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Site SW57

Location: Cooriemungle.Australian Soil Classification: Humose, Dermosolic, Redoxic HYDROSOL
General Landscape Description: Flat valley floor in dissected plain.Site Description: Drained dairy grazing paddock.
Geology: Quaternary alluvium derived from Gellibrand Marl and Hanson Plain Sand.

Image:  GP57 and 58 Landscape
Site SW57 Landscape


Soil Profile Morphology:

Surface Soil

A10-20 cmVery dark brown (10YR2/2); clay loam; weak polyhedral (10-20 mm in size) structure; weak consistence; clear and smooth change to:

Image:  GP57 Profile
Site SW57 profile
Note: Surface (A1) has been stripped from the soil profile.
Subsoil

B21g20-90/95 cmLight brownish grey (10YR6/2 moist and 10YR7/2 dry), with faint, fine, brownish yellow (10YR6/8 moist) mottles common (10-15%); fine sandy clay loam; apedal weak prismatic structure in upper horizons, becoming increasingly pedal at depth with a weak medium prismatic, parting to medium blocky structure; firm consistence; pH 5.7; clear change to:

B22g90/95+cmGrey (10YR5/1 moist) with many (20-30%) brownish yellow (10YR6/8) mottles; heavy clay; very coarse prismatic, larger at depth, parting to very coarse to coarse blocky structure; very firm consistence.

Key Profile Characteristics:

pH
Salinity Rating
Subsoil
(B21 horizon)
Moderately Acid
Low
Non-Sodic

Horizon
Horizon Depth
(cm)
pH
(water)
pH
CaCl2
EC
1:5
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
B21g
20-90
5.7
4.9
0.06
2
3
0.08
0.26

Horizon
Horizon Depth
(cm)
Exchangeable Aluminium
mg/kg
Exchangeable Acidity
meq/100g
Coarse Sand
(0.2-2.0 mm)
Fine Sand
(0.02-0.2 mm)
Silt
(0.002-0.02 mm)
Clay
(<0.002 mm)
B21g
20-90
58
5.1
3
52
26
21

Management Considerations:

Whole Profile
  • The soil profile is likely to be saturated for a number of months during most years.
Notes:
  • An additional subsoil horizon was sampled at a profile 10 m east of SW41 to ensure adequate coverage of soil variability at this site.
Profile Described By: Mark Imhof and Richard MacEwan, April 1999.
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