Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/844 |
Resumo: | Soil organic carbon (SOC) is an important indicator of soil quality, as its levels and stocks can change by soil preparation. This study aimed to evaluate SOC stocks on a clayey Oxisol cultivated with coffee and subject to different weed control systems in southern Minas Gerais, Brazil. The experimental design was in randomized blocks, and weed control systems were: no weeding, manual weeding, pre-emergence herbicide, post-emergence herbicide, rotary tiller, rotary mowers and disk harrow. Undisturbed soil samples were collected at two positions in the coffee plantation (tire tracks and planting line), at depths of 0-3, 10-13, and 25-28 cm. A nearby native forest was sampled as a reference. A higher bulk density of soils under coffee plantations occurred compared to soil under the forest. There was little difference between SOC concentrations in the plating line in relation to the native forest, but for the tire track position, the amount of SOC was generally lower. After correction for soil compaction, it was estimated a loss of ca. 20% in SOC stock for the 0-30 cm depth for herbicide post-emergence, rotary tiller, manual weeding and disk harrow, and a 35% loss when using herbicide pre-emergence. SOC stocks under no weeding and rotary mowers did not differ from native forest (37 M-1g ha SOC), indicating that the rotary mower, which allows temporary growth of weeds and does not disrupt soil structure, is the most appropriate weed control for the preservation of COS in coffee plantations. |
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Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasorasSoil organic carbon stocks in coffee plantations under different weed control systemsMatéria orgânica do soloCoffea arabica L.Erva daninhaSoil organic carbon (SOC) is an important indicator of soil quality, as its levels and stocks can change by soil preparation. This study aimed to evaluate SOC stocks on a clayey Oxisol cultivated with coffee and subject to different weed control systems in southern Minas Gerais, Brazil. The experimental design was in randomized blocks, and weed control systems were: no weeding, manual weeding, pre-emergence herbicide, post-emergence herbicide, rotary tiller, rotary mowers and disk harrow. Undisturbed soil samples were collected at two positions in the coffee plantation (tire tracks and planting line), at depths of 0-3, 10-13, and 25-28 cm. A nearby native forest was sampled as a reference. A higher bulk density of soils under coffee plantations occurred compared to soil under the forest. There was little difference between SOC concentrations in the plating line in relation to the native forest, but for the tire track position, the amount of SOC was generally lower. After correction for soil compaction, it was estimated a loss of ca. 20% in SOC stock for the 0-30 cm depth for herbicide post-emergence, rotary tiller, manual weeding and disk harrow, and a 35% loss when using herbicide pre-emergence. SOC stocks under no weeding and rotary mowers did not differ from native forest (37 M-1g ha SOC), indicating that the rotary mower, which allows temporary growth of weeds and does not disrupt soil structure, is the most appropriate weed control for the preservation of COS in coffee plantations.O carbono orgânico no solo (COS) é um importante indicador da qualidade do solo, pois seus teores e estoques podem ser alterados conforme o sistema de preparo do solo. Objetivou-se neste trabalho avaliar os estoques de COS em um Latossolo Vermelho distroférrico argiloso cultivado com cafeeiros (Coffea arabica L) e submetido a diferentes manejos de plantas invasoras no sul de Minas Gerais. O delineamento experimental foi em blocos ao acaso, sendo os tratamentos os seguintes métodos de controle de plantas invasoras: sem capina, capina manual, herbicida de pré-emergência, herbicida de pós-emergência, enxada rotativa, roçadora e grade. Amostras de solo com estrutura indeformada foram coletadas em duas posições (entrelinha e linha do tráfego), nas profundidades de 0–3, 10–13 e 25–28 cm. Uma mata nativa adjacente foi amostrada como referência. Verificou-se maior densidade do solo na área sob cafezal em comparação ao solo sob a mata. Houve pouca diferença entre o teor de COS da posição entrelinha dos cafeeiros em relação àquele sob mata, mas para a posição linha de tráfego, o teor de COS foi menor. Após correção para a compactação do solo, verificou-se perda de aproximadamente 20% nos estoque de COS a 0-30 cm quando se utilizou herbicida de pós-emergência, enxada rotativa,capina manual e grade, e perdas de 35%, quando se utilizou herbicida de pré-emergência. Os manejos sem capina e roçadora não diferiram da mata nativa (37 Mg COS ha-1), indicando que a roçadora, por permitir crescimento temporário das invasoras e não revolver o solo, é o controle mais apropriado à conservação do COS em cafezais.2013-07-25T14:06:49Z2013-07-25T14:06:49Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCOGO, F. et al. Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras. Semina: Ciências Agrárias, Londrina, v. 34, n. 3, p. 1089-1098, maio/jun. 2013.http://repositorio.ufla.br/jspui/handle/1/844Semina: Ciências Agráriasreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLACogo, FrancianeAraujo-Junior, Cezar FranciscoZinn, Yuri LopesDias Junior, Moacir de SouzaAlcântara, Elifas Nunes deGuimarães, Paulo Tácito Gontijoinfo:eu-repo/semantics/openAccesspor2013-07-25T14:07:04Zoai:localhost:1/844Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2013-07-25T14:07:04Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras Soil organic carbon stocks in coffee plantations under different weed control systems |
title |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras |
spellingShingle |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras Cogo, Franciane Matéria orgânica do solo Coffea arabica L. Erva daninha |
title_short |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras |
title_full |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras |
title_fullStr |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras |
title_full_unstemmed |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras |
title_sort |
Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras |
author |
Cogo, Franciane |
author_facet |
Cogo, Franciane Araujo-Junior, Cezar Francisco Zinn, Yuri Lopes Dias Junior, Moacir de Souza Alcântara, Elifas Nunes de Guimarães, Paulo Tácito Gontijo |
author_role |
author |
author2 |
Araujo-Junior, Cezar Francisco Zinn, Yuri Lopes Dias Junior, Moacir de Souza Alcântara, Elifas Nunes de Guimarães, Paulo Tácito Gontijo |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Cogo, Franciane Araujo-Junior, Cezar Francisco Zinn, Yuri Lopes Dias Junior, Moacir de Souza Alcântara, Elifas Nunes de Guimarães, Paulo Tácito Gontijo |
dc.subject.por.fl_str_mv |
Matéria orgânica do solo Coffea arabica L. Erva daninha |
topic |
Matéria orgânica do solo Coffea arabica L. Erva daninha |
description |
Soil organic carbon (SOC) is an important indicator of soil quality, as its levels and stocks can change by soil preparation. This study aimed to evaluate SOC stocks on a clayey Oxisol cultivated with coffee and subject to different weed control systems in southern Minas Gerais, Brazil. The experimental design was in randomized blocks, and weed control systems were: no weeding, manual weeding, pre-emergence herbicide, post-emergence herbicide, rotary tiller, rotary mowers and disk harrow. Undisturbed soil samples were collected at two positions in the coffee plantation (tire tracks and planting line), at depths of 0-3, 10-13, and 25-28 cm. A nearby native forest was sampled as a reference. A higher bulk density of soils under coffee plantations occurred compared to soil under the forest. There was little difference between SOC concentrations in the plating line in relation to the native forest, but for the tire track position, the amount of SOC was generally lower. After correction for soil compaction, it was estimated a loss of ca. 20% in SOC stock for the 0-30 cm depth for herbicide post-emergence, rotary tiller, manual weeding and disk harrow, and a 35% loss when using herbicide pre-emergence. SOC stocks under no weeding and rotary mowers did not differ from native forest (37 M-1g ha SOC), indicating that the rotary mower, which allows temporary growth of weeds and does not disrupt soil structure, is the most appropriate weed control for the preservation of COS in coffee plantations. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-07-25T14:06:49Z 2013-07-25T14:06:49Z 2013 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
COGO, F. et al. Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras. Semina: Ciências Agrárias, Londrina, v. 34, n. 3, p. 1089-1098, maio/jun. 2013. http://repositorio.ufla.br/jspui/handle/1/844 |
identifier_str_mv |
COGO, F. et al. Estoques de carbono orgânico do solo em cafezais sob diferentes sistemas de controle de plantas invasoras. Semina: Ciências Agrárias, Londrina, v. 34, n. 3, p. 1089-1098, maio/jun. 2013. |
url |
http://repositorio.ufla.br/jspui/handle/1/844 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
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openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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Semina: Ciências Agrárias reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
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Universidade Federal de Lavras (UFLA) |
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UFLA |
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UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
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nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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