The Hybrid napier grass, NB 21 was significantly taller in height and produced more number of tillers as compared to Co 1 hybrid. Hence, NB 21 gave 17 per cent higher green fodder yield as compared to Co 1 (110.5 t green fodder/cut/ha). The sources of N did not influence on the growth parameters as well as fodder yields with an exception in two cuts. However, number of splits of N fertilizers can be reduced with the use of modified urea materials as compared to the application of prilled urea after each cut. Theplant height and tiller number were slightly improved with increase in nitrogen dose. Therefore, the improvement in green fodder yield due to N applicaion was significant upto a dose of 112.5 kg N/ha (8.6% increase in yield) as compared to 75 kg N/ ha an average of yield of 112.6 q/cut/ha. Hence, a dose of 112.5 kg N/ha (75% of the recommended N) appears to be optimum to hybrid napier grass under protective irrigations