Function to calculate and evaluate the N retention in soils in view of water purification for surface quality

This function equals the N retention function of the OSI

Usage

bln_wat_nretention_sw(
  ID,
  B_LU_BRP,
  B_SOILTYPE_AGR,
  B_AER_CBS,
  B_GWL_CLASS,
  A_SOM_LOI,
  A_N_RT,
  A_CN_FR = NA_real_
)

Arguments

ID

(character) A field id

B_LU_BRP

(numeric) The crop code

B_SOILTYPE_AGR

(character) The agricultural type of soil

B_AER_CBS

(character) The agricultural economic region in the Netherlands (CBS, 2016)

B_GWL_CLASS

(character) The groundwater table class

A_SOM_LOI

(numeric) The organic matter content of the soil (%)

A_N_RT

(numeric) The organic nitrogen content of the soil in mg N / kg

A_CN_FR

(numeric) The carbon to nitrogen ratio (-)