• oxide
  • elemental
Nitrogen Total (N) 0%
Phosphorus Pentoxide (P205) 0%
Potassium Oxide (K20) 14%
Water soluble (K20) 14.0%
Water soluble 6.0%
Water soluble 17.0%
Water soluble (SO3) 48.0%
Nitrogen Total (N) 0%
Phosphorus (P) 0%
Potassium (K) 11.6%
Water soluble 11.6%
Water soluble 3.6%
Water soluble 12.2%
Water soluble 19.2%



  • Advantages
  • Directions of use
  • The 4-in1 fertilizer containing K, S, Mg and Ca
  • Natural source for all crops
  • Fully soluble with all nutrients available for plant uptake
  • Ideal for chloride sesitive crops
  • Increases yield by up to 40%
  • Approved for organic agriculture
  • Low carbon footprint
Directions of use

Ideal natural source of nutrients for all crops

  • For S demanding crops: corn, brassicas (cabbage, broccoli, cauliflower), potatoes, cotton
  • For oil crops: sunflower, canola (rape seed), oil palm - where S is essential for oil formation
  • For Ca demanding crops: potato and root vegetables (carrot, parsnips) for best quality
  • For N-fixing leguminous crops - which need high S for nodule formation but no N applications
  • For pastures and forage crops - to prevent magnesium deficiency in ruminant animals
  • For chloride sensitive crops
  • For organic crops 

The new 4-in-1 fertilizer for better crop yield

Polysulphate is a natural mineral from underneath the North Sea that contains four minerals: Sulphur, Potassium, Magnesium and Calcium. It is a single complex crystal, totally natural and is ready to be used straight from our own mines on your field.

For more infomation please visit polysulphate.com

Suggested period of use

  • Jan
  • Feb
  • Mar
  • Apr
  • May
  • Jun
  • Jul
  • Aug
  • Sep
  • Oct
  • Nov
  • Dec