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73, 73G - Mangatewai - Dominant Soil @ Map Scale 1:50000
| Associated Soil/s |
32, 74, 29 may also be found within these areas (73, 73g) if a more detailed survey was carried out. |
| Soil Properties of Dominant Soil/s |
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| Parent material |
Tikokino age alluvium from the erosion of Castlecliffian deposits (layers of sandstone, siltstone, mudstone and greywacke stones) over loess and ash alluvium |
| Characteristics of site |
Watercourses and depressions on intermediate terrace |
| Soil features |
Sandy loam on ashy sandy loam over pan on stones |
Natural drainage
Depth to perched gley |
Moderate
Water perched at 60-90 cm on pan |
| Potential rooting depth, texture, and limiting layer |
73 - 30-45 cm sandy loam on ashy sandy loam on gleyed sandy loam (loess) on cemented pan at 60-100 cm |
| Available water capacity |
73 - 75-100 m
73g – 50-75 mm |
| Infiltration rate |
Moderate
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| Permeability rate |
Very slow |
| Susceptibility to pugging and compaction when wet |
Moderate |
| Susceptibility to wind erosion when dry |
High |
| Unfavourable soil characteristics |
Very slow permeability
Topsoil easily eroded by wind |
Soil Management of Dominant Soil/s
| Artificial drainage |
None needed |
|
Cultivate when moist to avoid wind erosion
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73 |
Irrigation:-
Recommended method
Dripper spacing for continuous wetted strip
Amount and frequency |
Any
40cm
30-50 mm infrequently |
Mangatewai (73, 73g) (photo K. Vincent)
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