Tabulated Data on Magnesium Contents in Soils

Soil Types

Considering surface soils, sandy soils typically have the lowest magnesium concentrations and clay soils typically have the highest magnesium concentrations (193,220). Common soil types high in magnesium include soils that are not leached heavily or soils in depressions where leached nutrients may accumulate. Leached soils such as lateritic soils and podzols tend to be low on magnesium (29). Soils derived from parent bedrock of dolomite or igneous rock tend to be high in magnesium (29,221).