2001
1999
1995
2001
1999
1995
-4
-10
+20
+46
-111
-102
Total
I-Total II (x)
16
24
13
113
237
163
Total
II
23
30
38
Leaching
16
30
38
Denitrification
7
14
6
32
43
34
Residues
(y)
-11
-24
+14
+14
-154
-136
x–y
=deficit/oversupply
50
7
NH3
evaporation
16
24
13
74
123
80
Crop
yield
N and P output from soil, kg ha-1
Deficit
Oversupply