On gentle slopes alternating cropping strips along the contour are built: the upper one is used as a catchment and the lower one is cropped. The width of the cropped strip ranges from 1 – 3 m. The C:A ratio is usually 1:1 but can reach 1:5 depending on rainfall and the crop. Often on the sides and the lower end of the cropped area soil bunds are constructed to impede runoff from the cropped area. Cultivated strips are used on flat land or on gentle slopes of up to 4% with at least 1 m deep soils and that receive rainfall of more than 200 mm/y. (Mekdaschi & Liniger 2013)