Agency Code: 501 Project Code: KLC Site Code: 0494
Described by: Heather Percy Date: 07/10/1992

Observation type: soil pit Category: full description
Lab Analyses: Detailed chemical and physical analyses.

Location: MGA94 Zone: 50  517860 mE  6341258 mN Elevation (m): 315  Map sheet:  Wagin 100K
Location notes: Narrakine Gully catchment, Narrogin LCD, Soil Pit No 5
Site notes: 
Disturbance: Complete clearing; past cultivation.

Landform
Landform pattern: low hills	Slope:  6 %
Relief/modal slope: undulating low hills
Landform element: hillslope
Morphological type: mid-slope	Slope curvature: uniform slope
Pattern Relief:  low hills	Microrelief: 60 m

Surface and Hydrological Properties
Rock outcrop: 0 %  
Surface coarse fragments: few subangular gravel sized dolerite; no stones and boulder sized
Physical properties: Hardsetting; ; hardsetting; ; moderately slow profile permeability; deep soil

Geology: adamellite

Vegetation
Type:  grassland; Surrounded by:  grassland
Notes: York gum on nearby granite outcrop

Land use
Site: Cropping (may include grazing in rotation). Surrounds: Cropping (may include grazing in rotation).

Visible erosion, assessed flooding and salinity
no flooding, no ponding, no salinity.

Current Classification
WA Soil Group: (1999) Red shallow loamy duplex
Australian Soil Classification: (2002) Haplic Eutrophic Red Chromosol
ASC confidence: very high
Soil Series: Four Acre
Map Unit: 257De_3

Other Classifications
Northcote PPF: Dr2.22

Soil Profile Description

Horizon	Depth (cm)	Description	
A1	0-8	Very dusky red (10R 2/2 moist) gritty medium sandy loam; no mottles; loose moist consistence; apedal, massive structure; no segregations segregations; 10% subangular quartz fine gravel sized coarse fragments; moderately rapid permeability; common very fine roots; pH 6 (Raupach and Tucker); clear, smooth boundary.	
A2	8-25	Reddish brown (2.5YR 4/4 moist) gritty coarse sandy loam; no mottles; very weak moderately moist consistence; apedal, massive structure; no segregations segregations; 5% subangular quartz fine gravel sized coarse fragments; moderately rapid permeability; common fine roots; pH 6.5 (Raupach and Tucker); clear, smooth boundary.	
B21t	25-45	Red (2.5YR 4/6 moist) gritty medium clay; no mottles; very firm moderately moist consistence; rough-ped fabric; pedal, strong, 50-100 mm, polyhedral and  20-50 mm, polyhedral structure; no segregations segregations; no coarse fragments; moderately slow permeability, slow dispersion, rapid slaking; few fine roots; pH 7.5 (Raupach and Tucker); notes: Parting to 5 PO; gradual, wavy boundary.	
B22t	45-85	Brown (7.5YR 4/4 moist) medium clay; no mottles; firm moderately moist consistence; smooth-ped fabric; pedal, strong, 50-100 mm, polyhedral and  20-50 mm, polyhedral structure; no segregations segregations; no coarse fragments; moderately slow permeability, non-dispersing, rapid slaking; few fine roots; pH 7.5 (Raupach and Tucker); notes: Parting to 5 PO; clear, wavy boundary.	
C	85-150	Dark yellowish brown (10YR 4/6 moist) gritty light clay; few fine distinct very dark grey (10YR 3/1 moist)  substrate material inclusions; apedal, massive structure; no segregations segregations; 10% subangular gabbro fine gravel sized coarse fragments; moderately slow permeability; no roots; pH 7.5 (Raupach and Tucker); notes: Weathered dolerite; abrupt, smooth boundary.	
R	150+	Apedal, massive structure; no roots; notes: Dolerite.	

Lab Results (501 KLC 0494)

Basic Chemistry

Sample	Horizon	Match	Depth	pH_w	pH_CaCl2	EC	OC_wb	N_kjel	P_kjel	P_HCO3	PRI	K_HCO3	
A	1	A	0-8	6.6	6.3	8	1.19	0.096	140		5		
B	2	A	8-25	6.9	5.7	2	0.25	0.024	46		4.9		
C	3	A	25-45	7.5	6.2	2	0.18	0.022	29		24		
D	4	A	45-85	7.5	6.1	2	0.21	0.024	84		69		
E	5	A	85-150	7.7	6.5	2	0.04	0.005	690		12		
S	1	C	0-11		5.8								
T	2	C	16-26		5.87								
U	3	C	36-46		6.34								
Z	1	C	0-10	6	5.2	11	1.71	0.14	180	15		>300	

Exchangeable Cations

Sample	Horizon	Match	Depth	CEC	Exch_Ca	Exch_Na	Exch_K	Exch_Mg	Sum_Exch	ESP	CaMgR_Exch	Exch_cats%	Base_stat	
A	1	A	0-8	9 (1)	6.45 (1)	0.2 (1)	0.54 (1)	1.01 (1)	8.2 (1)	2 (2)	6.39 (1)	91 (2)	85.42 (2)	
B	2	A	8-25	6 (1)	4.05 (1)	0.13 (1)	0.21 (1)	0.88 (1)	5.27 (1)	2 (2)	4.6 (1)	88 (2)	45.04 (2)	
C	3	A	25-45	12 (1)	7.65 (1)	0.23 (1)	0.16 (1)	3.64 (1)	11.68 (1)	2 (2)	2.1 (1)	97 (2)	41.71 (2)	
D	4	A	45-85	29 (1)	18.02 (1)	0.54 (1)	0.39 (1)	10.29 (1)	29.24 (1)	2 (2)	1.75 (1)	101 (2)	70.63 (2)	
E	5	A	85-150	30 (1)	14.95 (1)	0.51 (1)	0.24 (1)	8 (1)	23.7 (1)	2 (2)	1.87 (1)	79 (2)	408.62 (2)	

Particle Size Analysis

Sample	Horizon	Match	Depth	gt2mm	s1000_2000	s600_1000u	s300_600u	s180_300u	s150_180u	s106_150u	s75_106u	s20_75u	silt	clay	
A	1	A	0-8	0	18.4	15.8	15.8	7	2.3	3.7	3.7	13.8	9.8	9.6	
B	2	A	8-25	6.84	19.7	16.1	15.7	8	2.1	4.2	3.9	11.2	7.4	11.7	
C	3	A	25-45	0	11.7	13	13.3	6.7	2	3.5	3.3	10.9	7.6	28	
D	4	A	45-85	0	4.3	5.7	9.1	5.6	2	3.5	3.7	12.9	11.9	41.4	
E	5	A	85-150	17.64	23.1	18.2	17.6	8.9	2.3	4	3.2	10.6	6.3	5.8	
Z	1	C	0-10	9.2