|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 system is used on slopes of between 15% and 20%. Fruit trees may be used for the plantation at the base of the ridge.