Fertelizers

• Urea
• 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

• 16-16-16
• 20-20-20
• 10-26-26
• 9-20-30
• 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.