|Special Public Works Programmes - SPWP - Anti-Erosion Ditches - Training Element and Technical Guide for SPWP Workers, Booklet No. 1 (ILO - UNDP, 84 p.)|
|3. Different types of anti-erosion ditches|
This kind of tiering is used on steep ground to allow plantations to be established.
The ditch, which is dug uphill from the retaining ridge, allows the water to be absorbed by the soil.