Karamu

13 - Karamu

Soil Properties

Parent material	Water deposit (alluvium) from greywacke and/or sandstone
Characteristic site and soil features	Upper part of flood plain between levee (soils 5) and lower flood plain (soils 14,15); >100cm to Taupo pumice alluvium with  >30cm silt loams/clay loams on sand. Differs from 16 in having heavier (more clayey) topsoil
Associated soils not shown within map unit at map scale but separated out in more detailed maps. - Sample Location	5, 14, 15   G, I
Natural drainage and depth to gley and hence to water table after wet periods	13, 13s  moderate - 60-90cm
Potential rooting depth, texture, and limiting layer	13   45-60cm   silt loam/clay loam on sand 13s 30-45cm   silt loam/clay loam on sand
Available water capacity	13   50-75mm 13s 30-50mm
Infiltration rate	13    if not compacted - moderate          if compacted - slow 13s  moderate
Permeability rate	Rapid
Susceptibility of topsoil to pugging and compaction	13,    very high 13S,  high
Unfavourable soil characteristics	13      heavy topsoil in lower areas - easily            compacted, difficult to work, good tilth            only achieved in right moisture conditions            slow infiltration  13s   topsoil silty and easily compacted             rapid permeability

 

Soil Management

Artificial drainage: drain spacing	13,   40m 13s, 60-80m
Cultivate when moist to avoid: compaction	13, 13s
Irrigation:- Recommended method application rate Dripper spacing for continuous wetted strip Amount and frequency	13           sprinkler to prevent waterlogging  13           slow - <4mm/hr 13, 13s  60cm if 4 l/hr drippers used 13           little (15-25mm), often to prevent surface                  ponding 13s         little (15-25mm), often to prevent water loss

 
Karamu silt loam/clay loam(13,13s) (photo J. Watt)