Soils

Question 1

Soil erosion

Answer 1

Wind erosion
Water erosion:
-rain splash erosion
-surface runoff
-slumping and landslides

Question 2

Methods of reducing soil erosiom

Answer 2

Long term crops
Zero tillage cultivation:
Minimises soil disturbance and reduces soil erosion, direct drilling of seed > ploughing
Contour ploughing:
Ploughing at 90 degrees to the slope means less water flow carrying the soil is lost
Tied ridging:
Cross cross shape to retain water
Multi cropping
Windbreaks