GHF14b

Location: Macarthur

Australian Soil Classification: Ferric (and Magnesic), Mottled-Subnatric, Yellow SODOSOL (very thick sandy surface soil)
General Landscape Description: Undulating rises
Site Description: Flat
Land Unit: Byaduk basalts
Geology: Quaternary basalt

General Land Unit Description: This land unit is a complex unit of steep slopes leading to drainage lines and gently undulating plains leading to the slopes, south east of Branxholme. The soils on the slopes leading to the drainage lines tend to be shallower than those on the plains. The soils on the plains commonly have a sandy topsoil with a bleached A2 horizon over a clay subsoil. A co-dominant soil type is a soil type lacking the sandy topsoil and tends to have a gradual increase in clay (Dermosol) similar to this site. These soils are intermixed with Sodosols.





Soil Profile Morphology

Surface

A1	0-20 cm	Very dark grey (10YR3/1) loamy sand; single grain structure; loose consistence when moderately moist; many medium roots; clear and smooth transition to:
A21	20-55 cm	Dark yellowish brown (10YR4/4) sand; single grain structure; loose consistence when moderately moist; few fine roots; clear and smooth transition to:
Subsoil
B21	75-110 cm	Light yellowish brown (10YR6/4) with many very coarse distinct strong brown (7.5YR5/6) and yellowish red (5YR5/6) mottles, light medium clay; moderate polyhedral structure (20-50 mm) parting to moderate polyhedral structure (5-10 mm); weak consistence when moderately moist; very few coarse ferruginous nodules; common very fine macropores; areal porosity 0.3%; few very fine roots; diffuse and smooth transition to:
B22	110-150 cm	Brown (10YR7/1) with many very coarse prominent dark yellowish brown (10YR4/8) and yellowish red (5YR5/8) mottles in horizontal bands, light medium clay; weak polyhedral structure (20-50 mm); firm consistence when moderately moist; few very fine macropores; areal porosity 0.05%; few very fine roots.
	150-210 cm	Similar to layer above.
	210-300 cm	Sandy clay, few remnant and live roots observed.
	300-370 cm	Grey clays, iron mottling, extremely compacted, no roots observed. Difficult for backhoe to dig through, and is an impeding layer to root growth.

Horizon	Horizon Depth (cm)	pH (water)	pH (CaCl2)	EC dS/m	Organic Carbon %	Total Nitrogen %	Exchangeable Aluminium ppm	Exchangeable Acididty meq/100g	Exchangeable Cations				Coarse Sand (0.2-2.0 mm) %	Fine Sand (0.02-0.2 mm) %	Silt (0.002-0.02 mm) %	Clay (<0.002 mm) %	Field Capacity % w/w	Wilting Point % w/w
									Ca	Mg	K	Na
									meq/100g
A1	0-20	4.5	3.9	<0.05	2.7	0.16	28		1.3	0.41	0.07	<0.05	62	24	5	5	9	6
A21	20-55	5	4.5	<0.05			41		0.42	0.15	<0.05	<0.05	61	28	6	5	6	2
A22	55-75	6.1	5.5	<0.05			<10		0.86	0.53	<0.05	0.12
B21	75-110	6.4	6	0.11			<10	7.1	0.79	5.4	0.09	0.99	28	13	5	55	27	23
B22	110-150	5.7	5.4	0.12				7.3	0.32	5.3	0.08	1.2