OTR412

Location: Aire Valley

Australian Soil Classification: Melacic-Mottled, Magnesic, Red KANDOSOL
Northcote Factual Key: GN2.44

General Landscape Description: Rise
Site Description: Simple Slope Slope: 3% Aspect: Northerly
Native Vegetation: E. globulus, E. obliquan
Geology: Kl: Cretaceous Sediments; Felspathic Sandstone

Soil Profile Morphology:

Surface Soil

A1	0-10 cm	Brown (7.5YR4/2); fine sandy loam; moderate very fine crumb structure; weak consistence, slightly moist; pH 4.7; clear change to:
A21	10-20 cm	Dark greyish brown (10YR4/2, 10YR6/2d); clay loam; weak moderate parting to very fine angular blocky structure; very firm consistence, dry, pH 4.9; gradual change to:
A22	20-45 cm	Very dark greyish brown (10YR4/3, 10YR5/3d), with faint light grey and orange mottles; clay loam; strong fine subangular blocky structure; very firm consistence, dry; pH 4.7; gradual change to:
Subsoil
B2	45-60 cm	Yellowish red (5YR4/4); greyish brown (10YR5/2) mottles; clay; weak coarse columnar parting to fine and very fine angular blocky structure; very firm to strong consistence, moist; pH 4.9; changes to:
B2	60-90 cm	Diffuse change to:
C	90-120 cm	Weathered parent material.

Soil Profile Characteristics:

	pH	Salinity Rating	Sodicity
Surface (A1 horizon)	Very Strongly Acid	Medium	Non Sodic
Subsoil (B21 horizon)	Very Strongly Acid	Medium	Non Sodic
Deeper Subsoil (at 90 cm)	Moderately Acid	Medium	Sodic

The profile is very strongly acid until the deeper subsoil where it becomes moderately acid.

The salinity rating is medium in this profile.

The surface and upper subsoil is non-sodic. The deeper subsoil is sodic.

The clay content moderate and reduces to low in the C horizon.

Horizon	Horizon Depth (cm)	pH (water)	EC dS/m	Cl %	Organic Carbon %	Total N %	P ppm	K ppm	Free Fe %	Exchangeable Cations				Total Bases cmolc/kg	Ex Ac cmolc/kg	CEC cmolc/kg
										Ca	Mg	K	Na
										cmolc/kg
A11	0 - 10	4.7	0.23	0.020	5.2	0.29	16	240	1.3	2.9	2.8	0.6	0.4	6.7	17.4	24.2
A21	10 - 20	4.9	0.20	0.016	4.4	0.26	15	240	1.3	2.7	3.2	0.5	0.4	6.8	13.7	20.5
A22	20- 30	4.7	0.16	0.016	2.3	0.14	8	160	1.5	1.0	1.8	0.4	0.2	3.4	13.8	16.2
	30 - 45	4.9	0.12	0.011	1.5	0.01	7	180	1.8
B2	45 - 60	4.9	0.14	0.017	1.0	0.07	5	200	22	0.3	3.1	0.6	0.3	4.3	7.9	12.1
	60 - 90	5.6	0.11	0.011	0.5	0.05	4	200	3.9
C	90 - 120	5.7	0.17	0.022	0.2	0.02	8	140	2.5	0.1	9.9	0.3	1.6	11.9	4.9	16.9

Horizon	Horizon Depth (cm)	Gravel %	Coarse Sand (0.2-2.0 mm)	Fine Sand (0.02-0.2 mm)	Silt (0.002-0.02 mm)	Clay (<0.002 mm)
A11	0 - 10	tr	4	34	30	24
A21	10 - 20	tr	4	40	27	23
A22	20- 30	tr	2	44	29	22
	30 - 45	2
B2	45 - 60	2	3	44	27	26
	60 - 90
C	90 - 120	9	17	62	14	7

Profile Described By: Frank Gibbons, 12^th January 1965.

Profile Described By:

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