39 - Takapau
Soil Properties
| Parent material |
Water deposit (alluvium) from older ashes and greywacke over red metal stones |
| Characteristic site and soil features |
old flood plain or terrace with ashy sandy loam over stones |
| Associated soils not shown within map unit at map scale but separated out in more detailed maps. - Sample Location |
10, 32
C |
| Natural drainage and depth to Water Table after wet periods |
Good
>10 metres |
| Potential rooting depth, texture, and limiting layer |
>30cm ashy sandy loam stones |
| Available water capacity |
30-50mm |
| Infiltration rate |
Rapid
|
| Permeability rate |
Very rapid |
| Susceptibility of topsoil to pugging and compaction when wet |
Very low
|
| Susceptibility to wind erosion when dry |
Extremely high |
| Unfavourable soil characteristics |
Susceptible to wind erosion when cultivated dry water repellent when dry - heavy rain or irrigation runs off ridges into hollows rapid infiltration when wet very rapid permeability low fertility - high phosphate retention |
Soil Management
| Artificial drainage: drain spacing |
39 none required |
Cultivate when moist to avoid: compaction
wind erosion |
39 |
|
Irrigation:-
recommended method
Dripper spacing for continuous wetted Strip
Amount and frequency
|
39 sprinkler to prevent water loss
39 30cm if 4 l/hr drippers used
little (15-25mm), often to prevent water loss |
Takapau ashy sandy loam (39) (photo E. Griffiths)