detalhes bibliográficos
Autor(a) principal: Calegari, Ademir
Data de Publicação: 2006
Outros Autores: Castro Filho, Celso de, Tavares Filho, João, Ralisch, Ricardo, Guimarães, Maria de Fátima
Tipo de documento: Artigo
Idioma: por
Título da fonte: Semina. Ciências Agrárias (Online)
Texto Completo: https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2420
Resumo: The effects of no-tillage with and without crop rotation previously planned, conventional system including ploughing and disc harrowing on soil particles aggregation were evaluated and compared with native forest on an Red distroferric Oxisol with high clay content from western Paraná State. Soils were sampled from all treatments, adequately stored and soil aggregation indices determined were: the mean weight diameter (MWD), the geometric mean diameter (GMD) and the aggregate stability index (AS %). Soil organic carbon was also determined for the different treatments. The results showed highest soil organic carbon and also higher AS %, MWD and GMD for native forest area compared to all other treatments. The no-tillage system, cover crops use and crop rotation contributed to increase soil organic carbon levels, and also AS %, MWD and GMD in both localities and in both soil depths (0,0 – 0,10m and 0,10 – 0,20m). The conventional system, where soil are periodically disturbed provoking soil particles dispersion and soil aggregates collapse, promoted decreasing soil organic carbon levels compared to all other treatments, and also presented lower values for AS %, MWD and GMD, as well lowest aggregates > 2,00mm.
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spelling Soil particle aggregation improvement through no-tillage systemMelhoria da agregação do solo através do sistema plantio diretoAggregation indicesOrganic matterSoil coveringSoil organic carbonCrop rotation.Índices de agregaçãoMatéria orgânicaCobertura de soloCarbono orgânico do solo.The effects of no-tillage with and without crop rotation previously planned, conventional system including ploughing and disc harrowing on soil particles aggregation were evaluated and compared with native forest on an Red distroferric Oxisol with high clay content from western Paraná State. Soils were sampled from all treatments, adequately stored and soil aggregation indices determined were: the mean weight diameter (MWD), the geometric mean diameter (GMD) and the aggregate stability index (AS %). Soil organic carbon was also determined for the different treatments. The results showed highest soil organic carbon and also higher AS %, MWD and GMD for native forest area compared to all other treatments. The no-tillage system, cover crops use and crop rotation contributed to increase soil organic carbon levels, and also AS %, MWD and GMD in both localities and in both soil depths (0,0 – 0,10m and 0,10 – 0,20m). The conventional system, where soil are periodically disturbed provoking soil particles dispersion and soil aggregates collapse, promoted decreasing soil organic carbon levels compared to all other treatments, and also presented lower values for AS %, MWD and GMD, as well lowest aggregates > 2,00mm.O objetivo deste trabalho foi verificar os efeitos de sistemas de manejo na melhoria do solo, principalmente quanto aos índices de agregação do solo. Em um Latosolo Vermelho distroférrico muito argiloso, na região oeste do Paraná, foram avaliados os efeitos do plantio direto, com e sem rotação de culturas, e o sistema convencional (uma aração e duas gradagens), em comparação com a área de floresta, na capacidade de agregação das partículas do solo. O delineamento experimental foi de blocos ao acaso com três repetições. Os sistemas avaliados foram: 1) sistema plantio direto, incluindo plantas de cobertura e rotação de culturas (PD integral); 2) sistema plantio direto sem rotação de culturas previamente definida (PD tradicional); 3) sistema convencional (uma aração + duas gradagens no momento da implantação das culturas); e uma área de mata, utilizada como referência do estado original do solo. As amostras de solo foram coletadas em todos os tratamentos, e os índices de agregação do solo determinados foram: o diâmetro médio ponderado (DMP), o diâmetro médio geométrico (DMG) e o índice de estabilidade de agregados (IEA%). Também os teores de carbono orgânico foram determinados em todos tratamentos. Os maiores valores de carbono orgânico, e também IEA%, DMP, DMG foram encontrados na área de floresta, quando comparada aos demais tratamentos. O sistema de plantio direto, incluindo plantas de cobertura e rotação de culturas (PD integral) contribuiu para o aumento dos teores de carbono orgânico do solo, e também para um aumento do IEA%, DMP e DMG em ambos locais (Santa Helena e Entre Rios d’Oeste) em ambas profundidades do solo (0 – 10 e 0,10 – 0,20m). Os melhores índices de agregação observada são indicadores de qualidade no manejo desses solos. O sistema convencional provocou a dispersão das partículas de solo, e conseqüente diminuição dos índices de agregação (IEA %), provocando queda nos níveis de matéria orgânica do solo quando comparado aos demais tratamentos, e também apresentou os menores índices de DMP e DMG, assim como a mais baixa concentração de agregados > 2,00mm.UEL2006-06-30info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/242010.5433/1679-0359.2006v27n2p147Semina: Ciências Agrárias; Vol. 27 No. 2 (2006); 147-158Semina: Ciências Agrárias; v. 27 n. 2 (2006); 147-1581679-03591676-546Xreponame:Semina. Ciências Agrárias (Online)instname:Universidade Estadual de Londrina (UEL)instacron:UELporhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2420/2067Calegari, AdemirCastro Filho, Celso deTavares Filho, JoãoRalisch, RicardoGuimarães, Maria de Fátimainfo:eu-repo/semantics/openAccess2009-10-09T11:51:20Zoai:ojs.pkp.sfu.ca:article/2420Revistahttp://www.uel.br/revistas/uel/index.php/semagrariasPUBhttps://ojs.uel.br/revistas/uel/index.php/semagrarias/oaisemina.agrarias@uel.br1679-03591676-546Xopendoar:2009-10-09T11:51:20Semina. Ciências Agrárias (Online) - Universidade Estadual de Londrina (UEL)false
dc.title.none.fl_str_mv Soil particle aggregation improvement through no-tillage system
Melhoria da agregação do solo através do sistema plantio direto
title Soil particle aggregation improvement through no-tillage system
spellingShingle Soil particle aggregation improvement through no-tillage system
Calegari, Ademir
Aggregation indices
Organic matter
Soil covering
Soil organic carbon
Crop rotation.
Índices de agregação
Matéria orgânica
Cobertura de solo
Carbono orgânico do solo.
title_short Soil particle aggregation improvement through no-tillage system
title_full Soil particle aggregation improvement through no-tillage system
title_fullStr Soil particle aggregation improvement through no-tillage system
title_full_unstemmed Soil particle aggregation improvement through no-tillage system
title_sort Soil particle aggregation improvement through no-tillage system
author Calegari, Ademir
author_facet Calegari, Ademir
Castro Filho, Celso de
Tavares Filho, João
Ralisch, Ricardo
Guimarães, Maria de Fátima
author_role author
author2 Castro Filho, Celso de
Tavares Filho, João
Ralisch, Ricardo
Guimarães, Maria de Fátima
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Calegari, Ademir
Castro Filho, Celso de
Tavares Filho, João
Ralisch, Ricardo
Guimarães, Maria de Fátima
dc.subject.por.fl_str_mv Aggregation indices
Organic matter
Soil covering
Soil organic carbon
Crop rotation.
Índices de agregação
Matéria orgânica
Cobertura de solo
Carbono orgânico do solo.
topic Aggregation indices
Organic matter
Soil covering
Soil organic carbon
Crop rotation.
Índices de agregação
Matéria orgânica
Cobertura de solo
Carbono orgânico do solo.
description The effects of no-tillage with and without crop rotation previously planned, conventional system including ploughing and disc harrowing on soil particles aggregation were evaluated and compared with native forest on an Red distroferric Oxisol with high clay content from western Paraná State. Soils were sampled from all treatments, adequately stored and soil aggregation indices determined were: the mean weight diameter (MWD), the geometric mean diameter (GMD) and the aggregate stability index (AS %). Soil organic carbon was also determined for the different treatments. The results showed highest soil organic carbon and also higher AS %, MWD and GMD for native forest area compared to all other treatments. The no-tillage system, cover crops use and crop rotation contributed to increase soil organic carbon levels, and also AS %, MWD and GMD in both localities and in both soil depths (0,0 – 0,10m and 0,10 – 0,20m). The conventional system, where soil are periodically disturbed provoking soil particles dispersion and soil aggregates collapse, promoted decreasing soil organic carbon levels compared to all other treatments, and also presented lower values for AS %, MWD and GMD, as well lowest aggregates > 2,00mm.
publishDate 2006
dc.date.none.fl_str_mv 2006-06-30
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://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2420
10.5433/1679-0359.2006v27n2p147
url https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2420
identifier_str_mv 10.5433/1679-0359.2006v27n2p147
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://ojs.uel.br/revistas/uel/index.php/semagrarias/article/view/2420/2067
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 UEL
publisher.none.fl_str_mv UEL
dc.source.none.fl_str_mv Semina: Ciências Agrárias; Vol. 27 No. 2 (2006); 147-158
Semina: Ciências Agrárias; v. 27 n. 2 (2006); 147-158
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
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