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8-20-34 (n=3), 8-20-84 (n=4), 8-20-86 (n=9), 8-20-87 (n=7), 8-20-88 (n=3), 8-20-89
(n=5),8-20-100 (n=7), 8-25-60 (n=19),8-25-75 (n=18), 8-25-90 (n=18) and 8-25-100
(n=3).
The majority of the subsets have only one unique organic carbon and pH value and hence
do not furnish any additional information. The only supplementary information derived is
the linear relationship between the denitrification rate and nitrate concentration from 8-4-
75, 8-6-100, 8-10-61, 8-20-84,8-20-88 and 8-20-89 (Figure 2.48 - Figure 2.53).
Rdn (kgN ha-1 d-1)
Texture 8 Temperature 4 WFP 75 : Denitrification Rate Vs.Nitrate Concentration
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.00
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 2.48 8-4-75; Denitrification Rate Vs. Nitrate Concentration.
68
3.5
4.0