19 - Kaiapo - Dominant Soil @ Map Scale 1:50000
| Associated Soil/s |
14 may also be found within this area (19) if a more detailed survey was carried out. |
| Soil Properties of Dominant Soil/s |
|
| Parent material |
Hastings age alluvium from greywacke |
| Characteristics of site |
Back swamp or depression in lowest part of older flood plain |
| Soil features |
>100 cm greywacke alluvium (silt loams on sandy loams) |
Natural drainage
Depth to gley and hence to water table after wet periods |
Poor
<30 cm |
| Potential rooting depth, texture, and limiting layer |
>100 cm silt loam/sandy loam in dry season
30 cm to ground water gley in wet season |
| Available water capacity |
>130 mm |
| Infiltration rate |
Moderate
Slow if compacted |
| Permeability rate |
Moderate
Slow if buried topsoil |
| Susceptibility to pugging and compaction when wet |
High |
| Susceptibility to wind erosion when dry |
Low |
| Unfavourable soil characteristics |
Poor drainage
Topsoil easily compacted, causing slow infiltration |
Soil Management of Dominant Soil/s
| Artificial drainage - drain spacing |
20-40 m |
|
Cultivate when moist to avoid compaction
|
19 |
Irrigation:-
Recommended method
Application rate
Dripper spacing for continuous wetted strip
Amount and frequency |
Sprinkler to prevent water logging
Slow - <4 mm/hr
60 cm if 4 l/hr drippers used
30–50 mm infrequently |
Kaiapo (19) (photo K. Vincent)