Peanut, also known as groundnut (Arachis hypogaea) is a crop of global importance. It is widely grown in the tropics and sub-tropics, being important to both smallholder and large commercial producers. It is classified as both a grain legume, and, because of its high oil content, an oil crop. World annual production is about 46 million tonnes per year. China accounts for 37% of World production, Africa for 25%, India for 21% and the Americas 8%. In Africa, remarkably, its production exceeds that of all other grain legumes put together, and it is an extremely important source of protein, energy and iron (Production Statistics from 2013).