Test of Urea fertilizer and POC of rabbit urine fertilizer on the growth and yield of mustard plant (Brassica juncea L.). This research is aimed to get the formulation of Urea fertilizer and POC of rabbit urine proper on growth and yield of mustard plant. The research was conducted on the experimental field of the faculty of Agriculture Universitas muhammadiyah yogyakarta in juni - july 2017. The research was conducted by using a complete randomize design method using single factor with 6 treatment, 3 replication and 3 samples. There were 54 unit of green mustard plant in polybag with tested dose were 100 % N Urea, 80 % N Urea + 20 % N POC of rabbit urine, 60 % N Urea + 40 % N POC of rabbit urine, 40 % N Urea + 60 % N POC of rabbit urine, 20 % N Urea + 80 % N POC of rabbit urine, 100 % N POC of rabbit urine. The results showed that all treatment of N urea fertilizer and fertilizer n poc urine rabbit gave positive result