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Soil Salinity
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Why do farmers need to clear the land in the first place?
To plant crops or pasture for grazing
What is the main crop associated with salinity in WA?
wheat
What area of Australia is MOSt effected by soil salinity
WA
Give one cause of urban salinity.
overwatering green areas, leaking pipes and tanks, urban development ie more concrete which pools water in some areas
How can irrigation salinity be avoided?
Only use the amount of water that crops require and no more.
If the salinity causes the vegetation to die what happens to the soil
it erodes away and becomes unproductive
Why are native deep rooted trees a good way to prevent salinity?
They keep the water table low in the ground and the salt stays deep in the soil.
Severe salinity of the soil can be reversed. T or F
F
What is the type of salinity found in city areas?
urban salinity
What is the type of salinity that results from over irrigation?
irrigation
What is the type of salinity that results from trees being cleared?
dryland
Which is the type of salinity that we looked at in detail?
dryland
How many types of soil salinity are there?
4


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