Urea hydrolysis in the soil produces

Urea hydrolysis in the soil produces Ammonium carbonate.
The hydrolysis of urea occurs in two stages. In the first stage, ammonia and carbamic acid are produced. The carbamate spontaneously and rapidly hydrolyzes to ammonia and carbonic acid, and produces Ammonium carbonate.
Urea applied to the soil reacts with water and the soil enzyme urease and is rapidly converted to ammonium. In this reaction, hydrogen ions (H⁺) are consumed, causing the soil pH near the fertilizer to rise.