Nitrogen (N), the building block of plant proteins and enzymes, is an essential macronutrient for plant functions. A field experiment was conducted to investigate the impact of different N application rates (28, 57, 85, 114, 142, 171, and 200 kg ha-1) on the performance of spring wheat (cv. Ujala-2016) during the 2017-2018 and 2018- 2019 growing seasons. A control without N application was kept for comparison. Two years mean data showed optimum seed yield (5,461.3 kg ha-1) for N-application at 142 kg ha-1 whereas application of lower and higher rates of N did not result in significant and economically higher seed yield. A higher seed yield was obtained in the 2017-2018 (5,595 kg ha-1) than in the 2018-2019 (5,328 kg ha-1) growing seasons under an N application of 142 kg ha-1. It was attributed to the greater number of growing degree days in the first (1,942.35 degrees C days) than in the second year (1,813.75 degrees C). Higher rates of N (171 and 200 kg ha-1) than 142 kg ha-1 produced more num-ber of tillers (i.e., 948,300 and 666,650 ha-1, respectively). However, this increase did not contribute in achieving higher yields. Application of 142, 171, and 200 kg ha-1 resulted in 14.15%, 15.0% and 15.35% grain protein con-centrations in comparison to 13.15% with the application of 114 kg ha-1. It is concluded that the application of N at 142 kg ha-1 could be beneficial for attaining higher grain yields and protein concentrations of wheat cultivar Ujala-2016.