Build the canonical Plinthosol fixture

Synthetic seasonally-saturated tropical Plinthosol: A horizon with typical Cerrado SOC; Btv with diagnostic plinthite (25% by volume over 60 cm); persistent plinthite at depth. By construction:

• plinthic: PASSES on Btv and Cv.

• argic, ferralic, mollic, spodic, calcic, gypsic, salic: FAIL.

Usage

make_plinthosol_canonical()

Value

A PedonRecord.