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CRC18

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Location: Lexton
Aust. Soil Class.: Vertic (& Magnesic), Mottled-Subnatric, Red SODOSOL (medium to thick very gravelly surface horizons)

General Site Description: Gently undulating rise
Site Description: Pasture
Geology: Cambrian/Ordovician sediments

Photo: Landscape Photo Bet Bet soil pits 1, 2 and 3
CRC18 Landscape

Soil Profile Morphology:

Surface Soil
Photo: Profile Photo Bet Bet soil pit 3
CRC18 Profile
A10-10 cmVery dark greyish brown (10YR3/2); fine sandy loam; hardsetting; weak coarse angular blocky, parting to weak medium angular blocky structure; many (25%) fine (2-20 mm) angular and subangular quartz fragments; pH 5.6; clear change to:
A2110-25 cmBrown (10YR4/3) conspicuously bleached (10YR7/2 dry); fine sandy loam; massive; very firm consistence (dry); many (50%) fine (2-25 mm) subangular quartz fragments; pH 5.8; clear change to:
A2225-45 cmYellowish brown (10YR5/4) conspicuously bleached (10YR7/2 dry); light sandy clay loam; massive; very firm consistence (dry); very few (<2%) medium to coarse (2-25 mm) ferruginous nodules; very many (50-70%) few to many fine (2-4 mm) quartz fragments; pH 6.2; clear change to:
A2345-50 cmLight yellowish brown (2.5Y6/4) and yellowish red (5YR5/6) conspicuously bleached (10YR7/2 dry); coarse sandy clay loam; massive; strong consistence (dry); very few (<2%) medium to coarse (5-20 mm) ferruginous nodules; macropores present; pH 6.1; abrupt and wavy change to:

Note: in some areas there may only be a surface (A1) horizon overlying clay subsoil at 10 cm depth. In other areas the surface (A1) horizon overlies a bleached (A2) horizon, and the subsoil can be as much as 60 cm from the surface.
Subsoil
B2150-65 cmDark red (2.5YR4/6) with many (20%) medium (5-15 mm) reddish yellow (7.5YR6/8) mottles; light medium clay (superplastic); strong coarse angular blocky, parting to strong medium angular blocky structure; strong consistence (dry); few (1-2%) fine (2-5 mm) quartz fragments; pH 5.9; gradual change to:
B2265-85 cmBrownish yellow (10YR6/6) with many (40%) medium (5-15 mm) distinct dark yellowish brown (10YR4/6) mottles; light medium clay; strong consistence (dry); pH 5.4; clear change to:
B2385-110 cmDark yellowish brown (10YR4/6) with distinct light grey (2.5Y7/2) mottles; light medium clay; weak to medium very coarse prismatic, parting to medium very coarse blocky structure; smooth-faced peds; strong consistence (dry); few (2-5%) medium (6-20 mm) angular quartz fragments; slickensides present; gradual change to:
B24110-140 cmDark red (2.5YR4/6) with distinct light grey (2.5Y7/2) mottles; light medium clay (silty); medium coarse polyhedral structure; smooth-faced peds; slickensides present; pH 5.6; pH 5.7; clear change to:
BC140-150 cmLight yellowish brown (2.5Y6/3) with reddish yellow (5YR6/6) mottles; light medium clay:
R+50+ cmSaprolite


Key Profile Features: Soil Profile Characteristics:


pH
Salinity Rating
Surface
(A1 horizon)
Moderately Acid
Very Low
Non-Sodic
None1
Subsoil
(B21 horizon)
Moderately Acid
Low
Sodic
Moderate to Complete
Deeper subsoil
(at 55-70 cm)
Moderately Acid
Low
Sodic
Strong
1 Slight dispersion after remoulding

Photo: Bet Bet 3 graphs

Horizon
Horizon Depth
pH
(water)
pH
CaCl2
EC
dS/m
NaCl
%
Exchangeable Cations
Ex Al
mg/kg
Ex Ac
meq/100g
Field
pF2.5
Wilting Point
pF4.2
Coarse Sand
(0.2-2.0mm)
Fine Sand
(0.02-0.2mm)
Silt
(0.002-0.02mm)
Clay
(<0.002mm)
Ca
Mg
K
Na
meq/100g
A1
0-10
5.6
4.8
0.11
5.3
0.89
0.38
0.27
<10
10
32
-
16
51
14
10
A21
10-25
5.8
4.6
<0.05
0.75
0.19
0.08
0.11
24
3.0
21.7
-
21
55
17
5
A22
25-45
6.2
5.0
<0.05
0.96
0.40
0.10
0.17
<10
-
16.2
-
29
46
12
9
A23
45-50
6.1
4.6
0.05
0.89
1.1
0.11
0.37
54
-
18.9
7.4
21
38
20
19
B21
50-65
5.9
4.8
0.17
2.2
3.8
0.24
1.3
81
11
38.3
22.7
4
16
12
65
B22
65-85
5.4
4.3
0.22
0.71
6.3
0.32
2.6
370
18
47.3
29.2
1
3
6
86
B23
85-110
5.2
4.3
0.25
43.0
25.7
3
1
11
72
B24
110-140
5.6
4.9
0.27
NR
NR
NR
NR
2
5
23
66
BC
140-150
5.7
4.3
0.17
0.14
15
0.30
6.6
400
15
10
7
33
46

Notes:
CC BY 4.0 AU

This page contains material sourced from the Victorian Resources Online (VRO) website, originally published by the State Government of Victoria.

The content is provided under the Creative Commons Attribution 4.0 Australia licence (CC BY 4.0 AU).

This material is presented in an archived form and is no longer maintained or updated. It is provided for general information only and should not be relied upon as current advice.

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