UPSC 2014 CDS I GK Paper

Terracing and contour bunding and Contour ploughing are suitablefor soil conservation in hilly region. Shifting cultivation (jhum) is not asoil conservation method hence, second method is incorrect. Tilling the field at right angles to the slop is called counter ploughing. In terracing, a number of terraces are cut along the hill slope. These are made on the steep slopes so that flat surfaces are available to grow crops. They can reduce surface runoff and soil erosion. Contour bunding involves the construction of banks along the contours. Terracing and contour bundingdivide the hill slope into numerous small slopes, check the flow of water, promote absorption of water by soil and save soil from erosion.