Figure 8

The graph was made on simulation datausing nitrogen model for the year 2005 (a) the nitrogen changes graph with different days of the year versus urea, total (NO3−–N and NH4+–N), (b) the graph of day versus total NO3−–N, Rain essential soil water (esw) and denitrification (dnit) while, (c) the graph of nitrate distribution through the soil depth at different dates in the year.