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Terms in this set (10)
Why is soil considered a natural resource?
because everything that lives on land including humans depends directly or indirectly on soil
how does wind erosion affect the value of soil?
When wind erosion occurs it blows away the top soil and when you blow away the topsoil and the topsoil contains a lot of fertility which then decreases the value
Why is soil so valuable?
Because everything that lives on land depends directly or indirectly on soil. There is also a limited supply of it.
What is conservation plowing?
dead weeds and stalks of the previous year's crop are plowed into the ground to help return soil nutrients, retain moisture, and hold soil in place
What is contour plowing?
farmers plowing their fields along the curves of a slope instead if in straight rows
how do plants help prevent soil erosion?
They can help by breaking the force of the falling rain and also the roots hold the soil together and keep it form blowing away.
how do legumes such as beans and peanuts help restore soil fertility?
they have small lumps on their roots that contain nitrogen fixing bacteria. *
What do we mean by crop rotation?
Crop rotation is when farmers plants different crops in a field each year.
When soil loses fertility why does it decrease in value?
When soil loses fertility it loses nutrients and moisture which makes it not as good of soil for plants to grow.
Why is fertile soil valuable?
Because it is rich in nutrients and is the best soil for crops to grow in
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