* (a)


 -0.0287x
y = 2.2227e-"'.287x
 r2 = 0.85
 p< 0.01


S


S*


0 10 20 30 40 50
 Soil Water Content (%)


60 70 80


Figure 7.12.


 -0 0692x
y = 1.5653e-0.0692x
 2
 r = 0.75
 p<0.01


5 10 15 20 25


Soil Organic Matter (%)


y = 1.937e00362
 r = 0.85
 p < 0.01


0 10 2 I I
0 10 20 30 40 50 60 70 80


 Soil Water Content (%)

Three Relationships Among Soil Parameters Are Graphed: (a) Soil
Water Content vs. Bulk Density, (b) Soil Organic Matter vs. Bulk
Density and (c) Soil Water Content vs. Organic Matter.


7-64


S* *


1.8 -
1.6 -
1.4-
1.2
1.0 -
0.8
0.6 -
0.4-
0.2
0.0


 30.0

 25.0 -

 S20.0

 S15.0

 0 10.0

0 5.0