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SW64

SW64 landscape
Close up of A1 horizon showing prolific roots attenuated by waterlogged (mottled) subsoil

    Site Code
SW64

SW64 profile

Humose–Acidic, Kandosolic, Redoxic HYDROSOL
    Location
Simpson; north of Tomahawk Creek Road
    Landform
Gently undulating plain
    Geology
Neogene Hanson Plain Sand Formation
    Element
Gentle slope
    Slope
1%
    Aspect
South
Horizon
Depth (cm)
Description
A11
0–40/45 Black (2.5Y2.5/1), grey (2.5Y6/1 dry) to light yellowish brown (2.5Y6/4 dry); light fine sandy loam; weakly pedal, very weak consistence; moderate amount of roots present; pH 5.1; clear boundary to:

A12
45–55/60 Greyish brown (2.5Y5/2 moist and dry); loamy sand; apedal; firm consistence; diffuse boundary to:

B21g
55/60–120 Yellowish brown (10YR5/8) and light yellowish brown (2.5Y6/3) mottled; clayey sand; apedal; firm consistence; pH 4.8; gradual boundary to:

B22g
120 +Light brownish grey (10YR6/2) with very coarse prominent yellowish brown (10YR5/6 and 5/8) mottles; clayey sand; apedal.

Management considerations
Acidity of the profile and waterlogging are the major limitations. The high organic carbon content of the topsoil (7.7%) and overall topsoil depth are compensating factors.

Analytical data
Site SW64
Sample
depth
pH
EC
NaCl
Ex Ca
Ex Mg
Ex K
Ex Na
Ex Al
Ex acidity
FC
(-10kPa)
PWP
(-150kPa)
KS
FS
Z
C
Horizon
cm
H2O
CaCl2
dS/m
%
cmolc/kg
cmolc/kg
cmolc/kg
cmolc/kg
mg/kg
cmolc/kg
%
%
%
%
%
%
A10–405.14.50.26N/R2.30.50.50.31716N/RN/R3738.4104.5
B21g55–1204.84.20.06N/R0.090.54<0.050.181505.7N/RN/R27.741.611.520.5
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