NPK Fertilisers

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4 Terms

1
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What do plants need?

Plants need nitrogen, phosphorus and potassium so we make fertilisers made from their salts

2
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What does ammonia make?

Ammonia is used to make ammonium salts

3
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How is potassium chloride and potassium sulphate obtained?

Potassium chloride and potassium sulphate are obtained by mining

4
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What is also mined?

Phosphate rock is also mined, but is treated with an acid before being added to the fertiliser