Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System

Detalhes bibliográficos
Autor(a) principal: Nascente, Adriano Stephan
Data de Publicação: 2015
Outros Autores: Li, Yuncong, Crusciol, Carlos Alexandre Costa
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/01000683rbcs20140388
http://hdl.handle.net/11449/157539
Resumo: Soil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively correlated with bulk density in the 0.00-0.10 m layer.
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spelling Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage SystemAgregação do Solo, Concentração de Carbono Orgânico e Densidade do Solo Em Razão De Espécies De Plantas De Cobertura No Sistema De Plantio DiretoBrachiaria brizanthaBrachiaria ruziziensisno-tillage systemPanicum maximumPennisetum glaucumsoil managementBrachiaria brizanthaBrachiaria ruziziensissistema de plantio diretoPanicum maximumPennisetum glaucummanejo do soloSoil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively correlated with bulk density in the 0.00-0.10 m layer.A agregação do solo e a distribuição do carbono orgânico total (COT) podem ser influenciadas pelo preparo do solo e plantas de cobertura. O objetivo desta pesquisa foi determinar os efeitos da rotação de culturas com plantas de cobertura na agregação do solo, a concentração de COT nas frações dos agregados do solo e a densidade do solo de solo cultivado em sistema de plantio direto (SPD) e sistema de preparo convencional do solo (PC, uma aração e duas gradagens). Este foi um estudo de três anos, com rotações entre plantas de cobertura-arroz-planta de cobertura-arroz no Cerrado brasileiro. O delineamento experimental foi de blocos casualizados, com seis tratamentos e três repetições. As plantas de cobertura (tratamentos) foram: pousio, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha e milheto (Pennisetum glaucum). Um tratamento adicional foi incluído com pousio mais CTS como controle. As amostras de solo foram coletadas nas profundidades de 0,00-0,05 m; 0,05-0,10 m; e 0,10-0,20 m, após a segunda colheita de arroz. Os tratamentos em SPD proporcionaram maior estabilidade nos agregados do solo (variando de 86,33 a 95,37 %) do que PC, pousio arado (variando de 74,62 a 85,94 %). O PC proporcionou a maior quantidade de agregados menores que 2 mm. As plantas de cobertura interferiram diferentemente na densidade do solo; e o tratamento milheto no SPD proporcionou os menores valores. As plantas de cobertura sem incorporação proporcionaram maior acúmulo de COT nas camadas superficiais do solo. A concentração do COT correlacionou-se positivamente com o índice de estabilidade de agregados em todas as camadas e negativamente com a densidade do solo na profundidade de 0,00-0,10 m.Empresa Brasileira de Pesquisa Agropecuária Centro Nacional de Pesquisa em Arroz e FeijãoUniversity of Florida Soil and Water Science Department Tropical Research and Education CenterUniversidade Estadual de São Paulo Departamento de Produção VegetalSociedade Brasileira de Ciência do SoloEmpresa Brasileira de Pesquisa Agropecuária Centro Nacional de Pesquisa em Arroz e FeijãoUniversity of Florida Soil and Water Science Department Tropical Research and Education CenterUniversidade Estadual de São Paulo Departamento de Produção VegetalNascente, Adriano StephanLi, YuncongCrusciol, Carlos Alexandre Costa2018-11-12T17:25:49Z2018-11-12T17:25:49Z2015-06-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article871-879application/pdfhttp://dx.doi.org/10.1590/01000683rbcs20140388Revista Brasileira de Ciência do Solo. Sociedade Brasileira de Ciência do Solo, v. 39, n. 3, p. 871-879, 2015.0100-0683http://hdl.handle.net/11449/15753910.1590/01000683rbcs20140388S0100-06832015000300871S0100-06832015000300871.pdfSciELOreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciência do Solo0,679info:eu-repo/semantics/openAccess2023-12-24T06:15:20Zoai:repositorio.unesp.br:11449/157539Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-12-24T06:15:20Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
Agregação do Solo, Concentração de Carbono Orgânico e Densidade do Solo Em Razão De Espécies De Plantas De Cobertura No Sistema De Plantio Direto
title Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
spellingShingle Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
Nascente, Adriano Stephan
Brachiaria brizantha
Brachiaria ruziziensis
no-tillage system
Panicum maximum
Pennisetum glaucum
soil management
Brachiaria brizantha
Brachiaria ruziziensis
sistema de plantio direto
Panicum maximum
Pennisetum glaucum
manejo do solo
title_short Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
title_full Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
title_fullStr Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
title_full_unstemmed Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
title_sort Soil Aggregation, Organic Carbon Concentration, and Soil Bulk Density As Affected by Cover Crop Species in a No-Tillage System
author Nascente, Adriano Stephan
author_facet Nascente, Adriano Stephan
Li, Yuncong
Crusciol, Carlos Alexandre Costa
author_role author
author2 Li, Yuncong
Crusciol, Carlos Alexandre Costa
author2_role author
author
dc.contributor.none.fl_str_mv Empresa Brasileira de Pesquisa Agropecuária Centro Nacional de Pesquisa em Arroz e Feijão
University of Florida Soil and Water Science Department Tropical Research and Education Center
Universidade Estadual de São Paulo Departamento de Produção Vegetal
dc.contributor.author.fl_str_mv Nascente, Adriano Stephan
Li, Yuncong
Crusciol, Carlos Alexandre Costa
dc.subject.por.fl_str_mv Brachiaria brizantha
Brachiaria ruziziensis
no-tillage system
Panicum maximum
Pennisetum glaucum
soil management
Brachiaria brizantha
Brachiaria ruziziensis
sistema de plantio direto
Panicum maximum
Pennisetum glaucum
manejo do solo
topic Brachiaria brizantha
Brachiaria ruziziensis
no-tillage system
Panicum maximum
Pennisetum glaucum
soil management
Brachiaria brizantha
Brachiaria ruziziensis
sistema de plantio direto
Panicum maximum
Pennisetum glaucum
manejo do solo
description Soil aggregation and the distribution of total organic carbon (TOC) may be affected by soil tillage and cover crops. The objective of this study was to determine the effects of crop rotation with cover crops on soil aggregation, TOC concentration in the soil aggregate fractions, and soil bulk density under a no-tillage system (NTS) and conventional tillage system (CTS, one plowing and two disking). This was a three-year study with cover crop/rice/cover crop/rice rotations in the Brazilian Cerrado. A randomized block experimental design with six treatments and three replications was used. The cover crops (treatments) were: fallow, Panicum maximum, Brachiaria ruziziensis, Brachiaria brizantha, and millet (Pennisetum glaucum). An additional treatment, fallow plus CTS, was included as a control. Soil samples were collected at the depths of 0.00-0.05 m, 0.05-0.10 m, and 0.10-0.20 m after the second rice harvest. The treatments under the NTS led to greater stability in the soil aggregates (ranging from 86.33 to 95.37 %) than fallow plus CTS (ranging from 74.62 to 85.94 %). Fallow plus CTS showed the highest number of aggregates smaller than 2 mm. The cover crops affected soil bulk density differently, and the millet treatment in the NTS had the lowest values. The cover crops without incorporation provided the greatest accumulation of TOC in the soil surface layers. The TOC concentration was positively correlated with the aggregate stability index in all layers and negatively correlated with bulk density in the 0.00-0.10 m layer.
publishDate 2015
dc.date.none.fl_str_mv 2015-06-01
2018-11-12T17:25:49Z
2018-11-12T17:25:49Z
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 http://dx.doi.org/10.1590/01000683rbcs20140388
Revista Brasileira de Ciência do Solo. Sociedade Brasileira de Ciência do Solo, v. 39, n. 3, p. 871-879, 2015.
0100-0683
http://hdl.handle.net/11449/157539
10.1590/01000683rbcs20140388
S0100-06832015000300871
S0100-06832015000300871.pdf
url http://dx.doi.org/10.1590/01000683rbcs20140388
http://hdl.handle.net/11449/157539
identifier_str_mv Revista Brasileira de Ciência do Solo. Sociedade Brasileira de Ciência do Solo, v. 39, n. 3, p. 871-879, 2015.
0100-0683
10.1590/01000683rbcs20140388
S0100-06832015000300871
S0100-06832015000300871.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Revista Brasileira de Ciência do Solo
0,679
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 871-879
application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
publisher.none.fl_str_mv Sociedade Brasileira de Ciência do Solo
dc.source.none.fl_str_mv SciELO
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1797790093546618880

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