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PVI3

Location: PVI Hamilton

Australian Soil Classification: Ferric, Eutrophic, Brown CHROMOSOL (thick, clay loamy surface)
Northcote Factual Key: DY3.42
Great Soil Group: Possibly yellow podzolic.

Geology: Tertiary/Quaternary basalt.
General Landscape Description: Mid-slope of a low rise.
Soil Mapping Unit: Monivae gravelly loam (slope phase).

Site Description: Edge of a cereal cropping paddock.

Photo: Soil Pit PVI 3 Landscape
 PVI3 Landscape


Soil Profile Morphology:

Surface Soil

A10-15 cmDark brown (10YR3/3); very fine sandy clay loam; weak coarse blocky structure; weak consistence (dry); pH 5.6; clear change to:

Photo: Soil Pit PVI 3 Profile
PVI3 Profile
A2115-30 cmDark brown (10YR3/3); sporadically bleached; very fine sandy clay loam; firm consistence (dry); many (40%) ferruginous nodules; pH 6.3; clear change to:

A2230-40 cmClay loam (very fine sandy); massive; very firm consistence (dry); very many (60%) ferruginous nodules; pH 6.6; clear change to:

Subsoil

B2140-65 cmYellowish brown (10YR5/6) with many (40%) brownish yellow (10YR6/8) and yellowish red (5YR5/8) mottles; light medium clay; weak medium prismatic, parting to strong coarse to medium blocky structure; strong consistence (dry); very many (60%) ferruginous nodules (2-10 mm); few (5%) ferruginous basalt fragments (5-8 mm); some manganese staining; pH 6.8; gradual change to:


B22
65-120 cm
Yellowish brown (10YR5/4) with many (40%) strong brown (7.5YR5/8) and yellowish red (5YR5/8) mottles; light medium clay; weak medium prismatic, parting to strong coarse to medium to fine blocky structure; few (5%) ferruginous basalt fragments; strong consistence (dry); pH 6.5; gradual change to:

B23120+ cmYellowish brown (10YR5/4) with light grey (10YR7/1), reddish yellow (7.5YR6/8) and dark red (2.5YR4/8) mottles; medium heavy clay; firm consistence (moist); pH 6.5.

Key Profile Features:
Soil Profile Characteristics:


pH
Salinity Rating
Surface Soil
(A1 horizon)
Moderately Acid
Low
Non-Sodic
None
Upper Subsoil
(40 - 65 cm)
Slightly Acid
Low
Non-Sodic
None
Deeper Subsoil
(120 cm)
Slightly Acid
Low
Non-Sodic
None

Graph: pH in PVI 3
Graph: Salinity in PVI 3
Graph: Sodicity in PVI 3
Graph: Clay in PVI 3

Horizon
Horizon Depth
(cm)
pH
(water)
pH
(CaCl2)
EC 1:5
Exchangeable Cations
Ca
Mg
K
Na
meq/100g
A1
0-15
5.6
4.3
0.07
4.8
2.4
0.14
0.27
A2
15-30
6.3
5.0
0.06
3.8
2.6
0.11
0.37
A22
30-40
6.6
5.4
0.07
4.9
3.9
0.13
0.52
B21
40-65
6.8
5.7
0.12
5.5
6.5
0.22
1.0
B22
65-120
6.5
5.8
0.14
5.2
7.2
0.20
1.3
B23
120+
6.5
6.2
0.17
3.9
6.9
0.14
1.5


Horizon
Horizon Depth
(cm)
Exchangeable
Aluminium mg/kg
Exchangeable Acidity
meq/100g
Field Capacity
pF2.5
Wilting Point
pF4.2
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
0-15
12
35
13
4
40
26
25
A2
15-30
<10
28
11
14
37
20
26
A22
30-40
27
13
20
28
15
34
B21
40-65
9.3
42
25
8
16
10
66
B22
65-120
9.9
47
27
7
16
9
67
B23
120+

Profile Described By: Mark Imhof, Paul Rampant (January /2001).
CC BY 4.0 AU

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