Estabilidade de agregados de um latossolo vermelho degradado em recuperação com adubos verdes, calcário e gesso

Bonini, Carolina dos Santos Batista; Alves, Marlene Cristina

doi:10.1590/s0100-06832011000400019

Cited by 18 publications

(17 citation statements)

References 8 publications

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“…The predominance of larger, water-stable aggregates in the soil under native vegetation in comparison to the other treatments was attributed to the positive effect of organic C on the stability of larger aggregates (Demarchi et al, 2011;Costa Júnior et al, 2012). These results are in accord with Bonini and Alves (2011), who conducted evaluations of the physical quality of a previously exposed soil (B horizon remaining) in an experimental area similar to that of the present study. In their study, the B horizon had been exposed by deep stripping, and the soil subsequently was under 17 years of agricultural management with green manure, limestone, gypsum, and forage grasses (Brachiaria).…”

Section: Resultssupporting

confidence: 93%

“…The stripped soil exhibits part of the B horizon, and this has remained exposed since 1969. An inspection in 1992 found high levels of soil surface compaction (Bonini and Alves, 2011). However, in some areas, natural regeneration in the form of rarefied and low-growing vegetation has started and has been allowed to remain in this condition until the present study was conducted.…”

Section: Methodsmentioning

confidence: 85%

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Recovery of an Oxisol Degraded by the Construction of a Hydroelectric Power Plant

Carvalho

Espíndola

Alves

et al. 2015

Rev. Bras. Ciênc. Solo

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the removal of thick layers of soil under native scrubland (Cerrado) on the right bank of the Paraná River in selvíria (state of Mato grosso do sul, brazil) for construction of the ilha solteira hydroelectric Power Plant caused environmental damage, affecting the revegetation process of the stripped soil. over the years, various kinds of land use and management systems have been tried, and the aim of this study was to assess the effects of these attempts to restore the structural quality of the soil. The experiment was conducted considering five treatments and thirty replications. the following treatments were applied: stripped soil without anthropic intervention and total absence of plant cover; stripped soil treated with sewage sludge and planted to eucalyptus and grass a year ago; stripped soil developing natural secondary vegetation (capoeira) since 1969; pastureland since 1978, replacing the native vegetation; and soil under native vegetation (Cerrado). in the 0.00-0.20 m layer, the soil was chemically characterized for each experimental treatment. a 30-point sampling grid was used to assess soil porosity and bulk density, and to assess aggregate stability in terms of mean weight diameter (MwD) and geometric mean diameter (gMD). aggregate stability was also determined using simulated rainfall. the results show that using sewage sludge incorporated with a rotary hoe improved the chemical fertility of the soil and produced more uniform soil pore size distribution. leaving the land to develop secondary vegetation or turning it

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Section: Resultssupporting

confidence: 93%

Section: Methodsmentioning

confidence: 85%

Recovery of an Oxisol Degraded by the Construction of a Hydroelectric Power Plant

Carvalho

Espíndola

Alves

et al. 2015

Rev. Bras. Ciênc. Solo

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“…Reductions of values of mean weight diameter were observed in treatments EGR and POU, being statistically identical, due to the reduction of bigger sized aggregates' values. These results evidence that treatments EVE, PAS and MN were more efficient to deposit organic matter in the 10-20 cm soil layer (Table 4), which may be attributed to the release of organic compounds by roots and/or the soil fauna agreeing with results of AratanI et al (2009), and Bonini and Alves (2011) that studying the quality of soil under different systems of use and management, verified that native forest area presented better quality of the soil, when compared to the areas submitted to antropic action.…”

Section: Journal Of Agricultural Sciencesupporting

confidence: 90%

Soil Physical Attributes and Organic Carbon in a Cohesive Yellow Latosol (Oxisol) Under Different Soil Management Systems in the Coastal Plains of Bahia, Brazil

Silva¹,

Dias²,

Farias³

et al. 2018

JAS

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Although soil physical attributes are determining factors of soil quality and for root development of crops, they are often neglected when dealing with soil management, which refers only to fertility. The objective of this work was to evaluate soil physical characteristics, organic carbon content and carbon stock levels in yellow Latosol cohesive distrophic coastal plains of Bahia, Brazil, where different soil management systems were implemented. Soil texture, water dispersible clay, flocculation index, soil density and porosity, liquid limit, plastic limit, plasticity index, stability of aggregates, organic carbon content and resistance to penetration were evaluated from soil samples collected in the 40 cm-top soil. The different soil plot covers consisted of (i) Eucalyptus with grasses (EGR), (ii) Eucalyptus with spontaneous vegetation (EVE), (iii) fallow (POU), (iv) pasture (PAS), and (v) native forest (MN). It was found that EVE and MN contributed to greater stability of larger aggregates in the 20-40 cm-soil layer compared to EGR, PAS and POU. The high organic matter contents of soils of the cultivated plots (EVE and EGR) increased the limits of consistency. Soil management systems with Eucalyptus and pasture contributed to accelerate the oxidation process and the loss of C.

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“…The evolution of the soil aggregation state improves the soil structure, which can consequently increase soil porosity, aeration, infiltration and erosion resistance (Matos et al, 2008;Vezzani & Mielniczuk, 2009;Bonini & Alves, 2011;Santi et al, 2012). The increase in the proportion of macroaggregates and the high organic carbon contents can characterize an improved soil structure, because the soil properties reach levels at which soil functions are fully operational (Vezzani & Mielniczuk, 2009).…”

Section: Introductionmentioning

confidence: 99%

Changes in a Rhodic Hapludox under no-tillage and urban waste compost in the northwest of Rio Grande do Sul, Brazil

Moraes

Silva

Cherubin

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYThe use of urban waste compost as nutrient source in agriculture has been a subject of investigation in Brazil and elsewhere, although the effects on soil physical and chemical properties and processes are still poorly known. The aim of this study was to evaluate the effect of application of urban waste compost and mineral fertilizer on soil aggregate stability and organic carbon and total nitrogen content of a Rhodic Hapludox under no-tillage in the northwestern region of Rio Grande do Sul, Brazil, in the 2009/2010 and 2010/2011 growing seasons. The experiment was arranged in a 2 × 6 (seasons and fertilization) factorial in a randomized complete block design with four replications. The factor time consisted of two growing seasons (sunflower in 2009/10 and maize in 2010/11) and the factor fertilization of five rates of urban waste compost (0, 25, 50, 75 and 100 m 3 ha -1 ), and mineral fertilizer. Soil samples were collected from the 0.0-0.10 m layer to determine aggregate stability (mean weight and geometric diameter), soil organic carbon (SOC) and total nitrogen (TN). Rates of up to 75 m 3 ha -1 of urban waste compost, after two years of application to no-tillage maize and sunflower, improved aggregation compared to mineral fertilization in a Rhodic Hapludox. After the second crop, the SOC and TN contents increased linearly with the levels of urban waste compost.Index terms: soil organic carbon, aggregate stability, total nitrogen, soil structure, organic manure.( A utilização de composto de lixo urbano como fonte de nutrientes para a agricultura vem sendo investigada; entretanto, as alterações físicas do solo ainda são pouco conhecidas. Objetivouse avaliar a influência do uso de composto de lixo urbano e da adubação mineral na estabilidade de agregados e nos teores de carbono orgânico e nitrogênio total de um Latossolo Vermelho, em sistema plantio direto na região noroeste do Rio Grande do Sul. Utilizou-se o delineamento de blocos ao acaso, em esquema fatorial 6 × 2 (adubação e épocas), com quatro repetições. O fator épocas de avaliação constituiu-se dos anos agrícolas de 2009/10 (girassol) e 2010/11 (milho). O fator adubação foi composto por cinco doses de composto de lixo urbano (0, 25, 50, 75 e 100 m 3 ha -1 ), além de um tratamento adicional com fertilização mineral. Na camada de 0,0-0,10 m, foram determinados a estabilidade de agregados (diâmetro médio geométrico e ponderado), os teores de carbono orgânico (CO) e o nitrogênio total (NT). A utilização de doses crescentes de composto de lixo urbano favoreceu melhorias na agregação do solo, em relação à fertilização mineral. A utilização de até 75 m 3 ha -1 de composto de lixo urbano, após dois anos de aplicações em cultivos agrícolas com milho e girassol em um Latossolo Vermelho, sob sistema plantio direto, promoveu melhorias na agregação do solo, quando comparada à fertilização mineral. O teor de CO e o de NT, após o segundo cultivo, apresentaram incrementos lineares, em relação às doses de composto de lixo urbano.Termos de indexação: carbono orgâ...

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Estabilidade de agregados de um latossolo vermelho degradado em recuperação com adubos verdes, calcário e gesso

Cited by 18 publications

References 8 publications

Recovery of an Oxisol Degraded by the Construction of a Hydroelectric Power Plant

Recovery of an Oxisol Degraded by the Construction of a Hydroelectric Power Plant

Soil Physical Attributes and Organic Carbon in a Cohesive Yellow Latosol (Oxisol) Under Different Soil Management Systems in the Coastal Plains of Bahia, Brazil

Changes in a Rhodic Hapludox under no-tillage and urban waste compost in the northwest of Rio Grande do Sul, Brazil

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