Modeling ammonia volatilization following urea application to winter cereal fields in the United Kingdom by a revised biogeochemical model.

Urea accounts for over half of the global ammonia volatilization from synthetic nitrogen fertilization. Process-oriented models, such as the widely applied DeNitrification DeComposition 9.5 version (DNDC95), are expected to predict ammonia volatilization from agricultural urea applications under various conditions.