Groundnut (Arachis hypogaea L.) is one of the most important oleaginous plants cultivated in globally and particularly in tropical and subtropical areas (Shiyam, 2010). This crop is commonly cultivated in arid and semi-arid regions of India where it plays an important socioeconomical role. In this field experiment focused, the trails performance of salt tolerant mutant strain Bradyrhizobium (GNBJ-9M) at graded levels of nitrogen significantly to improve the growth and yield of groundnut. Among the treatments, T8 -GNBJ-9M+100% N recorded the maximum of plant height, leaf area index, dry matter production, number of nodules plant-1 , number of pods plant-1 , test weight of 100 seed (g), pod yield ha-1 , kernel yield t ha-1 , haulm yield t ha-1 at harvesting period and also oil content (%), protein content (%) respectively followed by T7 -GNBJ-9M+ 75% N compared to other treatments. The minimum was recorded in the all growth parameters in control treatment of T1 in groundnut plant.
