% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/diagnostics-horizons-wrb-v033.R
\name{pretic}
\alias{pretic}
\title{Pretic horizon (WRB 2022): "Amazonian Dark Earth" (terra preta de
indio) horizon -- thick anthropogenic surface with high P, SOC, and
incorporated charcoal / pottery.}
\usage{
pretic(pedon, min_thickness = 20, min_oc = 1.5, min_p_mehlich3 = 30)
}
\arguments{
\item{pedon}{A \code{\link{PedonRecord}}.}

\item{min_thickness}{Numeric threshold or option (see Details).}

\item{min_oc}{Numeric threshold or option (see Details).}

\item{min_p_mehlich3}{Numeric threshold or option (see Details).}
}
\value{
A \code{\link{DiagnosticResult}} recording whether the diagnostic is present, the qualifying layers, and the supporting evidence.
}
\description{
Pretic horizon (WRB 2022): "Amazonian Dark Earth" (terra preta de
indio) horizon -- thick anthropogenic surface with high P, SOC, and
incorporated charcoal / pottery.
}
