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GN37

Location: Kyabram

Australian Soil Classification: Bleached-Vertic, Eutrophic, Grey DERMOSOL


Site Description: Kyabram Research Farm, edge of farm in disturbed area with trees.

GN37 landscape
GN37 Landscape

Soil Profile Morphology:

Surface Soil
A10-10/15 cmDark grey (10YR4/1); light clay to light clay (fine sandy); platey due to compaction; strong consistence dry; ferruginous and manganiferous staining; roots along plates; pH 7.5; clear change to:
GN37 profile
GN37 Profile
A210/15-40 cmGrey (10YR5/1) discontinuous; rusty root channel mottling; sporadic bleach in depression; light medium clay (fine sandy); weak-moderate very coarse prismatic, parting to moderate-strong medium blocky structure; firm consistence dry; few (2%) soft carbonates and medium to coarse (4-10 mm) carbonate nodules; macropores present; pH 7.6; wavy change to:
Subsoil
B2140-60 cmLight brownish grey (2.5Y6/2) with few (3%) faint light yellowish brown (2.5YR6/4) mottles; heavy clay; moderate fine to very fine lenticular structure; firm consistence moist; distinctive slickensides present; fine sand movement down cracks; pH 8.2; gradual change to:
B2260-110 cmLight yellowish brown (2.5YR6/3) with faint light yellowish brown (2.5YR6/4) mottles; heavy clay; weak consistence moist; pH 8.7; gradual change to:
B3110-160 cmStrong brown (7.5YR5/6) with light brownish grey (10YR6/2) mottles common; light clay to light medium clay; weak-moderate coarse polyhedral, parting to medium polyhedral structure; weak consistence moist; pH 8.3.

Soil Profile Characteristics:
pH
Salinity Rating
Surface Soil
(A11 horizon)
Slightly Alkaline
Extremely High
Sodic
-1
Upper Subsoil
(B21 horizon)
Moderately Alkaline
Medium-High
Sodic
-2
Deep Subsoil
(at 110-160 cm)
Moderately Alkaline
Very High
Non-Sodic
-
1 Moderate dispersion after remoulding. 2 Strong dispersion after remoulding.

GN37 graphs


Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC
dS/m
Sodium Chloride
%
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A1
0-10/15
7.5
6.6
2.2
0.35
8.9
13
9.9
4.1
A2
10/15-40
7.6
7.1
0.77
0.13
4.1
5.5
4.2
1.8
B21
40-60
8.2
7.7
0.71
0.12
4.4
7.2
2.4
1.8
B22
60-110
8.7
8.6
1.1
0.20
3.7
8.2
3.6
1.0
B3
110-160
8.3
7.4
1.4
0.31
3.2
7.8
3.7
0.7


Horizon
Horizon Depth
(cm)
Exchangeable Acidity
meq/100g
Field Capacity
pF 2.5
Wilting Point
pF 4.2
Coarse Sand
(0.2-2.0 mm)
Fine Sand
(0.02-0.2 mm)
Silt
(0.002-0.02 mm)
Clay
(<0.002 mm)
A1
0-10/15
50.9
28.0
9
20
21
30
A2
10/15-40
2.5
12.5
1
30
20
35
B21
40-60
29.2
14.0
0
31
20
42
B22
60-110
33.2
16.3
0
23
25
47
B3
110-160

Profile Described By: Mark Imhof, Austin Brown, Nathan Robinson and Sonia Thompson (June 2005).
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).

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