2016
DOI: 10.1590/1807-1929/agriambi.v20n4p329-336
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S-index and soybean root growth in different soil textural classes

Abstract: A B S T R A C TThis study tested the hypothesis that the limiting values of S-index, proposed in the literature can not be used to determine the degradation condition of soils under soybean cultivation in the state of Pará, Brazil. The objective was to determine limiting values of S-index using soil physical attributes and validate it with soybean root growth, in soils with different textural classes. For the experimental design, the following treatments were established: five compaction levels for sandy loam … Show more

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Cited by 2 publications
(1 citation statement)
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“…The texture index is calculated to evaluate the content or percentage of sand, silt, and clay in soil composition, and appreciate the level of the mineral alteration of rock (Madeira Netto [33]); [26,42] The soil colour: CI CI = (R − V)∕ (R + V) [17] This index is used to extract information concerning the organic matter content and mineralogical composition of the soil (Soufiane Maimouni and Bannari [35])…”
Section: Statistical Patternsmentioning
confidence: 99%
“…The texture index is calculated to evaluate the content or percentage of sand, silt, and clay in soil composition, and appreciate the level of the mineral alteration of rock (Madeira Netto [33]); [26,42] The soil colour: CI CI = (R − V)∕ (R + V) [17] This index is used to extract information concerning the organic matter content and mineralogical composition of the soil (Soufiane Maimouni and Bannari [35])…”
Section: Statistical Patternsmentioning
confidence: 99%