It is generally followed on the hills with undulated topography to minimize land erosion and to conserve soil moisture. In this system, plants are planted along the contour across the slope. The contour line is so designed and graded in such a way that the flow of water in the irrigation channel becomes slow and thus finds time to penetrate into the soil without causing erosion. In terrace system planting is done on flat strip of land formed along the contours. Terraced fields rise in steps one above the other and help to bring more area into productive use and also to prevent soil erosion. The width of the contour terrace varies according to the nature of the slope. The planting distance under the contour system may not be uniform.
How trees are planted in contour system for orange cultivation?
