Division II.8 Chemical analyses
United Kingdom
Only the total element concentration is determined.
Each country is allowed to use its national methods. But it is necessary to certify the total element concentrations obtained by national methods with those certified on the reference standard samples. The foliage inventory will distinguish between mandatory and optional parameters (see list below)
| Mandatory parameters | Optional parameters |
|---|---|
| Nitrogen (N) | Zinc (Zn) |
| Sulphur (S) | Manganese (Mn) |
| Phosphorus (P) | Iron (Fe) |
| Calcium (Ca) | Copper (Cu) |
| Magnesium (Mg) | Lead (Pb) |
| Potassium (K) | Boron (B) |