Agency Code: 501 Project Code: CHT Site Code: 1106
Described by: Brian Purdie Date: 22/04/1998

Observation type: existing vertical exposure Category: full description
Lab Analyses: Detailed chemical and physical analyses.

Location: MGA94 Zone: 50  400262 mE  6512915 mN Map sheet:  Perth 100K
Location notes: Alan & Kim Fewster, Brand Hwy, Muchea.
Site notes: Photos roll 58 - 11/13.  Deep pale sand. with hard pan at 170cm.
Disturbance: Complete clearing; never cultivated.

Landform
Landform pattern: plain
Relief/modal slope:
Landform element: plain
Morphological type: flat
Pattern Relief:  plain

Surface and Hydrological Properties
Rock outcrop:   
Surface coarse fragments: 
Physical properties: loose; ; very deep soil; water table at 160 cm; water tbl EC 158; water tbl pH 4.2

Vegetation
Notes: Eucalyptus rudis.

Species List
Eucalyptus rudis

Land use
Site: Grazing (grazing of vegetation planted by man). Surrounds: Grazing (grazing of vegetation planted by man).

Current Classification
WA Soil Group: (1999) Pale deep sand
Australian Soil Classification: (2002) Parapanic Humic Aquic Podosol
Soil Series: Fewster (provisional)
Map Unit: 213Ya_8x

Other Classifications
Northcote PPF: Uc2.12

Soil Profile Description

Horizon | Depth (cm) | Description
A1 | 0-18 | Black (10YR 2/1 moist) sand with 4-8% clay; loose dry consistence; apedal, weak, 2-5 mm, crumb structure; no coarse fragments; rapid permeability, water repellent; many fine roots; pH 6.2; EC 11 mS/m; clear, smooth boundary.
A21e | 18-50 | Dark grey (10YR 4/1 moist), light grey (10YR 7/1 dry) fine sand with 2-4% clay; loose dry consistence; apedal, single grain structure; no coarse fragments; rapid permeability, non water repellent; common medium roots; pH 5.8; EC 4 mS/m; gradual, smooth boundary.
A22e | 50-130 | Pale brown (10YR 6/3 moist), light grey (10YR 7/2 dry) medium sand with 2-4% clay; loose moderately moist consistence; apedal, single grain structure; no coarse fragments; rapid permeability, non water repellent; few medium roots; pH 4.7; EC 5 mS/m; gradual, smooth boundary.
B21w | 130-170 | Brown (10YR 5/3 moist) medium sand with 4-8% clay; weak wet consistence; apedal, single grain structure; no coarse fragments; rapid permeability; few medium roots; pH 4.6; EC 10 mS/m; notes: Fine (2mm banding) root staining, acting as aquifer; clear, irregular boundary.
B22l | 170-180 | Dark brown (10YR 3/3 moist) clayey medium sand; weak wet consistence; apedal, single grain structure; no coarse fragments; rapid permeability; no roots; pH 4.7; EC 12 mS/m; sharp, irregular boundary.
B23hm | 180-190+ | Black (10YR 2/1 moist); strong moist consistence; apedal, massive structure; no coarse fragments; rapid permeability; moderately cemented, massive, organic pan no roots; pH 4.8; EC 9 mS/m.

Lab Results (501 CHT 1106)

Basic Chemistry

Sample | Horizon | Match | Depth | pH_w | pH_CaCl2 | EC | OC_wb | N_kjel | P_kjel | PRI | Al_CaCl2
A | 1 | A | 0-18 | 6 | 4.9 | 4 | 1.76 | 0.105 | 70 | 0.2 | 0
B | 2 | A | 18-50 | 6.2 | 4.8 | 2 | 0.44 | 0.01 | 12 | 0.1 | 0
C | 3 | B | 50-90 | 5.1 | 4.2 | 4 | 0.2 | | 10 | 0 | 0
D | 3 | B | 90-130 | 5 | 4.2 | 4 | 0.16 | <0.005 | <10 | 0.1 | 0
E | 4 | A | 130-170 | 5.1 | 4.3 | 6 | 0.16 | <0.005 | 11 | -0.2 | 1
F | | | 99-99 | 5.2 | 3.9 | 9 | 0.78 | 0.015 | 35 | -0.8 |
G | 5 | A | 170-180 | 5.1 | 3.8 | 13 | 1.94 | 0.046 | 200 | 1 | 4

Exchangeable Cations

Sample | Horizon | Match | Depth | Exch_Ca | Exch_Na | Exch_K | Exch_Mg | Exch_Mn | Exch_Al | Sum_Exch | ESP | CaMgR_Exch | Base_stat
A | 1 | A | 0-18 | 3.42 (2) | 0.1 (2) | 0.07 (2) | 0.77 (2) | 0.02 (2) | <0.02 | 4.36 (1) | 2 (3) | 4.44 (1) | 290.67 (2)
B | 2 | A | 18-50 | 0.43 (2) | 0.09 (2) | <0.02 | 0.31 (2) | <0.02 | <0.02 | 0.84 (1) | 11 (3) | 1.39 (1) | 84 (2)
C | 3 | B | 50-90 | 0.07 (2) | 0.12 (2) | <0.02 | 0.05 (2) | <0.02 | <0.02 | 0.25 (1) | 48 (3) | 1.4 (1) | 41.67 (2)
D | 3 | B | 90-130 | 0.04 (2) | 0.1 (2) | <0.02 | 0.02 (2) | <0.02 | 0.02 (2) | 0.17 (1) | 59 (3) | 2 (1) | 34 (2)
E | 4 | A | 130-170 | 0.04 (2) | 0.22 (2) | <0.02 | 0.06 (2) | <0.02 | <0.02 | 0.33 (1) | 67 (3) | 0.67 (1) | 47.14 (2)
F | | | 99-99 | 0.19 (2) | 0.49 (2) | 0.06 (2) | 0.56 (2) | <0.02 | 0.32 (2) | 1.3 (1) | 38 (3) | 0.34 (1) | 54.17 (2)
G | 5 | A | 170-180 | 0.84 (2) | 1.57 (2) | 0.3 (2) | 2.82 (2) | <0.02 | 2.36 (2) | 5.53 (1) | 28 (3) | 0.3 (1) | 90.66 (2)

Particle Size Analysis

Sample | Horizon | Match | Depth | gt2mm | s600_2000u | s200_600u | s100_200u | s20_200u | s20_100u | silt | clay
A | 1 | A | 0-18 | 0 | 8.8 | 59.6 | 21.4 | 1.1 | 7.6 | 1.5 | 1.1
B | 2 | A | 18-50 | 0 | 59 | 24.8 | 6.4 | 0.6 | 98.4 | 8.2 | 1
C | 3 | B | 50-90 | 0 | 8.6 | 57.4 | 26.6 | | 6.1 | 0.7 | 0.6
D | 3 | B | 90-130 | 0 | 8.6 | 54 | 29.2 | | 6.6 | 1.1 | 0.5
E | 4 | A | 130-170 | 0 | 7.6 | 51.8 | 30.2 | | 7.6 | 2.1 | 0.7
F | | | 99-99 | | 7.6 | 52.8 | 28.2 | | 7.4 | 1.6 | 2.4
G | 5 | A | 170-180 | 0 | 8 | 47.8 | 25.6 | | 10.9 | 1.6 | 6.1
H | 6 | A | 180-190 | 0 | | | | | | |

Mechanical Analysis

Sample | Horizon | Match | Depth | BD
BD1 | 1 | B | 5-10 | 1.4
BD2 | 2 | B | 26-31 | 1.6
BD3 | 3 | B | 60-65 | 1.6
BD4 | 4 | B | 152-157 | 1.7