WRB-canonical: vertic horizon \<= 100 cm AND \>= 30% clay between the surface and the vertic horizon throughout AND shrink-swell cracks that start at the surface (or below a plough layer / below a self- mulching surface / below a surface crust) and extend to the vertic horizon.
Arguments
- pedon
A
PedonRecord.
Details
v0.3.4 enforces (1) vertic horizon, (2) all overlying layers \>= 30%
clay, and (3) shrink-swell cracks that start within the upper 20 cm.
"Cracks extending to the vertic horizon" is enforced indirectly by the
test_shrink_swell_cracks test that already requires an explicit
cracks_width_cm value.