Farndon

23-24-25 - Farndon

Soil Properties

Parent material	Water deposit (alluvium) of Tutaekuri river from greywacke and/or sandstone and limestone
Characteristic site and soil features	site adjacent to old lagoon (pre 1931); slightly saline soils with saline ground water; textures varying from clayey in depressions to sands in higher areas and silts in between
Associated soils not shown within map unit at map scale but separated out in more detailed maps. - Sample Location	26, 27   M
Natural drainage and depth to gley and hence to water table after wet periods	23, 25   imperfect - 30-60cm 24          poor -        <30cm
Potential rooting depth, texture, and limiting layer	23          >30cm silt loam on sandy loam 23s        30-60cm sand on silt loam  24          >30cm clay loam  on sand  25          >30cm sandy loam  on sand
Available water capacity (AWC)	23          50-75mm 23s        20-50mm  24         30-75mm 25          30-75mm
Infiltration rate	23, 25   moderate 23s       rapid 24         slow
Permeability rate	23            moderate 23s, 25   rapid 24            slow
Susceptibility of topsoil to pugging and compaction when wet	23        high 23s      low 24        extremely high 25        moderate
Susceptibility to wind erosion when dry	23s      very high
Unfavourable soil characteristics	all        lime deposits in subsoil, high pH (alkaline) 23       silty topsoil difficult to manage in wet conditions             slightly saline 23s     sand topsoil susceptible to wind erosion             rapid infiltration perched gley on slowly             permeable layer, low AWC 24       heavy topsoil - easily compacted and difficult to             manage in wet, slow infiltration, rapid              permeability,saline 25       rapid permeability, very slightly saline

 

Soil Management

Artificial drainage: drain spacing	23 25           40m 23s      40-60m 24        20-40m
Cultivate when moist to avoid: compaction wind erosion	23, 24 23s
Irrigation:- Recommended method application rate Dripper spacing for continuous wetted strip Amount and frequency	23s, 25    sprinkler to prevent water loss 24             sprinkler to prevent waterlogging 24             slow <4mm/hr                   If 4 l/hr drippers used                   23, 24 - 60cm,  25 - 40cm, 23s - 30cm 23s, 25    little (10-25mm), often to prevent water loss 24             little (15-30mm), often to prevent waterlogging

 
Farndon silt loam (23) (photo J. Watt)