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GCSE Geography · key term
Growing plants without soil, with their roots supplied by a nutrient-containing solution.
Used by AQA and OCR
Specification 3.2.3.2 · Paper 2
Growing plants without soil, with their roots supplied with a water solution containing mineral nutrients.
Revise: Strategies and Large-Scale Schemes to Increase Food SupplyIn hydroponics, roots receive a nutrient-enriched water solution. In aeroponics, roots hang in air and are sprayed with nutrient-rich mist. Both methods grow plants without soil; the difference is how water and nutrients reach the roots.
Specification 8.2b, 8.2c · Paper 2, Paper 3
Distinguish hydroponics, where roots receive a nutrient solution, from aeroponics, where exposed roots are sprayed with nutrient-rich mist.
Thanet Earth is a named example of hydroponics contributing to a national strategy; it does not supply the whole country's food.
Use qualified conclusions: GM benefits depend on the crop’s modified trait, while hydroponics’ environmental impact depends partly on its energy use.
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Growing plants without soil, using a nutrient solution to supply the minerals they need.
Two approaches illustrate this: the past intensification of farming and the present use of hydroponics.