Groundnut(Arachis hypogaea L.)are grown throughout the tropical and awarm tempearture regions of the world, with commercial production principally between latitudes 40 degree N and 40degree S. Leading production nations are India(33.4% of global production, China(27.8%), USA(9.3%), Senegal (4.2%), Indonesia (4.2%), Nigeria (3.3%), Myanmar(3.0%), Sudan(2.7%) and Argentina (2.0%). Clearly, the crop is grown in several agro ecological systems and under numerous socioeconomic environments. Yield of groundnuts is often????????
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