ABSTRACT A research to examine legin application and its dose to the root nodulation and pea-nut (Arachis hypogaea L.) yield Kelinci variety was carried out at green house Potrobangsan Village, North of Magelang District and alti- tude of 350 meters above sea level, at latosol soil and 6,5 pH. The research was from January until April 1996. The method used is factorial experiment wit…