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This set of clear and concise Ag Science revision notes summarises the learning outcomes relating to three of the sections in strand 2 “Soils”

All aspects of the learning outcomes have been summarised to aid student revision.

The factors affecting soil formation

Gley Soils
Podzols
Brown Podzolic Soils
Brown Earths
Luvisols
Rendzina
Peat
Lithosols

The Physical Characteristics of Soil

Soil Structure
Factors affecting soil structure
Cementation
Separation
Soil Texture
Soil Particles
Soil Water
The Soil Triangle
Soil Compaction

The Chemical Characteristics of Soil

Flocculation
Cation Exchange
Cation Exchange Capacity
pH
Liming

Biological Characteristics of Soil

The Microbiome
The Rhizosphere
The Carbon Cycle
The Nitrogen Cycle
Organic Matter
Earthworms

The Management of Soil

Soil Drainage
Soil Sampling
Soil Testing
Fertiliser
Slurry
Manure
Health and Safety

Also covered are TEN SPECIFIED PRACTICAL ASSESSMENTS

To isolate and grow bacteria from clover root nodules
To determine the percentage of organic matter in a soil sample and convert it to organic carbon
To show the activity of earthworms in a soil
To estimate the number of earthworms in a pasture
Investigating soil texture by hand testing, sedimentation and sieving
Calculating the percentage water content of a soil sample
Comparing the capillarity and infiltration rates of compacted and uncompacted soils
Investigating the chemical properties of soil by demonstrating flocculation
Investigating the chemical properties of soil by demonstrating cation exchange capacity
Investigating the chemical properties of soil by investigating the pH of a soil sample.

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The Ag Science Teacher
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