Critical Limits for Soybean and Black Bean Root Growth, Based on Macroporosity and Penetrability, for Soils with Distinct Texture and Management Systems

Luis Eduardo Akiyoshi Sanches Suzuki, Dalvan José Reinert, Marlene Cristina Alves and José Miguel Reichert
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Luis Eduardo Akiyoshi Sanches Suzuki: Center of Technology Development, Federal University of Pelotas, Pelotas 96010-610, Rio Grande do Sul State, Brazil
Dalvan José Reinert: Soils Department, Federal University of Santa Maria (Universidade Federal de Santa Maria—UFSM), Santa Maria 97105-9000, Rio Grande do Sul State, Brazil
Marlene Cristina Alves: Faculty of Engineering, São Paulo State University, Ilha Solteira 15385-000, São Paulo State, Brazil
José Miguel Reichert: Soils Department, Federal University of Santa Maria (Universidade Federal de Santa Maria—UFSM), Santa Maria 97105-9000, Rio Grande do Sul State, Brazil

Sustainability, 2022, vol. 14, issue 5, 1-19

Abstract: Soil compaction is a worldwide problem in agricultural areas, and it is important to define soil properties and reference values that allow knowledge of the compaction level for decision making. The objective of this study was to define the critical values of physical properties associated with the compaction of soils. Three Ultisols and two Oxisols, under different management systems, were collected at different depths for an evaluation of particle size, volumetric moisture, bulk density, and porosity. In the field, soil resistance to penetration and the root length of the soybean and edible black bean crop were measured. The soil profiles presented horizontal layers with similar resistance, but in some cases, there is discontinuity of these layers, which allows the roots to use the zones of lower resistance to deepen in the profile. The values of bulk density and resistance to penetration critical to soybean and edible black bean (only in sandy loam soil) root growth, according to soil textural class, are: sandy loam = 1.66 Mg m −3 and 1.5 to 2 MPa; loam and clay loam = 1.52 Mg m −3 and 1 to 1.5 MPa; silty clay loam and silty clay = 1.32 Mg m −3 and 1.5 to 2 MPa; and clay = 1.33 to 1.36 Mg m −3 and 2 to 3.5 MPa.

Keywords: critical bulk density; critical macroporosity; profile of soil resistance to penetration; soil compaction; soil management; no-tillage; chiseling (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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