NPK Fertilisers - K-containing Compound
Chemistry: AQA GCSE Higher, topic 10.4.9
Potassium-Containing Compounds in Fertilisers
There are 2 main soluble sources of potassium that can be used as fertilisers in their raw form. Both of these soluble sources are extracted using mining.

Potassium chloride

Potassium sulfate
Test yourself on NPK Fertilisers - K-containing Compound
What are the 2 main soluble sources of potassium?
How are potassium chloride and potassium sulfate sourced?
Are potassium chloride and potassium sulfate soluble or insoluble?
Select the correct statement about potassium-containing fertilisers