Abstract: This study was conducted with the objective assessing the effect of ammonium nitrate fertilizer applied 0, 100, 200, 300, 400 and 500 kg N ha -1 on nitrogen uptake and accumulation of rocket plant in the field conditions. It was determined total nitrogen NO3-N, NO2-N contents of leaves. Highest yield was determined at the parcels that received 300 kg N ha -1. In this study, the highest leaf NO3-N (205.6-795.3 ppm) and NO2-N (0.019-0.154 ppm) contents was measured in the parcels that received the highest N (500kg ha -1) dose.