% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/diagnostics-gelisols-usda.R
\name{sphagnic_usda}
\alias{sphagnic_usda}
\title{Sphagnic Subgroup helper (Histels Fibristels)}
\usage{
sphagnic_usda(pedon, max_top_cm = 50, min_sphagnum_pct = 75)
}
\arguments{
\item{pedon}{A \code{\link{PedonRecord}}.}

\item{max_top_cm}{Default 50.}

\item{min_sphagnum_pct}{Default 75.}
}
\value{
A \code{\link{DiagnosticResult}}.
}
\description{
Pass when 75 percent or more of the fibric soil materials are
derived from Sphagnum to a depth of 50 cm or to a contact,
whichever is shallower (KST 13ed, p 190).
}
\details{
Implementation uses \code{fiber_content_rubbed_pct >= 75} as
a proxy. A more specific Sphagnum-fraction column is deferred.
}
\references{
Soil Survey Staff (2022), KST 13ed, Ch. 9, p 190.
}
