What are the three elements provided by NPK fertilisers for improved plant growth?

NPK fertilisers provide nitrogen, phosphorus and potassium. Each element promotes different aspects of plant growth.

Nitrogen in fertilisers promotes the formation of ______ and protein, leading to healthy leaves.

Nitrogen in fertilisers promotes the formation of chlorophyll and protein, leading to healthy leaves.

Phosphorus promotes healthy roots. Potassium promotes overall growth and the development of healthy fruit and flowers.

The ions NH 4 + and NO 3 - are both sources of soluble nitrogen in fertilisers.

True. Ammonium nitrate provides nitrogen from both the ammonium ion (NH 4 + ) and nitrate ion (NO 3 - ). It contains no phosphorus.

A fertiliser compound that supplies both nitrogen and phosphorus is ammonium phosphate, (NH 4 ) 3 PO 4 .

Potassium sulfate provides potassium to plants in the form of K + ions. Potassium promotes growth and the development of healthy fruit and flowers.

O LevelChemistryCambridge (CIE)Flashcards10. Chemistry of the Environment10.2 Fertilisers

Exam code: 5070

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What are the three elements provided by NPK fertilisers for improved plant growth?
NPK fertilisers provide nitrogen, phosphorus and potassium. Each element promotes different aspects of plant growth.
Nitrogen in fertilisers promotes the formation of ______ and protein, leading to healthy leaves.
Nitrogen in fertilisers promotes the formation of chlorophyll and protein, leading to healthy leaves.
What do phosphorus and potassium each promote in plants?
Phosphorus promotes healthy roots.
Potassium promotes overall growth and the development of healthy fruit and flowers.
The ions NH₄⁺ and ______ are both sources of soluble nitrogen in fertilisers.
The ions NH₄⁺ and NO₃^- are both sources of soluble nitrogen in fertilisers.
True or False?
Ammonium nitrate, NH₄NO₃, is a fertiliser that provides only nitrogen and no phosphorus.
True.
Ammonium nitrate provides nitrogen from both the ammonium ion (NH₄⁺) and nitrate ion (NO₃^-). It contains no phosphorus.
A fertiliser compound that supplies both nitrogen and phosphorus is ______ phosphate, (NH₄)₃PO₄.
A fertiliser compound that supplies both nitrogen and phosphorus is ammonium phosphate, (NH₄)₃PO₄.
What does the fertiliser potassium sulfate, K₂SO₄, provide to plants?
Potassium sulfate provides potassium to plants in the form of K⁺ ions. Potassium promotes growth and the development of healthy fruit and flowers.

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