Abstract: Groundnut (Arachis hypogaea L.) is a leguminous crop and belongs to the Family fabaceae (Wikipedia, 2010). It is the 13 most important food crop and 4 most important oilseed crop of the world (Kees Stigter,2011).Groundnut is grown in 23.95million hectares with a total production of 36.45million metric tons and average yield of 1520kg/ha in 2009(FAO,2011).Major producing countries are: China,40%; India,16.4%; Nigeria, 8.2%; USA,5.9% and Indonesia,4.1%.Biotic and abiotic factors are major production constraints in Nigeria and elsewhere.