A field experiment was conducted during rabi season 2014-15,2015-16 and 2016-17 at the RVSKVV- Zonal Agricultural Research Station Morena. To study the effect of different fertility levels on growth, yield attributes, yield and quality of Indian mustard (Brassica juncea L.). Treatment consisted of three levels of nitrogen (80, 100 and 120 kg ha-1), two levels of phosphorus (20 and 40 kg ha-1) and two levels of potassium (0 and 30 kg ha-1) were evaluated in three replication with randomized block design. Application of 120 kg N + 40 kg P2O5 + 30 kg K2 O ha-1 produced significantly higher seed yield (3342 kg ha-1) and other growth and yield attributes viz. secondary branches/plant (14.4), siliquae/plant (462.6), seeds/siliqua (15.33), length of siliqua (5.78 cm), Seed weight /plant (39.90g),1000-seed weight (6.85 g), oil yield (13.44 kg ha-1) as compared to application of 80 kg N + 20 kg P2 O5 + 0 kg K2Oha-1. Net return and B:C Ratio was also recorded higher with application of 120 kg N ha-1 and it was gained Rs. 14141 ha-1and Rs. 7523 ha-1higher net returns over application of 80 kg and 100 kg N ha-1Hence, the farmers could economically benefited by using Indian mustard cultivar RH-749 with recommended doses of fertilizers.