Subsuperficial nao hidromorfico, textura argilosa/muito argilosa (clay \>= 35% desde a superficie), com pequeno incremento de argila (B/A \<= 1.5), estrutura em blocos sub/angulares ou prismatica grau moderado/forte, cerosidade no minimo comum + moderada, espessura \>= 30 cm. Argila ativ baixa OR ativ alta + carater aluminico.
Usage
B_nitico(
pedon,
min_thickness = 30,
min_clay_pct = 35,
max_b_a_ratio = 1.5,
min_cerosidade = c("common", "many", "abundant", "strong")
)Arguments
- pedon
A
PedonRecord.- min_thickness
Numeric threshold or option (see Details).
- min_clay_pct
Numeric threshold or option (see Details).
- max_b_a_ratio
Numeric threshold or option (see Details).
- min_cerosidade
Terms of the amount of cerosidade that satisfy criterion (c). The lowest of them on the scale none < few < common < many sets the threshold (the default is "common", the "comum" of SiBCS), and an amount of that class or above passes, in English or Portuguese. A term the scale does not know passes only if it is literally listed.
Value
A DiagnosticResult recording whether the diagnostic is present, the qualifying layers, and the supporting evidence.
Details
The amount of cerosidade (clay_films_amount) and the type of
structure (structure_type) are read as the field sheet words them,
in English or in Portuguese, whatever the case and the accents: "Comum",
"Abundante" and "Prismatica que se desfaz" (written with its accent) of the
Brazilian surveys count as "common", "many" and "prismatic" do. Until v0.9.226 the amount was
compared with the literal English terms of min_cerosidade, so no
profile described in Portuguese could have a B nitico.
The criteria of the B nitico are minima ("cerosidade em quantidade no minimo comum e com grau forte ou moderado", "estrutura ... de grau de desenvolvimento moderado ou forte"), and a range meets a minimum only if all of it does: an amount or a grade written as a range is read by its lower end. "Pouca a comum" is below "comum" and, since v0.9.231, "Fraca a moderada" is below "moderada" for the cerosidade and for the structure.