42 - Mangatahi - Dominant Soil @ Map Scale 1:50000
| Associated Soil/s |
43, 37 may also be found within this area (42) if a more detailed survey was carried out. |
| Soil Properties of Dominant Soil/s |
|
| Parent material |
Tongariro volcanic ash over loess |
| Characteristics of site |
Rolling land on eroded high terrace |
| Soil features |
Thin ash on loess with cemented pan |
Natural drainage
Depth to perched gley |
Imperfect
Water perched at 30-60 cm on cemented pan |
| Potential rooting depth, texture, and limiting layer |
15-30 cm ash on gleyed silt loam on cemented pan at 30-45 cm |
| Available water capacity |
25-50mm |
| Infiltration rate |
Rapid |
| Permeability rate |
Very slow |
| Susceptibility to pugging and compaction when wet |
Moderate |
| Susceptibility to wind erosion when dry |
Very high |
| Unfavourable soil characteristics |
Imperfect drainage water perched on pan
Low AWC
Rapid infiltration
Very slow permeability
Easily eroded by wind |
Soil Management of Dominant Soil/s
| Artificial drainage |
N/A |
|
Cultivate when moist to avoid wind erosion
|
42 |
| Irrigation - recommended method |
N/A |
Mangatahi (42) (photo E. Griffiths)