Calculate the phosphate excess index in the Netherlands

This function calculates the phosphate excess.

Usage

osi_nut_p_nl(
  B_LU,
  A_P_AL = NA_real_,
  A_P_CC = NA_real_,
  A_P_WA = NA_real_,
  B_SOILTYPE_AGR = NA_real_,
  unitcheck = TRUE
)

Arguments

B_LU

(numeric) The crop code

A_P_AL

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

A_P_CC

(numeric) The P-content of the soil extracted with CaCl2

A_P_WA

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

B_SOILTYPE_AGR

(character) The soil type in a particular region

unitcheck

(character) Option to switch off unit checks (TRUE or FALSE)

Value

The phosphate excess index in the Netherlands estimated from extractable soil P fractions. A numeric value.

Examples

osi_nut_p_nl(B_LU = '265', A_P_AL = 45, A_P_CC = 2.5, B_SOILTYPE_AGR = 'dekzand')
#> [1] 0.907709
osi_nut_p_nl(B_LU = c('265','1019'),A_P_AL = c(35,54),
A_P_CC = c(2.5,4.5), A_P_WA = c(35,65), B_SOILTYPE_AGR = rep('dekzand',2))
#> [1] 0.9070752 0.1235547