IS15

Location: Murtoa

Australian Soil Classification: Calcic, Mottled-Mesonatric, Red SODOSOL

Northcote Factual Key: Dy3.43
Great Soil Group: solodized solonetz
Soil Type: Haven Sandy Loam.

General Landscape Description: Terrace flat within an anastomotic plain.
Geology: Quaternary Shepparton Formation: fluvial silt, sand and minor gravel

IS15 Landscape

Soil Profile Morphology:

Surface soil

A1	0-5 cm	Brown (7.5YR4/4); fine sandy loam; plastic; hard setting surface condition; weak coarse granular structure; weak consistence dry; pH 6.2; sharp and wavy boundary to:	IS14 Profile
A2e	5-10 cm	Brown (7.5YR4/4) conspicuously bleached (7.5YR7/2d); fine sandy loam; weak coarse granular structure; weak consistence dry; pH 8.2; sharp and wavy boundary to:
A3e Subsoil	10-15 cm	Conspicuously bleached (7.5YR7/2d); sandy loam; massive (structureless) with cemented capping; weak consistence dry; pH 8.2; sharp and wavy boundary to:
B21	15-50 cm	Yellowish red (5YR5/6) with reddish brown (2.5YR4/4) mottles; medium clay; plastic; moderate very coarse columnar structure; strong consistence dry; sticky consistence wet; pH 9.3:
B22	50-90 cm	Yellowish red (5YR5/6) with reddish brown (2.5YR4/4) mottles; medium clay; plastic; moderate very coarse columnar structure; strong consistence dry; sticky consistence wet; pH 9.8; clear and wavy boundary to:
B31k	90-140 cm	Yellowish brown (10YR5/4); sandy clay loam; plastic; weak coarse subangular blocky structure; strong consistence dry; moderately sticky consistence wet; few (2-10%) soft carbonate segregations in bands; pH 9.8.

Horizon	Sample Depth cm	pH		EC dS/m	Sodium Chloride %	Exchangeable Calcium cmol-/kg	Exchangeable Magnesium cmol-/kg	Exchangeable Potassium cmol-/kg	Exchangeable Sodium cmol-/kg	Total Nitrogen %	Organic Carbon %	Bulk Density	Exchangeable Acidity cmol-/kg	Field Capacity -30okPa	Permanent Wilting Point -1500okPa	Coarse Sand %	Fine Sand %	Silt %	Clay %
		H2O	CaCl2
A1	0–5	6.2		0.09	0.01	1.7	0.6	0.7	0.1	0.1	1.42		3		3.6	7	68	15	8
A2e	5–10	6.2	5	0.06	0.01	2.8	0.9	0.4	0.1	0.05	0.86	1.37	2.1	15.1	2.7	8	69	15	8
A3e	10–15	8.2		0.09	0.02	1.9	2.1	0.4	0.8	0.03	0.29		0.9		5.2	6	61	18	15
B21	15–50	9.3		0.39	0.04	4.3	8.3	1.4	4.2	0.04	0.2				17.1	3	37	16	44
B22	50–90	9.8		0.57	0.06	1.4	5.3	0.7	4.5	0.02	0.07	1.43		30.4	10.9	1	51	22	26
B31k	90–140	9.8		0.36	0.04	1	3.6	0.4	3	0.01	0.04	1.53			20	1	69	14	16
B32	140–195	9.8		0.32	0.03										8.7	1	61	19	19
B33	195–230	8.9		0.23	0.04											15	40	18	27

• Texture contrast profile with clay dominant in upper subsoil
• Alkaline soil, slightly decreasing at depth, high level of nutrients in upper subsoil (B22 horizon)
• Thin surface and subsurface horizon with, poor structure and high fine sand component
• Subsurface soil is leached with fewer nutrients than above or below
• Subsoil is sodic, becoming strongly sodic with depth and slight h salinity values in subsoil
• Subsoil is mottled indicating some restricted drainage
• Landform element, plain; slow site drainage, unless near drainage line