The NDICEA model: a supporting tool for nitrogen management in arable farming

Nitrogen use efficiency is an important item in organic farming. Modelling nitrogen dynamics can help to understand the impact of alternative agronomic practices and thus assist in decision making. In three examples in the Netherlands, the role of the NDICEA model is demonstrated. It is concluded that NDICEA is an easy to use and helpful tool for optimizing nitrogen efficiency and minimizing losses.