The results of a field experiment conducted during the special seasons (April-May) of 1987, 1988 and 1989 at Agricultural Research Station, Aliyamagar to find out the optimum production factors for rainfed groundnut revealed that the selection of improved variety JL 24, adoption of a spacing of 15 x 15 cm, providing one supplemental irrigation between 50 to 90 days and fertillizing the crop with 15N, 30P, 45K, kg.ha' resulted in the highest pod yield, net returns and cost benefit ratio.