Reducing Ammonia Volatilization from Urea Fertilizer Applied in a Waterlogged Tropical Acid Soil via Mixture of Rice Straw and Rice Husk Biochars

Ammonia volatilization causes major nitrogen losses from the soil and applied urea which results in low urea-N usage efficiency. In line to this, laboratory incubation experiment was conducted assess effect of rice straw husk biochar on ammonia volatilization, pH, exchangeable ammonium, available nitrate comparison without additives under waterlogged conditions. Application mixture biochars at application rate 5-10 t ha-1 had significantly minimized by 30.86%-38.61% over T1. The also increased retention ammonium ions with increment pH control. Hence, findings suggest that amended altered nutrients level minimizing loss a way enhanced availability