Environmental Engineering Reference
In-Depth Information
90
10
80
20
70
30
60
40
Clay
50
50
Silty
clay
Silty clay
loam
40
60
Sandy clay
Clay loam
30
70
Sandy clay
loam
Loam
20
80
Silt loam
10
90
Sandy Loam
Loamy
Silt
Sand
Sand
90
80
70
60
50
40
30
20
10
Percentage of sand
Fig. 3.3. Widely accepted textural triangle showing the names commonly assigned
to soil textural classes according to their relative percentages of sand, silt and clay.
but not always. If the pores are too small, they will exert strong capillary
forces and hold moisture very tightly - sometimes so tightly that roots are
unable to draw it away. In this case, turf may suffer water stress even
when porosity is high and the percentage of water in the soil is high. On
Granular
Blocky
Platy
Prismatic
Fig. 3.4. Our basic shapes of soil aggregates. (Drawing by R. Castro.)
