This is the NUE calculation as being used in the BBWP framework
Usage
bln_nut_nue(
B_LU_BRP,
B_HELP_WENR,
B_GWL_CLASS,
A_P_AL,
A_P_CC,
A_P_WA,
A_N_RT,
B_N_RT = NA_real_,
B_N_RT_SD = NA_real_,
penalty = TRUE
)Arguments
- B_LU_BRP
(numeric) The crop code
- B_HELP_WENR
(character) The soil type abbreviation, derived from 1:50.000 soil map
- B_GWL_CLASS
(character) The groundwater table class
- A_P_AL
(numeric) The P-AL content of the soil
- A_P_CC
(numeric) The plant available P content, measured via 0.01M CaCl2 extraction (mg / kg)
- A_P_WA
(numeric) The P-content of the soil extracted with water (mg P2O5 / 100 ml soil)
- A_N_RT
(numeric) The organic nitrogen content of the soil (mg N / kg)
- B_N_RT
(numeric) The mean organic nitrogen content of the soil in the LSW region (mg N / kg). Optional.
- B_N_RT_SD
(numeric) The variance in organic nitrogen content of the soil in the LSW region (standard deviation) (mg N / kg). Optional.
- penalty
(boolean) the option to apply a penalty for high risk BBWP field indicators. Default is TRUE.