This function calculates the phosphate availability.
Usage
osi_c_phosphor_fr(
B_LU,
A_P_OL,
B_SOILTYPE_AGR = NA_character_,
B_AER_FR = NA_character_,
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 (mg P/ kg)
- B_SOILTYPE_AGR
(character) The soil type in a particular region. Optional.
- B_AER_FR
(character) An agroeconomic region in France. Optional.
- A_PH_WA
(numeric) The pH measured in water.
Value
The phosphate availability index in France estimated from extractable soil P Olsen (a numeric value).
Details
The function has two optional arguments soil type (B_SOILTYPE_AGR) and agricultural region (B_AER_FR). When these are unknown, then the soil type is estimated based on the pH value. Threshold values are then generalized for calcareous and non-calcareous soils.
Examples
osi_c_phosphor_fr(B_LU = 'SOJ', A_P_OL = 45,
B_SOILTYPE_AGR = 'limons battants', B_AER_FR = 'nord-picardie')
#> [1] 0.9984474