Agriculture Reference
In-Depth Information
Aridisol
An 0 - 2.5 cm; light yellowish brown (10YR 6/4) fine sandy loam, moderate
thin platy structure.
BAn 2.5 - 12.5 cm; pale brown (10YR 6/3) fine sandy loam, strong medium
and coarse angular blocky structure.
Btknz1 12.5 - 20 cm; light yellowish brown (10YR 6/4) sandy clay loam,
moderate medium prismatic structure.
Btknz2 20 - 27.5 cm; light yellowish brown (10YR 6/4) sandy clay loam,
moderate medium prismatic structure.
Btknz3 27.5 - 45 cm; strong brown (7.5YR 5/6) clay loam, strong medium
prismatic structure.
Btknz4 45 - 81 cm; strong brown (7.5YR 5/6) clay loam, strong medium
prismatic structure.
Btknz5 81 - 99 cm; brown (7.5YR 5/4) clay loam, moderate medium and
coarse angular blocky structure.
2BCnzl 99 - 117 cm; light yellowish brown (10YR 6/4) sandy clay loam,
moderate medium subangular blocky structure.
2BCknz2 117 - 152 cm; light brown (7.5YR 6/4) sandy clay loam, weak
medium subangular blocky structure.
Figure 1.5.
An example of an Aridisol; this is the Casa Grande soil series, which is the state soil
of Arizona (from Ref. 2).
Infiltration and percolation rates also determine which salts have been
leached out of the soil. For instance, high infiltration and percolation
rates leach calcium and magnesium out of soil and they become acidic.
Where calcium and magnesium are not leached out of soil, the soils are neutral
