Abstract: A field experiment was conducted to study the effect of balanced fertilization and legume mixture on fodder oat productivity during rabi season at instructional farm, Rajasthan College of Agriculture, Udaipur (Rajasthan). Legume mixture oat + berseem (2:1 row ratio) and oat + lucerne (2:1 row ratio) significantly improved number of tillers/m2, green fodder, dry fodder yield and protein yield over sole oat. Similarly, application of 120 kg N+ 60 kg P2O5 + 30 kg K2O/ ha significantly improved the highest number of taillers/m2, green fodder, dry fodder yields and protein yield over nitrogen application to the magnitude of 11.93 and 11.36; 31.91, 30.83 and 31.39, 8.88, 11.57 and 10.19 and 10.94 and 13.05 percent at first and second cutting, respectively.