MM508

Site: MM508	Land Unit: Dixie Sedimentary
*Aust. Soil Class.:* Bleached-Mottled, ?, Brown CHROMOSOL (confidence level 3)

General Land Unit Description:
The unit consists of gently undulating plains south of Terang. The soils are commonly mottled brown texture contrast soils (Chromosols). The open depressions between the very slight rises consist of acidic grey cracking clays (Grey Vertosols). It is difficult to work these soils for cropping before November, due to waterlogging, but peas have been grown successfully on these soils.

Site Description:

Geology: Tertiary sedimentary	Landform pattern: Gently undulating to level plains
Position in landscape: Flat	Internal drainage: Imperfectly drained

Soil Profile Morphology

A1	0-15 cm	Very dark brown (10YR2/2) loam, massive structure, weak consistence when dry, pH 4.8. Sharp transition to:
A2	15-40 cm	Yellowish brown (10YR5/4) fine sandy clay loam, conspicuously bleached (10YR7/3) when dry. Sharp transition to:
	Subsoil
B21	40-70 cm	Dark yellowish brown (10YR4/4) medium clay, strong brown mottles (7.5YR5/6), weak blocky structure (5-10 mm), pH 5.7. Gradual transition to:
B22	70+ cm	Yellowish brown (10YR5/4) medium clay, dark red mottles (2.5YR4/8), weak blocky structure (5-10 mm), pH 5.5.

Key profile features:

Acidic topsoil
Strong textural contrast between topsoil and subsoil
Subsoil is dispersive when worked when wet
Mottled subsoil
Bleached A2 horizon
Acidic subsoil

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