WWPS3

Location: Longeranong

Australian Soil Classification: Epicalcareous- Endohypersodic, Self-mulching, Grey VERTOSOL

Northcote Factual Key: Ug 5.24
Soil Type: Kalkee Clay
Soil Map Unit: Kc-Lc (complex)

General Landscape Description: Prior stream in a flood plain. Floods infrequently. Slightly higher in landscape to WWPS1.
Site Description: Cropping paddock with occasional grazing. Poorly drained.
Native Vegetation: Savannah Woodland (yellow gum) with areas of grassland.
Geology: Cropping paddock with occasional grazing. Poorly drained.

Image: WWPS03 landscape

WWPS3 Landscape

Soil Profile Morphology:

Surface Soil

A11	0-5 cm	Dark greyish brown (10YR4/2); loose surface condition; light clay (sub plastic); weak very fine blocky structure; rough fabric; strong consistence dry; pH 7.2; sharp and wavy change to:	WWPS3 Profile
A12	5-15 cm	Dark greyish brown (10YR4/2); light medium clay (silty); moderate coarse blocky structure: rough fabric; very strong consistence dry; contains very few medium calcareous nodules; pH 7.8; sharp and broken change to:
A2	15-30 cm	Dark grey (2.5Y4/1); medium clay; strong coarse prismatic, parting to strong fine angular blocky structure; smooth fabric; very strong consistence dry; common distinct slickensides evident; pH 8.2; changes to:
Subsoil
B21	30-70 cm	Dark grey (10YR4/1); heavy clay; strong very coarse prismatic, parting to strong coarse angular blocky structure; smooth fabric; very strong consistence dry; many distinct slickensides evident; pH 8.6; gradual and wavy change to:
B22	70-100 cm	Dark grey (10YR4/1); heavy clay; strong very coarse blocky, parting to strong coarse angular blocky structure; smooth fabric; strong consistence dry; contains very few fine and medium calcareous nodules; few faint slickensides evident; slightly calcareous; pH 9.2; gradual and wavy change to:
B23	100-130 cm	Dark greyish brown (10YR4/2), with common fine faint brown mottles; medium heavy clay; moderate very coarse blocky, parting to moderate coarse angular blocky structure; smooth fabric; strong consistence dry; contains very few fine and medium calcareous nodules; slightly calcareous; pH 9.2.

Soil Profile Characteristics:

-	pH	Salinity	Sodicity	Dispersion
Surface (A11 horizon)	Slightly Alkaline	Medium	Non-Sodic	None
Subsoil (B21 horizon)	Strongly Alkaline	Low	Sodic	Slight¹
Deeper Subsoil (at 70-100 cm)	Very Strongly Alkaline	Low	Strongly Sodic	Strong

¹Strong dispersion after remoulding.

Image: WWPS03 graphs

The surface is slightly alkaline. The upper subsoil is strongly alkaline and the deeper subsoil is very strongly alkaline.

The salinity rating in the surface is medium. The subsoil has a low salinity rating.

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

The clay content is high in the subsoil.

Boron content increases with depth.

Chemical and Physical Analysis:

Horizon	Horizon Depth (cm)	pH water	pH CaCl₂	EC dS/m	Organic Carbon %	Total Nitrogen %	Exchangeable Cations				Boron mg/kg	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)
							Ca	Mg	K	Na
							meq/100g
A11	0-5	7.2	6.9	0.41	2.6	0.22	18	4.3	4.7	0.4	2.3	40.8	19.8	9	24	27	36
A12	5-15	7.8	7.2	0.18			21	5.1	2.6	0.68	2.3	27.2	9.5	8	25	22	42
A2	15-30	8.2	7.6	0.23			23	7.9	1.5	1.5	3.3	43.2	24.4	7	16	12	61
B21	30-70	8.6	7.8	0.25			16	11	1.2	3.7	3.4	44.8	23.9	9	18	11	60
B22	70-100	9.2	8.3	0.35			11	13	1.4	5.6	9.9	48.0	26.4
B23	100-130	9.2	8.4	0.57			11	14	1.6	7.3	14

Profile Described By: John Martin, Nathan Robinson, Grant Boyle and Mark Imhof (October 2006).

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