P-CaCl2 or P-PAE
P-CaCl2 is the result of determining the amount of phosphate available to the plant, using CaCl2 (a light salt). P-CaCl2 (or P-PAE) indicates how much phosphate is directly available to the crop. The laboratory result is given in mg P/kg. The unit of measurement is usually kg P/ha.
The complete soil analysis Fertilization Manager of Eurofins Agro gives insight in the phosphate situation of the soil.