Soil Flashcards
How many types of soil are there?
3
What are the types of soil?
Clay . Loam. Sand
Features of clay?
Consists of tiny small particles
Which soil has tiny particles
Clay
Soil that has slightly bigger particles than clay
Loam
Features of sand
Soil is coarser and consists of large particles
True or False? Loam has bigger particles comaperd to clay but smaller than sand?
True.
There is no water between the particles?
False
What is vital for the survival for soil organisms?
Air
Poorly aerated soil?
Clay
Why does sand have low water holding capacity?
It’s particles are large.
Why is the drainage of clay poor?
Has tiny soil particles
Disadvantage of clay soil
Plants may rot easily
Most suitable soil type for plant growth and why
Loam. Has medium water holding capacity and is well aerated and contain sufficient nutrients.
What is leaching?
Process in which water washes away valuable nutrients in soil.
Which soil mostly experiences leaching
Sand
Humus? ( compost)
Decayed plant and animal matter
Why is humus beneficial
It increases both the soil fertility and the water holding capacity of soil
Which plants grow better in alkaline soil ( high ph)
Succulent plants
Most plants grow better in neutral soil ? True
True
Features of humus
Dark in colour
Binds mineral particles together in soil
Absorb water
Soil texture?
Depends on size of soil particles and how they are mixed
Texture of sand
Rough and coarse
Xerophytes
Low water holding capacity
Shallow roots
Succulent leaves
Thorns instead of leaves
Mesophytes
Good water holding capacity
Plants adapted to conditions that are medium
Hydrophtyes
Lot of water
