Khoai

{{Unreferenced stub|auto=yes|date=December 2009}} '''Khoai''' in [[Bengali language|Bengali]] refers to a geological formation specifically in [[Birbhum]], [[Bardhaman]], and [[Bankura]] districts of [[West Bengal]], [[India]] and some parts of [[Jharkhand]], India that is made up of [[laterite]] [[soil]] rich in [[iron oxide]], often in the shapes of tiny hills. The Khoai can only support certain types of plants. It is a very poor soil for most types of agriculture practiced in the areas in which it is found. Yet often, a khoai maybe situated adjacent to a naturally forested area. {{coord missing|West Bengal}}