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2.7.8. Texture 8 (Silt Loam)
The silty loam database is subdivided into 8-3-53-6 (n=9),8-4-75-6 (n=9),8-6-65-6
(n=10),8-7-59-6 (n=10), 8-8-51-6 (n=10), 8-9-76-6 (n=10), 8-10-61-6 (n=9), 8-14-21-6
(n=4),8-14-70-6.2 (n=3),8-14-73-6.2 (n=4),8-15-69-6.2 (n=3),8-20-84-7.1 (n=4),8-20-86-
7.1 (n=9),8-20-87-7.1 (n=7),8-20-88-7.1(n=3),8-20-89-7.1 (n=5),8-25-60-7 (n=9), 8-25-
60-7.3 (n=9),8-25-75-7 (n=7),8-25-75-7.3 (n=9),8-25-75-7 (n=9),and8-25-90-7.3 (n=9).
The majority of the subsets have only one organic carbon value and those with more than
three unique organic carbon values do not demonstrate a significant linear correlation
between the denitrification rate and organic carbon. The only linear relationship obtained
is between the denitrification rate and nitrate concentration (Figure 2.100 - Figure 2.107)
Rdn (kgN ha-1 d-1)
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
Texture 8 Teperature 4 WFP 75 pH 6 : Denitrification Rate Vs. Nitrate Concentration
Rdn (kgN ha-1 d-1) = - 0.005474 + 0.01689 NO3- Conc( µgN g-1 soil)
S 0.0093829
R-Sq 80.5%
1.0
1.5
2.0 2.5 3.0
NO3- Conc( µgN g-1 soil)
Figure 2.100 8-4-75-6; Denitrification Rate Vs. Nitrate Concentration.
99
3.5
4.0