Calculate the K availability — calc_potassium

This function calculates the K availability of a soil.

calc_potassium_availability(
  B_LU_BRP,
  B_SOILTYPE_AGR,
  A_SOM_LOI,
  A_CLAY_MI,
  A_PH_CC,
  A_CEC_CO,
  A_K_CO_PO,
  A_K_CC
)

Arguments

B_LU_BRP: (numeric) The crop code from the BRP
B_SOILTYPE_AGR: (character) The agricultural type of soil
A_SOM_LOI: (numeric) The organic matter content of the soil (%)
A_CLAY_MI: (numeric) The clay content of the soil (%)
A_PH_CC: (numeric) The acidity of the soil, measured in 0.01M CaCl2 (-)
A_CEC_CO: (numeric) The cation exchange capacity of the soil (mmol+ / kg), analyzed via Cobalt-hexamine extraction
A_K_CO_PO: (numeric) The occupation of the CEC with potassium (%)
A_K_CC: (numeric) The plant available potassium, extracted with 0.01M CaCl2 (mg / kg),

Value

The capacity of the soil to supply and buffer potassium. A numeric value.

Examples

calc_potassium_availability(B_LU_BRP = 265, B_SOILTYPE_AGR = 'dekzand',
A_SOM_LOI = 4, A_CLAY_MI = 11,A_PH_CC = 5.4, A_CEC_CO = 125, 
A_K_CO_PO = 8.5, A_K_CC = 145)
#> [1] 3.831044
calc_potassium_availability(265, 'dekzand',4, 11,5.4,  125,8.5, 145)
#> [1] 3.831044
calc_potassium_availability(c(265,1019), rep('dekzand',2),c(4,6), c(11,14),
c(5.4,5.6),  c(125,145),c(8.5,3.5), c(145,180))
#> [1]  3.831044 26.634636