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Agregação de um argissolo sob pomar de goiabeiras após aplicação de resíduos da indústria processadora de goiaba Rev. Bras. Frutic.
Seben Junior,Getulio de Freitas; Kuhnen,Fernando; Sylvestre,Thiago de Barros; Almeida,Cinara Xavier de; Centurion,José Frederico.
A utilização de resíduos da indústria de processamento de frutas na agricultura pode proporcionar melhorias à qualidade do solo. Dessa forma, objetivou-se com este estudo avaliar o efeito da aplicação de resíduos de sementes de goiaba na agregação e no estoque de carbono orgânico do solo (EC). O experimento esteve inserido em um pomar comercial irrigado de goiabeiras (cv. Paluma), com sete anos de idade, sobre um Argissolo Vermelho-Amarelo distrófico típico. O delineamento experimental foi em blocos casualizados e parcelas subdivididas, sendo cinco tratamentos (doses de: 0;9;18;27 e 36 Mg ha-1 de resíduo) e duas camadas de solo (0-0,10 e 0,10-0,20 m). Foi avaliado o mesmo tipo de solo sobre mata nativa adjacente à área experimental. As análises realizadas...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agregação; Estrutura do solo; Estoque de carbono do solo.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452011000400028
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Effect of cropping systems in no-till farming on the quality of a Brazilian Oxisol Rev. Bras. Ciênc. Solo
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
The no-till system with complex cropping sequences may improve the structural quality and carbon (C) sequestration in soils of the tropics. Thus, the objective of this study was to evaluate the effects of cropping sequences after eight years under the no-till system on the physical properties and C sequestration in an Oxisol in the municipality of Jaboticabal, Sao Paulo, Brazil. A randomized split-block design with three replications was used. The treatments were combinations of three summer cropping sequences - corn/corn (Zea mays L.) (CC), soybean/soybean (Glycine max L. Merryll) (SS), and soybean-corn (SC); and seven winter crops - corn, sunflower (Helianthus annuus L.), oilseed radish (Raphanus sativus L.), pearl millet (Pennisetum americanum (L.)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Crop rotation; Winter crops; Soil aggregates; Least limiting water range; Bulk density.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400023
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Physical quality of an Oxisol under no-tillage subjected to different cropping systems PAB
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
Abstract The objective of this work was to evaluate the physical quality of an Oxisol under no-tillage subjected to different crop rotations and crop sequences. The experiment was carried out in a clayey Oxisol, during six years, in a randomized complete block design, with strip plots and three replicates. The following physical indicators of soil quality were evaluated: soil density and carbon content, as well as mean weight diameter and tensile strength of aggregates. Treatments consisted of three summer crop rotations - corn/corn (Zea mays), soybean/soybean (Glycine max), and soybean/corn - and of seven second crops (crop sequences) - corn, sunflower (Helianthus annuus), oilseed radish (Raphanus sativus), pearl millet (Pennisetum americanum), pigeon pea...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon sequestration; Crop rotation; Diameter of aggregates; Soil density; Soil organic carbon; Tensile strength.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901568
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Soil aggregation according to the dynamics of carbon and nitrogen in soil under different cropping systems PAB
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
Abstract The objective of this work was to evaluate total soil carbon and nitrogen, as well as their contents in particulate and mineral-associated C fractions; to determine C stock and sequestration rates in the soil; and to verify the effect of C and N contents on soil aggregation, using different crop rotations and crop sequences under no-tillage. The study was carried out for nine years in a clayey Oxisol. The treatments consisted of different cropping systems formed by the combination of three summer crops (cropped until March) - corn (Zea mays) monocropping, soybean (Glycine max) monocropping, and soybean/corn rotation - and seven second crops (crop successions). Soil samples were taken at the 0.00-0.10-m layer for physical fractionation of C and N,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon sequestration; Carbon stocks; Cover crops; Crop rotation; Soil aggregates; Soil organic matter.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901652
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The effects of land use and soil management on the physical properties of an Oxisol in Southeast Brazil Rev. Bras. Ciênc. Solo
Seben Junior,Getulio de Freitas; Corá,José Eduardo; Lal,Rattan.
Soils of the tropics are prone to a decrease in quality after conversion from native forest (FO) to a conventional tillage system (CT). However, the adoption of no-tillage (NT) and complex crop rotations may improve soil structural quality. Thus, the aim of this study was to evaluate the physical properties of an Oxisol under FO, CT, and three summer crop sequences in NT: continuous corn (NTcc), continuous soybean (NTcs), and a soybean/corn rotation (NTscr). Both NT and CT decreased soil organic carbon (SOC) content, SOC stock, water stable aggregates (WSA), geometric mean diameter (GMD), soil total porosity (TP), macroporosity (MA), and the least limiting water range (LLWR). However they increased soil bulk density (BD) and tensile strength (TS) of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: No-tillage; Soil organic carbon; Soil aggregate; Bulk density; Tropical soil; Cerrado.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000400021
Registros recuperados: 5
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