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Table 4.15 Texture 7, Linear multi-regression using all variables.
Coefficients Estimate Std.Error t-value Significance
Intercept -7.85 15.45 -0.51
Bulk Density (g cm -3 ) 1.64 9.20 0.18
NO3 - Conc ( µg N g -1 soil) 0.01 0.00 8.86 ***
OC (%) -0.31 0.89 -0.34
pH 0.90 0.26 3.44 ***
Soil Depth (cm) -0.14 0.06 -2.13 *
Temp (ºC) -0.05 0.04 -1.19
WFP (%) 0.06 0.01 8.53 ***
Signif.Codes Signif.Codes Signif.Codes
0 '***' 0.001 '**' 0.01
0.01 '*' 0.05 '.' 0.1
0.1 1
Table 4.16 Texture 7, Linear multi-regression using selected variables (S)
Coefficients Estimate Std.Error t-value Significance
(Intercept) -8.76 2.04 -4.31 ***
NO3 - Conc ( µg N g -1 soil) 0.01 0.00 9.66 ***
OC (%) -0.49 0.26 -1.91 .
pH 0.93 0.27 3.50 ***
Temp (ºC) 0.01 0.03 0.18
WFP (%) 0.06 0.01 8.62 ***
Signif.Codes Signif.Codes Signif.Codes
0 '***' 0.001 '**' 0.01
0.01 '*' 0.05 '.' 0.1
0.1 1
Using the information from the tables below (Table 4.15 and Table 4.16) the following
equations are developed for Sandy loam.
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