Numerical Analysis Of The Fate Of Nitrogen In
The Profile Root Zone Of An Agricultural Field
Author(s)
A. El-Sadek, S. Ducheyne & J. Feyen
Abstract
The fate of nitrogen in the soil is of major concern because of the potential
hazard that nitrogen, applied in excess of the natural decomposing capacity of
the soil, contaminates shallow and deep aquifers. For the prediction of the
nitrogen behaviour in soils simulation models are frequently used. In this study
the transport and fate of nitrate within the soil profile was analysed by
comparing historic field data with the simulation results of two mathematical
models, i.e. the WAVE and DRAINMOD model.
Comparison between experimental measured and simulated state variables
indicate that the nitrate concentrations in the soil is controlled by the fertiliser
practice, the initial conditions and the rainfall depth and distribution.
Furthermore, the study reveals that the
Keywords
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