Question

what is the constituents of the subsoil horizon?​

Answer 1

Answer:

In well drained soils, the B horizon is typically a yellowish brown to strong brown color and is commonly referred to as the subsoil. B - horizons have material (usually iron but also humus, clay, carbonates, etc.) which has moved into it (Illuviation) they also have structure development in some pedons.

Answer 2

Answer:

B horizon is commonly referred to as "subsoil" and consists of mineral layers which are significantly altered by pedogenesis, mostly with the formation of iron oxides and clay minerals