Figure 7

The graph of the year 2000 (a) the graph between Rain versus urea, Total NO3−–N and NH4+–N and days of the year (b) day versus Total NO3−–N, Rain, Essential soil water (esw) and Total NH4+–N while (c) The losses (NO3−–N and NH4+–N) with different depth indicated that the losses of NO3−–N losses depend on the rainfall occasions at other dates of the year 2000.