Flocculation in Soil (Leaving Cert Agricultural Science): Flashcards
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What is flocculation?
What is flocculation?
Process where small particles stick together to form larger clumps (flocs)
What are flocs?
What are flocs?
Larger clumps formed when small particles stick together
Chemical used to cause flocculation in soil
Chemical used to cause flocculation in soil
Lime (calcium carbonate)
Effect of adding lime to clay in water
Effect of adding lime to clay in water
Clay particles clump & settle, water becomes clearer
What charge do clay particles carry?
What charge do clay particles carry?
Negative electrical charge
How do calcium ions from lime cause flocculation?
How do calcium ions from lime cause flocculation?
Neutralise negative charges on clay particles
Observation in Tube A (with lime)
Observation in Tube A (with lime)
Particles clump, settle rapidly, water becomes clear
Observation in Tube B (no lime)
Observation in Tube B (no lime)
Particles stay suspended, water remains cloudy
Purpose of control group in experiment
Purpose of control group in experiment
Compare treated vs untreated sample to see lime's effect
Agricultural benefit of liming heavy clay soils
Agricultural benefit of liming heavy clay soils
Creates better soil structure with improved drainage