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MOP5

Location: Red Hill SouthAustralian Soil Classification: Bleached-Vertic, Eutrophic, Brown CHROMOSOL (thick surface horizons)
Land Use: Vineyard


MOP5 landscape
MOP5 Landscape


Soil Profile Morphology:

Surface Soil

A110-15 cmDark greyish brown (10YR 4/2); fine sandy loam; moderate medium to fine sub-angular blocky structure; firm (dry) consistence; pH 5.6MOP5 profile
MOP5 Profile
A1215-25 cmBrown (10YR 4/3); fine sandy loam; moderate medium to fine sub-angular blocky structure; firm (dry) consistence; field pH 6.5
A2125-32 cmLight yellowish brown (10YR 6/4), conspicuously bleached very pale brown (10YR 7/3 dry); silty loam; weakly structured; very firm (dry) consistence; contains very few (1%) ferromanganiferous nodules; field pH 6.8
A2232-45 cmBrown (10YR 5/3), conspicuously bleached very pale brown (10YR 7/3 dry); light silty clay loam; massive; very firm to strong (dry) consistence; contains few (2-5%) ferromanganiferous nodules; pH 5.9; sharp change to:
Subsoil
B2145-70 cmYellowish brown (10YR 5/4) with brown (7.5YR 5/4) mottles; medium heavy clay; weak to moderate coarse prismatic, parting to moderate to strong coarse to medium sub-angular blocky structure (strong medium to fine polyhedral structure in patches); pH 5.9:
B2270-110 cmYellowish brown (10YR 5/4) with reddish brown (5YR 5/4) mottles; medium heavy clay; strong coarse to fine polyhedral structure (with moderate to strong medium lenticular structure in patches); strong (dry) consistence; contains few (2%) manganese stains; pH 5.9:
B23110-130 cmYellowish brown (10YR 5/4) with reddish brown (5YR 5/4), yellowish brown (10YR 5/6) mottles – becoming stronger red and grey mottling at depth; strong coarse to very fine polyhedral structure (shiny ped faces); pH 5.9.

Key Profile Features:

Soil Profile Characteristics:

pH
Salinity Rating
Surface
(A1 horizon)
Moderately Acid
Subsoil
(B21 horizon)
Moderately Acid
Deeper subsoil
(at 100-130 cm)
Moderately Acid
1complete dispersion after remoulding


MOP5 graphs
Horizon
Horizon Depth
pH (water)
pH CaCl2
EC
1:5
NaCl
Exchangeable Cations
Ca
Mg
K
Na
Meq/100g
A11
0-15
5.6
4.9
0.1
4.9
1.4
0.19
0.25
A12
15-25
A21
25-32
A22
32-45
5.9
5.2
<0.05
1
0.59
<0.05
0.13
B21
45-70
5.9
5.4
0.09
2.8
5.6
0.11
0.52
B22
70-110
5.9
5.4
0.07
2.7
6.4
0.12
0.58
B23
110-130
5.9
5.6
0.1
2.6
7.8
0.14
0.7

Horizon
Horizon Depth
Ex Al
mg/kg
Ex Ac
meq/100g
Field
pF 2.5
Wilting Point
pF4.2
g/100g
Coarse Sand
(0.2-2.0mm)
%
Fine Sand
(0.02-0.2mm)
%
Silt
(0.002-0.02mm)
%
Clay
(<0.002mm)
%
A11
0-15
12
A12
15-25
A21
25-32
A22
32-45
3.1
B21
45-70
8.8
B22
70-110
8.6
B23
110-130
CC BY 4.0 AU

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