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Comparison of estimation methods of soil strength in five soils Rev. Bras. Ciênc. Solo
Ajayi,Ayodele Ebenezer; Dias Junior,Moacir de Souza; Curi,Nilton; Araujo Junior,Cezar Francisco; Aladenola,Olanike Olaiya; Teixeira Souza,Thiago Tadeu; Inda Junior,Alberto Vasconcellos.
In agriculture, the soil strength is used to describe the susceptibility to deformation by pressure caused by agricultural machine. The purpose of this study was to compare different methods for estimating the inherent soil strength and to identify their suitability for the evaluation of load support capacity, compaction susceptibility and root growth. The physical, chemical, mineralogical and intrinsic strength properties of seven soil samples, collected from five sampling pits at different locations in Brazil, were measured. Four clay (CS) and three sandy clay loam (SCL) soils were used. The clay soils were collected on a farm in Santo Ângelo, RS (28 º 16 ' 16 '' S; 54 º 13 ' 11 '' W 290 m); A and B horizons at the Universidade Federal de Lavras, Lavras,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Penetration resistance; Preconsolidation pressure; Load support capacity.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832009000300002
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Structural quality of soils cultivated with coffee and pasture in an environmental protection area Rev. Bras. Ciênc. Solo
Lima,Vico Mendes Pereira; Magalhães,Ciro Augusto de Souza; Oliveira,Geraldo César de; Lima,José Maria de.
Studies of soils in Environmental Protection Areas (EPAs) are of great importance, because they are an essential component of ecosystems, directly interfering in environmental sustainability. The objective of this study was to evaluate the structural quality of soil cultivated with coffee and used as pasture in the Capituva's River microbasin, which is located in the Environmental Protection Area in Coqueiral, south of the state of Minas Gerais. Uniaxial compression test (preconsolidation test) and soil resistance to penetration were used. Undisturbed samples were taken from the surface layer (0-5 cm) of the soils in the area: a typic dystrophic Red Latosol (LVd - Oxisol), a typic eutrophic Red Argisol (PVe - Ultisol), and a typic dystrophic Haplic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Compression; Environmental sustainability; Soil water availability; Load support capacity; Soil penetration resistance.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000300012
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