Returns TRUE se a saturacao por bases (V%) >= 50% no horizonte diagnostico subsuperficial (B ou C). 65% para A chernozemico.
Arguments
- pedon
A
PedonRecord.- min_v
Numeric threshold or option (see Details).
Value
A DiagnosticResult recording whether the diagnostic is present, the qualifying layers, and the supporting evidence.
Details
Since v0.9.257, in a profile with a B horizon the base saturation is
judged as the key and the definitions of the classes ask for it, "na maior
parte dos primeiros 100 cm do horizonte B (inclusive BA)": it is high when
the B layers with V of min_v or more make more than half of the
thickness of that section, among the layers where V is recorded. The BC is
not part of the section. Until v0.9.256 one layer of B or of C with a high
V was enough. A profile with no B is read as before, in its C layers, or in
all of its layers when it has no C either.