npk fertilisers

• give components of npk fertilisers

  nitrogen, phosphorous and potassium
• give source of nitrogen

  ammonium salts and nitric acid from ammonia
• give source of sources of phosphorous and potassium

  mining phosphate rock, potassium chloride and sulfate
• give salts produced from phosphate rock

  nitric acid - calcium nitrate

  sulfuric acid - calcium sulfate and calcium phosphate

  phosphoric acid - calcium phosphate