Soil Properties that Affect Ammonia Volatilization Loss from Urea Ammonium Nitrate

Abstract

No-till (NT) or minimum tillage management is widely adopted in Tennessee to reduce soil erosion and runoff, and to improve soil health. However, ammonia volatilization is generally greater in NT systems because N fertilizers are surface-applied or broadcast. This publication addresses soil properties that can influence ammonia loss including soil pH, clay content, soil organic matter, and soil moisture levels.