- Ammonium Sulphate
- Ammonium Nitrate
- Calcium Ammonium Nitrate
- Urea Ammonium Nitrate
NITROGEN fertilizers are mostly obtained from synthetic ammonia, used either as a gas or in water solution, or converted into salts such as Ammonium Sulphate, Ammonium Nitrate, and Ammonium Phosphate; but packinghouse wastes, treated garbage, sewage, manure, and cottonseed meal are also common sources
- Single Superphosphate (SSP)
- Triple Superphosphate (TSP)
- Monoammonium Phosphate (MAP)
- Diammonium Phosphate (DAP)
PHOSPHORUS fertilizers include Calcium Phosphate from phosphate rock.
The water-soluble Superphosphate and Triple Superphosphate are obtained by treatment of Calcium Phosphate with Sulphuric Acid and Phosphoric Acid respectively.
- Muriate of potash
- Sulphate of potash
POTASSIUM fertilizers, namely Potassium Chloride and Potassium Sulphate, are mined from potash deposits
- And others
Modern chemical fertilizers include one or more of the three elements most important in plant nutrition:
Nitrogen (N) – Phosphorus (P) – Potassium (K)
In fact, with most fertilizers, the analysis of the approximate nutrient content is usually expressed as a percentage called the N.P.K.