Ammonia emission from sandy loam soil amended with manure compost and urea

Abstract Urea is a renowned nitrogen (N) fertilizer widely used in plant N nutrition owing to its high concentration (46%). The effect of the application rate on ammonia (NH 3 ) emission into environment and soil properties yet be unraveled. NH from sandy loam amended with manure compost (T1: 5000 kg ha −1 urea at different rates (100, 200, 400 designated as T2, T3, T4, respectively) replications was evaluated an incubation experiment. Ammonia rapid early stage experiment followed by equilibrium decrease that tends toward zero end incubation. emissions 16.50, 52.15, 75% applied T4 were observed day 49. increased linearly (y = 0.7823x−32.169, R 2 0.95**) response rates. T1 conserves more 4 + (20.79 mg soil, T2 (11.8 T3 (11.7 ). reduced pH optimal for microbial activities nutrient availability, while promoted acidity. A balanced combination mitigates volatilization improves fertility. In conclusion, applying (5000 100 or 200 recommended mitigation, nitrification inhibition, efficient retention soil.