**Source:** [SALCA](https://static-content.springer.com/esm/art%3A10.1007%2Fs11367-023-02255-w/MediaObjects/11367_2023_2255_MOESM7_ESM.docx) — SALCAheavymetal V1.0, Table 1, category `min_fert`. Created on 2026-03-13, regenerated on 2026-08-10.

**Dataset:** SALCA

**Licence:** [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)

**Citation:** Nemecek T., Roesch A., Bystricky M., Jeanneret P., Lansche J., Stüssi M., Gaillard G. (2024). Swiss Agricultural Life Cycle Assessment: a method to assess the emissions and environmental impacts of agricultural systems and products. Int J Life Cycle Assess 29(3), 433–455. https://doi.org/10.1007/s11367-023-02255-w

## Assumptions

- Inorganic fertilisers that are expressed in N, P2O5, or K2O, that are not in the SALCA documentation are mapped to the closest inorganic fertiliser in the SALCA documentation, e.g., `ammoniumMetaphosphateKgN` to `N mono-ammonium phosphate (MAP, kg N)`, or the unspecified SALCA entry, e.g., `N mineral fertilizers unspecified (kg N)`
- Fertilisers reported per kg of heavy metal (e.g., `kg Zn`, `kg Cu`) have a value of 100 % for the relevant heavy metal.
- Fertilisers specified in other units (e.g., `Kg Mn`, `kg Fe`) have been assumed to carry no heavy metal load.
- Values have been converted from the mg/kg units used in SALCA to the % units used in HESTIA.