Nitric Subgroup helper (Anhyturbels / Anhyorthels)
Source:R/diagnostics-gelisols-usda.R
nitric_subgroup_usda.RdPass when a horizon >= 15 cm thick has nitrate concentration >= 118 mmol(-)/L AND (thickness * concentration) >= 3500. (Nitrate is not in the schema; v0.8 returns NA with missing flag.)
Arguments
- pedon
A
PedonRecord.