C6.1.1 - Fertilisers Flashcards
1
Q
What are the essential elements needed by plants?
A
Nitrogen, phosphorus and potassium
2
Q
What are the symptoms for nitrogen deficiency?
A
poor growth, yellow leaves
3
Q
What are the symptoms for phosphorus deficiency?
A
poor root growth, discoloured leaves
4
Q
What are the symptoms for potassium deficiency?
A
poor fruit growth, discoloured leaves
5
Q
What is a fertiliser?
A
Substance added to soil to replace nutrients or minerals used by growing plants
6
Q
What are fertilisers that provide nitrogen, phosphorus, and potassium in water-soluble compounds called?
A
NPK fertilisers
7
Q
What is the Haber process?
A
Industrial process to make ammonia
8
Q
What are the raw materials for the Haber process?
A
Air, natural gas, and steam
