Contour_trenching
Contour trenching
Conservation technique in agriculture
Contour trenching (a.k.a., Continuous Contour Trench or CCT)[1] is an agricultural technique that can be easily applied in arid sub-Sahara areas to allow for water, and soil conservation, and to increase agricultural production.[2][3][4][5]
Between two trenches crops can benefit during the growing season (when there is less rain) from the subsoil water reserve gathered during the rainy season.