Skip to contents

Planosol RSG gate (WRB 2022 Ch 4, p 107)

Source: R/diagnostics-rsg-tier2.R
planosol.Rd

WRB-canonical: abrupt textural difference \<= 75 cm AND, in 5 cm directly above or below the abrupt textural difference, stagnic properties (>= 50% redoximorphic features) AND reducing conditions.

Usage

planosol(pedon, strict = NULL)

Arguments

pedon

A PedonRecord.

strict

Logical or NULL. When NULL (default) it resolves via getOption("soilKey.rsg_strict", FALSE). TRUE disables the planic-features fallback.

Value

A DiagnosticResult recording whether the diagnostic is present, the qualifying layers, and the supporting evidence.

Details

v0.3.4 enforces all three components. The 5-cm-window restriction is relaxed to "the layer immediately above or below the abrupt textural difference satisfies stagnic + reducing".

Tier-3 strict mode (v0.9.98)

With strict = TRUE the planic_features fallback path is disabled. Strict mode requires the canonical evidence – an abrupt textural difference plus measured stagnic and reducing conditions in the bracketing layer – and will not accept the simpler clay-doubling proxy on its own.