Calculate the phosphorus excess index in France

This function calculates the phosphorus excess index

Usage

osi_nut_p_fr(B_LU, A_P_OL, A_PH_WA = NA_real_)

Arguments

B_LU

(character) The crop code

A_P_OL

(numeric) The P-content of the soil extracted with Olsen

A_PH_WA

(numeric) The pH measured in water.

Value

The phosphate excess index in France estimated from extractable soil P Olsen (a numeric value).

Details

This function does not account for variability per agricultural region. The pH is used to classify wether soils are calcareous.

Examples

osi_nut_p_fr(B_LU = 'SOJ', A_P_OL = 45, A_PH_WA = 4.5)
#> [1] 2.807014e-05