and applied into the soil. These inhibitors generally slowdown the urea hydrolysis and help in enhancing the absorption of urea in soil by irrigation and rain . Urease inhibitors took the intention to gradually slow the hydrolysis of urea for a period of 7 to 14 days by suppressing the activity of urease. During this process, the surface applied urea could be moved into the soil profile effectively by lowering the attention of NH4 + on the soil surface . Urease inhibitors (NBPT) have the potency to reduce ammonia volatilization and nitrite (NO2) accumulation in soil and influenced the kinetic and thermodynamic behavior of urease in soil . The efficiency of inhibitors mainly depends upon the temperature and pH of soil, and low concentration of inhibitor. Most of the inhibitors including NBPT are highly effective in neutral soil with a small range of organic matter . In addition to chemical inhibitors, some natural products such as phenolic compounds (methyl gallate, stilbenoids, and flavonoids) have the ability to suppress the urease efficiency .