This function evaluates the pH index in France
Usage
osi_c_ph_fr(B_LU, B_TEXTURE_GEPPA, A_PH_WA)
Arguments
- B_LU
(character) The crop type
- B_TEXTURE_GEPPA
(character) The soil texture class in a particular region.
- A_PH_WA
(numeric) The pH measured in H2O
Value
The pH index in France estimated from pH in water, the textural class and the crop type