This function calculates the potassium excess.
Usage
osi_nut_k_uk(B_LU, A_SOM_LOI, A_K_AN)
Arguments
- B_LU
(numeric) The crop code
- A_SOM_LOI
(numeric) The percentage organic matter in the soil
- A_K_AN
(numeric) The K-content of the soil extracted with ammonium nitrate (mg K /kg)
Value
The potassium excess index in United Kingdom derived from extractable soil K fractions. A numeric value.
Examples
osi_nut_k_uk(B_LU = 265,A_SOM_LOI=3,A_K_AN = 50)
#> [1] 0.9537291
osi_nut_k_uk(B_LU = c(265,1019),A_SOM_LOI = c(3,5),A_K_AN = c(35,55))
#> [1] 0.9613131 0.9529314