Degree of Compactness and Mechanical Properties of a Subtropical Alfisol with Eucalyptus, Native Forest, and Grazed Pasture

Suzuki, Luis Eduardo Akiyoshi Sanches; Reichert, José Miguel; Reinert, Dalvan José; Lima, Cláudia Liane Rodrigues de

doi:10.5849/forsci.14-172

Cited by 22 publications

(16 citation statements)

References 26 publications

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“…Soils under NTS frequently have higher state-of-compactness in farmland conditions (Reichert et al, 2009;Suzuki et al, 2013) and in forests and grazed pasture (Suzuki et al, 2015). Soil deformation, as the sum of soil shearing and compaction, may increase the demand of agricultural machinery traction (Horn et al, 1995;Botta et al, 2011), soil resistance to root penetration (da Veiga et al, 2007;Fasinmirin and Reichert, 2011), and water deficit during dry spells (Grzesiak et al, 2012;Awe et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Conceptual framework for capacity and intensity physical soil properties affected by short and long-term (14 years) continuous no-tillage and controlled traffic

Reichert

Rosa

Vogelmann

et al. 2016

Soil and Tillage Research

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Recent studies have shown harmful effects of soil compaction in no-tillage system (NTS), but there are indications that soil structure improves with time of NTS adoption. We formulated the hypothesis that topsoils of NTS initially have worse soil physical conditions than those under conventional systems, but these conditions gradually improve with time also down to deeper depth, even when the soil is wheeled by farm machinery. Our objective was to evaluate the effect of a long-term no-tillage system and machine traffic on soil mechanical and hydraulic properties. The treatments and soil conditions consisted of five periods since the last conventional tillage (or age of NTS) in a Hapludox: 0.2, 1.5, 3.5, 5 and 14 years, with and without traffic; named recent tillage, and initial, intermediate, transition and stabilized NTS phases. Soil samples were collected from soil layers 0-7, 7-14 and 14-21 cm depth to determine soil porosity, precompression stress, compressibility coefficient, saturated hydraulic conductivity, air permeability, water retention curve, bulk density and organic carbon. Conventional tillage of soil previously under notillage significantly affected soil capacity properties, resulting in high macroporosity and deformation susceptibility, low bulk density and precompression stress. Intensity properties were affected initially by an increased soil pore obstruction, negatively affecting air permeability and saturated hydraulic conductivity, from 0 to 21 cm soil depth. However, after five years of no-tillage there was an increase in microporosity and, although small, in soil organic carbon, especially in the 0-7 cm soil layer; thus, soil water retention and soil intensity properties (like soil water and air permeability) were also improved, regardless of farm machinery traffic. Over time, soil reconsolidation occurred, which resulted in reduction of the compressibility coefficient and degree of compactness, mainly in the upper layers (0-7 and 7-14 cm). However, in the deepest layer with the least disturbance, the degree-of-compactness and bulk density increased. The evolution of physical properties and processes (from recent tillage to stabilized NTS phase) for no-tilled soil is proposed for controlled and uncontrolled traffic systems as a framework based on field data for capacity and intensity soil properties. The process of creating aggregates is represented, at first, by an increased number of contact points before they are re-loosened and strengthened at the same time by a rearrangement of particles, reducing aggregate bulk density but increasing soil strength at the same time. The framework is divided into 4 phases: initial (1.5 years), intermediary (3.5 years), transitional (5 years), and stabilized (14 years) conditions. 2015 Elsevier B.V. All rights reserved.

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Section: Introductionmentioning

confidence: 99%

Conceptual framework for capacity and intensity physical soil properties affected by short and long-term (14 years) continuous no-tillage and controlled traffic

Reichert

Rosa

Vogelmann

et al. 2016

Soil and Tillage Research

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150

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“…Land use and management affect the degree of compaction to varying intensities (Suzuki et al, 2015). When the soil is subjected to external pressure, soil compressibility and shearing depends mainly on soil granulometry and moisture (Reichert et al, 2010(Reichert et al, , 2018b.…”

Section: Soil Physical Properties In Different Types Of Tillagementioning

confidence: 99%

Best tillage practices for eucalyptus growth and productivity: A review on the Brazilian experience

Santos¹,

Reichert²

2022

Revista Brasileira De Ciência Do Solo

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“…In programs designed for assessing the degradation or improvement of soil structure, the degree of soil compaction is an important concept for evaluating different tillage methods (Reichert et al, 2009a(Reichert et al, , 2021aSuzuki et al, 2013Suzuki et al, , 2015. Low DC may impede water retention and reduce soil-seed and soil-root contacts, while a high DC is an indication of low soil pore space, thus reducing soil aeration and increasing soil penetration resistance, resulting in restricted root growth and crop performance (Modolo et al, 2008).…”

Section: Soil Composition or Capacity Propertiesmentioning

confidence: 99%

Is cassava yield affected by inverting tillage, chiseling or additional compaction of no-till sandy-loam soil?

Reichert¹,

Fontanela²,

Awe³

et al. 2021

Revista Brasileira De Ciência Do Solo

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Degree of Compactness and Mechanical Properties of a Subtropical Alfisol with Eucalyptus, Native Forest, and Grazed Pasture

Cited by 22 publications

References 26 publications

Conceptual framework for capacity and intensity physical soil properties affected by short and long-term (14 years) continuous no-tillage and controlled traffic

Conceptual framework for capacity and intensity physical soil properties affected by short and long-term (14 years) continuous no-tillage and controlled traffic

Best tillage practices for eucalyptus growth and productivity: A review on the Brazilian experience

Is cassava yield affected by inverting tillage, chiseling or additional compaction of no-till sandy-loam soil?

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