WIA19

		Site Code	WIA19	Episodic-Epicalcareous, Self-mulching, Grey Vertosol
		Location	Drung Drung, Horsham, western Victoria
		Landform	Anastomotic plain
		Geology	Quaternary Shepparton Formation: fluvial silt, sand and minor gravel
		Element	Plain


Horizon	Depth (cm)	Description
A1	0–10	Dark grey (10YR4/1); light clay; subplastic; cracking and self-mulching surface condition; weak subangular blocky structure; weak consistence dry; slightly sticky consistence wet; very few (<2%) hard carbonate segregations; pH 6.8; sharp and wavy boundary to:
B21	10–25	Dark grey (10YR4/1); light clay; subplastic; moderate very coarse prismatic structure; strong consistence dry; slightly sticky consistence wet; very few (<2%) hard carbonate segregations; pH 8.6.
B22	25–60	Dark grey (10YR4/1); medium heavy clay; subplastic; moderate very coarse prismatic structure; weak consistence dry; slightly sticky consistence wet; very few (<2%) hard carbonate segregations; pH 8.9; gradual and smooth boundary to:
B23	60–90	Dark grey (10YR4/1); heavy clay; plastic; coarse lenticular structure (slickensides); very few (<2%) hard carbonate segregations; pH 9.2; gradual boundary to:
B31k	90–130	Greyish brown (10YR5/2); heavy clay; plastic; coarse lenticular structure (slickensides); few (2-10%) hard carbonate segregations; pH 9.3; gradual boundary to:
B32	130–195	Greyish brown (10YR5/2); medium clay; plastic; moderate angular blocky structure; very strong consistence dry; slightly sticky consistence wet; very few (<2%) hard carbonate segregations; pH 9.4.
Management considerations
Cracking clay profile, possible texture contrast Sodic surface, possible surface sealing/impeded infiltration despite self mulching characteristic High fine sand content of surface (possible windblown inclusions) High calcium levels in upper subsoil, high magnesium levels in lower subsoil Sodic subsoil below 60 cm, increasing with depth Landform element, plain; slow site drainage, unless near drainage line

Site WIA19	Sample depth cm	pH		EC dS/m	NaCl %	Ex Ca cmol-/kg	Ex Mg cmol-/kg	Ex K cmol-/kg	Ex Na cmol-/kg	Ex Al mg/kg	Ex acidity cmol-/kg	FC -30^okPa	PWP -1500^okPa	KS %	FS %	Z %	C %
Horizon	Sample depth cm	H₂O	CaCl₂	EC dS/m	NaCl %	Ex Ca cmol-/kg	Ex Mg cmol-/kg	Ex K cmol-/kg	Ex Na cmol-/kg	Ex Al mg/kg	Ex acidity cmol-/kg	FC -30^okPa	PWP -1500^okPa	KS %	FS %	Z %	C %
A1	0–10	6.8	NA	0.17	0.02	2.7	6.9	0.6	2	NA	5.1	29.9	11.7	29	38	3	28
B21	10–25	8.6	NA	0.12	0.01	22.9	10.3	1.7	0.8	NA	3.6	NA	22.4	9	21	9	61
B22	25–60	8.9	NA	0.17	0.01	17	15.5	1.3	1.7	NA	5.3	NA	23.3	8	18	8	63
B23	60–90	9.2	NA	0.24	0.03	13.4	19.8	1.5	3.3	NA	NA	NA	25.5	7	17	9	64
B31k	90–130	9.3	NA	0.33	0.02	11.5	20.8	1.5	5.4	NA	NA	NA	26.7	8	15	9	65
B32	130–195	9.4	NA	0.44	0.02	NA	NA	NA	NA	NA	NA	NA	28.5	4	13	10	68

Note: NA=not assessed

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