This function calculates the NLV (nitrogen producing capacity) for the soil
calc_nlv(B_LU_BRP, B_SOILTYPE_AGR, A_N_RT, A_CN_FR, D_OC, D_BDS, D_GA)(numeric) The crop code from the BRP
(character) The agricultural type of soil
(numeric) The organic nitrogen content of the soil in mg N / kg
(numeric) The carbon to nitrogen ratio
(numeric) The organic carbon content of the soil in kg C / ha
(numeric) The bulk density of the soil in kg / m3
(numeric) The age of the grass if present
The capacity of the soil to supply nitrogen (kg N / ha / yr). A numeric value.
calc_nlv(B_LU_BRP = 256, B_SOILTYPE_AGR = 'dekzand',A_N_RT = 2500,
A_CN_FR = 11, D_OC = 86000,D_BDS = 1300, D_GA = 4)
#> [1] 103.7962
calc_nlv(1019,'dekzand',2315,13,86000,1345,0)
#> [1] 78.58252