Texturing mentor

Finally to get the random mud color, place a new crater texture in the scene file. Try playing with attributes given above and you will get different variations of a barren landscape. Use the above network as color 1 of a blend color node and set color 2 to blank. Then use a noise gradient ramp and animate it to create ground breaking up by an earthquake or some other natural disaster. Create similar scene and incorporate patches of grass instead of only barren landscape. Thus making of barrens landscape has become very easy. Even a novice in texturing or shading can do it easily and in a better and faster way. So keep trying friends, nothing is impossible and shading is not an exception. So, try try and keep on trying. Practice brings us lots of experience and knowledge. I experienced it by myself and telling these words from my heart. Hope you got my point. Thank you 

To create a new barren landscape, take a new lambert shader. The first thing to do is to break up the land into chunks by using a bump network. Start by applying a new crater texture in the bump. Also scale up the 3D placement node to get the desired scale of roughness. The crater map essentially creates an uneven rough surface which needs to be broken down into chunks. This is achieved by applying a leather texture into the crater color. In this leather texture, simply set color to white and crease color to black as this will intensify the chunks as well as the overall bump since a bump channel accepts only grey shades as interpolated values of zero to maximum height of the bump effect.