30 - Waipukurau
Soil Properties
| Parent material |
Alluvium from volcanic ash with some greywacke |
| Characteristic site and soil features |
Flat or gently sloping high terrace with shallow alluvium from ash and greywacke over clay from weathered fine ash over loess with cemented pan |
| Associated soils not shown within map unit at map scale but separated out in more detailed maps. - Sample Location |
28, 32
A |
| Natural drainage and depth to perched gley |
Poor
<30cm |
| Potential rooting depth, texture, and limiting layer |
30cm ashy sandy loam on gleyed ashy sandy loam on clay over cemented pan at 40-50cm |
| Available water capacity |
30-50mm |
| Infiltration rate |
Rapid
|
| Permeability rate |
Very slow |
| Susceptibility of topsoil to pugging and compaction when wet |
Moderate
|
| Susceptibility to wind erosion when dry |
Very high |
| Unfavourable soil characteristics |
Topsoil susceptible to wind erosion rapid infiltration
low AWC
20-30cm to perched gley on very slowly permeable cemented pan at 40-50cm |
Soil Management
| Artificial drainage: drain spacing |
30 Mole drains above pan |
|
Cultivate when moist to avoid:
wind erosion
|
30 |
|
Irrigation:-
Recommended method
Dripper spacing for continuous wetted strip
Amount and frequency
|
30 sprinkler to prevent waterlogging
30 30cm if 4 l/hr drippers used
little (15-25mm), often to prevent waterlogging |
Waipukurau ash on sandy loam (30) (photo E. Griffiths)