The Soil: Quiz

Read the following statement and question then, based on what you have learnt from the previous screens, select the correct answer...

Soil compaction caused by heavy vehicles (such as tractors or bulldozers) can lead to substantial productivity losses in agriculture and forestry.

How does compaction affect the soil?

compaction alters the soil texture, reducing its capacity to store water

compaction destroys the soil structure, reducing aeration and drainage

compaction destroys the soil structure, reducing its capacity to store water

try again

No, compaction has little or no effect on soil texture. It destroys the soil structure by breaking down aggregates and probably even increases the soil's capacity to store water. However, aeration and drainage are reduced and it is this which reduces plant growth.

Yes, compaction destroys the soil structure by breaking down soil aggregates.

Well done, you answered correctly. Use the 'next' button to proceed.

No, although compaction destroys the soil structure by breaking down aggregates it does not reduce the soil's capacity to store water. The reduction in plant growth is caused by a reduction in soil aeration and drainage.