Compressibilidade de um Latossolo Amarelo distrocoeso não saturado sob diferentes sistemas de manejo da cana-de-açúcar

Vasconcelos, Romero Falcão Bezerra de; Cantalice, José Ramon Barros; Moura, Geber Barbosa de Albuquerque; Rolim, Mário M.; Montenegro, Carlos Eduardo de Vasconcelos

doi:10.1590/s0100-06832012000200022

Cited by 10 publications

(7 citation statements)

References 19 publications

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“…Precompression stress is generally considered as (a) an indicator of the soil mechanical strength (Ajayi et al, 2013); (b) the maximum pressure that should be applied to the soil to prevent compaction (Severiano et al, 2010;Araujo-Junior et al, 2011), and (c) the required pressure by the root system to enable the root elongation (Iori et al, 2013). The use of precompression stress as an indicator of soil structure sustainability is based on the fact that it divides the soil compression curve into regions of elastic (recoverable) deformations and plastic (non-recoverable) deformations (Oliveira et al, 2011;Vasconcelos et al, 2012;Iori et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Soil compaction during harvest operations in five tropical soils with different textures under eucalyptus forests

et al. 2018

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Traffic of farm machinery during harvest and logging operations has been identified as the main source of soil structure degradation in forestry activity. Soil susceptibility to compaction and the amount of compaction caused by each forest harvest operation differs according to a number of factors (such as soil strength, soil texture, kind of equipment, traffic intensity, among many others), what requires the adequate assessment of soil compaction under different traffic conditions. The objectives of this study were to determine the susceptibility to compaction of five soil classes with different textures under eucalyptus forests based on their load bearing capacity models; and to determine, from these models and the precompression stresses obtained after harvest operations, the effect of traffic intensity with different equipment in the occurrence of soil compaction. Undisturbed soil samples were collected before and after harvest operations, being then subjected to uniaxial compression tests to determine their precompression stress. The coarse-textured soils were less resistant and endured greater soil compaction. In the clayey LVd2, traffic intensity below four Forwarder passes limited compaction to a third of the samples, whereas in the sandy loam PVd all samples from the 0-3 cm layer were compacted regardless of traffic intensity. The Feller Buncher and the Clambunk presented a high potential to cause soil compaction even with only one or two passes. The use of soil load bearing capacity models and precompression stress determined after harvest and logging operations allowed insight into the soil compaction process in forestry soils.

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Section: Introductionmentioning

confidence: 99%

Soil compaction during harvest operations in five tropical soils with different textures under eucalyptus forests

et al. 2018

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“…A desestruturação física do solo afeta sua qualidade química e biológica, com reflexos na produtividade da cultura e nos aspectos ambientais da produção (Dexter, 2004;Pacheco & Cantalice, 2011;Vasconcelos et al, 2012). A compactação caracterizase pela redução da porosidade total, em resposta ao pequeno aumento da microporosidade, redução acentuada dos poros de maior diâmetro e mudanças na continuidade e distribuição de poros (Souza et al, 2005).…”

Section: Introductionunclassified

Espacialização do intervalo hídrico ótimo de um Latossolo Vermelho em dois sistemas de colheita de cana-de-açúcar

Araújo

Souza

et al. 2013

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o intervalo hídrico ótimo de um Latossolo Vermelho sob cultura de cana-de-açúcar com colheita mecanizada ou manual, e determinar a relação de dependência espacial deste atributo com a produtividade da cultura. O trabalho foi desenvolvido em duas áreas cultivadas com cana-de-açúcar, uma colhida mecanicamente sem queima desde 1996, e outra colhida com corte manual e queima desde 1973. O intervalo hídrico ótimo foi avaliado pela mensuração da resistência do solo à penetração e pela determinação da água no solo a 0,002, 0,006, 0,01, 0,03, 0,05, 0,1, 0,5 e 1,5 MPa. O intervalo hídrico ótimo variou com as alterações ocorridas no solo, nos dois sistemas de manejo estudados, o que indica maior degradação estrutural do solo e menor conteúdo de água disponível na área com colheita manual. A maior produtividade da cultura se concentra nas regiões de maior intervalo hídrico ótimo.Termos para indexação: compactação do solo, resistência do solo à penetração, variabilidade espacial. Spatialization of least limiting water range in an Oxisol under two sugarcane harvesting systemsAbstract -The objective of this work was to evaluate the least limiting water range of an Oxisol under a sugarcane cultivation with mechanical and manual harvesting, and to establish the spatial variability relationship between this attribute and crop productivity. The work was conducted in two areas cultivated with sugarcane, one of which was mechanically harvested without burning since 1996, and the other was manually harvested after burning since 1973. The least limiting water range was evaluated by determining the soil resistance to penetration at 0.002, 0.006, 0.01, 0.03, 0.05, 0.1, 0.5 and 1.5 MPa soil-water potentials. The least limiting water range varied with soil management changes in both studied systems, which indicates a greater soil degradation and lower water content in the area under manual harvesting. The greater crop yield concentrates in regions of higher least limiting water range.

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“…In the native forest area, we observed intermediate soil load-bearing capacity values between areas of burned and mechanized harvest and above the water content at the shrinkage limit (Figure 2). Reference [42] reported lower soil preconsolidation pressure in the native forest than in several sugarcane managements, suggesting that the load-bearing capacity of the soil in native forest stems from the stability of its natural structure due to the absence of anthropic action.…”

Section: Comparison Of Models Between Layers Within the Managementmentioning

confidence: 99%

Load-Bearing Capacity of an Oxisol under Burned and Mechanized Harvest Sugarcane Crops

Silva Araújo,

Menezes de Souza,

Soares Souza

et al. 2023

Sustainability

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The change in land use and the expansion of mechanized sugarcane production systems have led to an increase in soil compaction levels. Preconsolidation pressure may be used as a useful measure for soil mechanical state, management, and planning of mechanization systems. This study aimed to assess the soil compressive behavior, soil physical properties, and spatial variability of preconsolidation pressure of an Oxisol in sugarcane fields under burned harvest and mechanized harvest and the effects of land use change. The physical soil attributes (granulometry, soil water content, bulk density, total porosity, and macro and microporosity) and preconsolidation pressure were evaluated at 0.00–0.10-m, 0.10–0.20-m, and 0.20–0.30-m layers. The soil load-bearing capacity models were constructed from σp values for soil water contents. We mapped the assessed soil attributes from crossing points in a sampling mesh with regular 10 m intervals in each area and evaluated them via geostatistics. Land-use change towards sugarcane production systems promoted soil compaction. The mechanized harvesting system increased the soil load-bearing capacity in the water range corresponding to the friability region in subsurface layers. The preconsolidation pressure and soil water content exhibited spatial dependence in the sugarcane areas, regardless of the management system employed in the harvesting operations.

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Compressibilidade de um Latossolo Amarelo distrocoeso não saturado sob diferentes sistemas de manejo da cana-de-açúcar

Abstract: Compressibilidade de um latossolo amarelo distroCoeso Não saturado...

Cited by 10 publications

References 19 publications

Soil compaction during harvest operations in five tropical soils with different textures under eucalyptus forests

Soil compaction during harvest operations in five tropical soils with different textures under eucalyptus forests

Espacialização do intervalo hídrico ótimo de um Latossolo Vermelho em dois sistemas de colheita de cana-de-açúcar

Load-Bearing Capacity of an Oxisol under Burned and Mechanized Harvest Sugarcane Crops

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