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Texture 7 Temperature 28 : Denitrification Rate Vs. Water Filled Porosity
Rdn (kgN ha-1 d-1)
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S 2.55833
R-Sq 73.2%
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Rdn (kgN ha-1 d-1) = 0.9599 + 0.08688 WFP (%)
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WFP (%)
Figure 2.29 7-28; Denitrification Rate Vs. Water filled Porosity
2.4.8. Texture 8 (Silt Loam)
The silty loam database was subdivided into the following subsets: 8-3 (n=9), 8-4
(n=9),8-6 (n=10),8-7 (n=11), 8-8 (n=10),8-9 (n=10),8-10 (n=27), 8-12 (n=6), 8-13 (n=13)
,8-14 (n=18), 8-15 (n=9),8-17 (n=8), 8-18 (n=4), 8-20 (n=48), 8-21 (n=4) and 8-25
(n=59). Of these subsets only the subsets 8-10,8-13,8-14,8-15,8-20 and 8-2 have three or
more unique organic carbon values, unfortunately there is no subset that provides a
significant linear correlation between the denitrification rate and organic carbon. The
only subsets with three or more unique WFP values are 8-13, 8-15, 8-17, 8-20 and 8-25.
The only subset with a significant correlation is 8-17, between Rdn and WFP (Figure
2.30).
There are six subsets with three or more unique pH values; they are 8-10, 8-12, 8-13, 8-
14, 8-15 and 8-25. None of these subsets have a significant linear correlation between the
pH and denitrification rate.
All of the subsets except for 8-7, 8-8 and 8-21 have three or more unique nitrate
concentration values. The subsets that yield a significant correlation are 8-4 and 8-15.
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