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Rdn (kgN ha-1 d-1)
Texture 8 Temperature 25 WFP 90 Nitrate Concentration 320 : Denitrification Rate Vs. Organic Carbon
20
15
10
5
0
S 1.82814
R-Sq 97.9%
2.90
Rdn (kgN ha-1 d-1) = - 506.8 + 174.5 OC (%)
2.92
2.94 2.96
OC (%)
Figure 2.84 8-25-90-320; Denitrification Rate Vs. Organic Carbon.
2.6.9. Texture 9 (Silty Clay)
Texture nine was subdivided into three classes 9-15-25-9 (n=4), 9-25-100-9 (n=4) and 9-
30-100-9 (n=4). There is no significant linear relationship between the denitrification rate
and organic carbon or pH for the 9-15-25-9 and the 9-25-100-9 subset. For the 9-30-100-
9 subset there is no significant relationship between the denitrification rate and pH, the
relationship between Rdn – OC is shown in Figure 2.85.
2.6.10. Texture 10 (Silty Clay Loam)
Texture ten is subdivided into 10-18-100-302 (n=3), 10-25-60-89 (n=3), 10-25-60-288
(n=3), 10-25-60-366 (n=3), 10-25-75-89 (n=3), 10-25-75-228 (n=3), 10-25-75-336 (n=3),
10-25-90-89 (n=3), 10-25-90-228 (n=3), and 10-25-90-366 (n=3).All of the subsets have
only one nitrate concentration value; hence no additional information is acquired. Except
for the first three subsets all of the subsets show a significant linear relationship between
the denitrification rate and organic carbon. (Figure 2.86 -Figure 2.92).
89
2.98
3.00