Episode 9 — Chemical Industries

Inorganic Fertilisers

Learners will be able to:

• Identify the essential elements required for plant growth and their functions in plants. • Describe the role of fertilisers in making these elements available to plants. • Explain why it is not possible to add nitrogen, phosphorus, and potassium directly to soil. • Calculate the percentage of each element in a fertiliser given its NPK ratio. • Determine the mass of each element in a fertiliser bag using its percentage composition.