In pedology, which master soil horizon represents the zone of maximum eluviation, where clay, iron, and aluminum oxides are leached away by percolating water?

💡 Solution & Explanation

In pedology, the E horizon is the master soil layer characterized by maximum eluviation, where minerals like clay, iron, and aluminum oxides are leached downward by percolating water. The underlying B horizon serves as the zone of illuviation where these leached materials accumulate. Soil profile horizons are standard concepts in physical geography and agriculture syllabi.