%A J H Williams %A R C Nageswara Rao %I Sukhadia University %V 1 %L icrisat6681 %J Crop Physiology %P 1-35 %D 1983 %T Crop Physiological Factors Influencing Groundnut Productivity %X Groundnut (Atachis hypogaea L.) is one of the important legume crops of both the tropical and temperate regions of the world. About 77% of the worlds total groundnut area is in the semi-arid tropics producing 65% of the total production. Asia produces 10.9 million tonnes, Africa 5.2 million tonnes, North and Centrel America 2.0 million tonnes and South America 0.8 million tonnes.