Spatial variability of aggregate stability in latosols under sugarcane

Souza, Zigomar Menezes de; Júnior, José Marques; Pereira, Gener Tadeu; Sáenz, Carolina María Sánchez

doi:10.1590/s0100-06832009000200002

Cited by 11 publications

(8 citation statements)

References 9 publications

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“…Luca et al (2008) determined physical properties and C and N contents in soils under sugarcane with and without burning at harvest and found increased C contents where clay contents were high, due to faster material degradation and humification in soils with high sand and low clay content. Souza et al (2009) The cultivation of millet (SMS) on RL a led to AMWD values in the 0.00-0.10 m layer similar to those obtained with a single soybean crop (S), which confirms the above-mentioned favourable effect of a grasslegume rotation.…”

Section: Resultssupporting

confidence: 69%

Soil uses during the sugarcane fallow period: influence on soil chemical and physical properties and on sugarcane productivity

Silva

Fernandes

2014

Rev. Bras. Ciênc. Solo

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SUMMARYThe planting of diversified crops during the sugarcane fallow period can improve the chemical and physical properties and increase the production potential of the soil for the next sugarcane cycle. The primary purpose of this study was to assess the influence of various soil uses during the sugarcane fallow period on soil chemical and physical properties and productivity after the first sugarcane harvest. The experiment was conducted in two areas located in Jaboticabal, São Paulo State, Brazil (21 o 14' 05'' S, 48 o 17' 09'' W) with two different soil types, namely: an eutroferric Red Latosol (RLe) with high-clay texture (clay content = 680 g kg -1 ) and an acric Red Latosol (RLa) with clayey texture (clay content = 440 g kg -1 ). A randomized block design with five replications and four treatments (crop sequences) was used. The crop sequences during the sugarcane fallow period were soybean/millet/soybean, soybean/sunn hemp/soybean, soybean/fallow/ soybean, and soybean. Soil use was found not to affect chemical properties and sugarcane productivity of RLe or RLa. The soybean/millet/soybean sequence improved aggregation in the acric Latosol.Index terms: crop diversification, soybean, millet, sunn hemp.RESUMO: USOS DO SOLO NO PERÍODO DA REFORMA DO CANAVIAL:ATRIBUTOS QUÍMICOS E FÍSICOS DO SOLO E PRODUTIVIDADE DA CANA-DE-AÇÚCAR A diversificação de culturas, no período de reforma do canavial, pode contribuir para a melhoria dos atributos químicos e físicos do solo, incrementando seu potencial produtivo para o próximo ciclo da cana-de-açúcar. O objetivo deste trabalho foi avaliar a influência de diferentes

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Section: Resultssupporting

confidence: 69%

Soil uses during the sugarcane fallow period: influence on soil chemical and physical properties and on sugarcane productivity

Silva

Fernandes

2014

Rev. Bras. Ciênc. Solo

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“…The mean values of MWD, GMD and ASI were, respectively, 6.13, 2.12 and 97.4 %. These values were considered high compared to MWD for Red Latosols (Souza et al, 2009), but they were very similar to those found by Reichert et al (2006) studying an Acrisol. As the MWD values found are very close to the modal diameter of the aggregates submitted to the test, the soil structure stability was considered high.…”

Section: Resultssupporting

confidence: 84%

Aggregation of subtropical soil under liming: a study using laser diffraction

Bortoluzzi

Poleto

Baginski

et al. 2010

Rev. Bras. Ciênc. Solo

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Laser diffraction (LD) provides detailed analysis of particle size distribution. Its application to testing the stability of soil aggregates can assist studies on the aggregation of soils with contrasting electrochemical properties. The objectives of the present work were: (a) to propose a protocol for using LD to study soil aggregation, (b) to study the aggregation of an Acrisol under the influence of different doses and forms of lime. Samples were collected in 2005 from a Brazilian Acrisol that in 1994 had received 0.0; 2.0; 8.5 and 17.0 Mg ha-1 of lime, left on the soil surface or incorporated. Aggregates from 4.76 to 8.00 mm diameters were studied using the traditional method proposed by Kemper & Chepil (1965), with wet sieving, while aggregates from 1.00 to 2.00 mm were studied using a CILAS® laser diffractometer that distinguishes particles ranging from 0.04 to 2,500.00 μm. LD readings were made after six consecutive pre-treatments, using agitation times, a chemical dispersion agent and ultrasound. Mean Weighted Diameter (MWD) and the Aggregate Stability Index (ASI) calculated, using the traditional method does not discriminate the treatments. However, LD is able to produce detailed data on soil aggregation, resulting in indexes of stability of aggregates that are linearly related to the doses of lime applied (MWD: R² = 0.986 and ASI: R² = 0.876). It may be concluded that electrochemical changes in the Brazilian Acrisol resulting from incorporated lime affect the stability of aggregates, increasing stability with increased doses of lime.

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“…The soil stability increase has been attributed to organic matter increment (SOUZA et al, 2009;ANDERS et al, 2010). In this case, as OM content was reduced with the increase of TWW doses, it is believed that such reduction has contributed negatively to the aggregation index.…”

Section: Resultsmentioning

confidence: 97%

Soil physical attributes in chemigated banana plantation with wastewater

et al. 2015

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ABSTRACT:The feasibility of using sewage wastewater as a water and nutrient source for plants is an alternative to harness agricultural natural resource, observing its influence on the organic matter dynamics and soil energy. Our objective here was to evaluate the effects of applying different doses of effluent from a sewage treatment plant, in Janaúba -MG, Brazil, over the physical attributes of a soil grown with "Prata Anã" banana. From soil sample collection at depths of 0-20, 20-40, and 40-60 cm, we determined the following soil properties: soil density, total porosity, macroporosity, microporosity, organic matter, clay dispersed in water and stability of soil aggregate. The experimental design was in randomized blocks with four repetitions. Wastewater raising doses promoted increase in suspended solids, contributing to macroporosity reduction at 20-40 and 40-60 cm depths; as well as a reduction in organic matter within 0-20 cm layer. Clay dispersal was observed in the depths of 0-20 cm, being derived from an increase in sodium content. Concurrently, there was a reduction of soil aggregate stability. KEYWORDS:Musa spp, agricultural reuse of effluents, environmental sanitation, semi-arid. ATRIBUTOS FÍSICOS DO SOLO EM BANANAL FERTIRRIGADO COM ÁGUARESIDUÁRIA SANITÁRIA TRATADA RESUMO: A utilização de água residuária proveniente do tratamento de esgoto, como fonte hídrica e nutricional para as plantas, é uma alternativa para racionalizar o aproveitamento do recurso natural na agricultura, observando-se sua influência sobre a dinâmica da matéria e da energia no solo. O objetivo deste trabalho foi avaliar os efeitos da aplicação de diferentes doses de efluente da estação de tratamento de esgoto de Janaúba -MG, sobre os atributos físicos de um solo cultivado com banana 'Prata-Anã'. A partir da coleta de amostras de solo, nas profundidades de 0-20; 20-40 e 40-60 cm, foram avaliados os seguintes atributos: densidade do solo, porosidade total, macroporosidade, microporosidade, matéria orgânica, argila dispersa em água e a estabilidade de agregados do solo. O delineamento experimental foi o em blocos casualizados, com quatro repetições. O aumento das doses de água residuária sanitária tratada no solo promove: a) Incremento nos sólidos suspensos aportados ao solo, o que contribui para a redução da macroporosidade nas profundidades de 20-40 e 40-60 cm do solo; b) Redução da matéria orgânica na profundidade de 0-20 cm do solo; c) Aumento do aporte de sódio, o que determina a dispersão de argilas na profundidade de 0-20 cm, e d) Redução da estabilidade de agregados do solo.

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Spatial variability of aggregate stability in latosols under sugarcane

Cited by 11 publications

References 9 publications

Soil uses during the sugarcane fallow period: influence on soil chemical and physical properties and on sugarcane productivity

Soil uses during the sugarcane fallow period: influence on soil chemical and physical properties and on sugarcane productivity

Aggregation of subtropical soil under liming: a study using laser diffraction

Soil physical attributes in chemigated banana plantation with wastewater

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