Anionic Subgroup helper (Oxisols)

Pass when delta pH (KCl - water) is 0 or net positive in a 18+ cm layer within 125 cm. Indicates exchange complex dominated by positive-charge minerals (Fe/Al oxides).

Usage

anionic_subgroup_usda(pedon)

Arguments

pedon

A PedonRecord.

Value

A DiagnosticResult.