WLRA134

Canola stubble on undulating plains		Site Code	WLRA134	Gypsic, Self-mulching, Grey Vertosol
		Location	Cnr Henty Highway and Minyip Dimboola Road, Kewell North, western Victoria
		Landform	Undulating plain
		Geology	Quaternary Woorinen Formation: aeolian dune sand, calcareous clay
		Element	Plain
		Slope	1.5%
		Aspect	East
Horizon	Depth (cm)	Description
A11	0–4	Dark grey (10YR4/1); light medium clay; strong fine granular structure; rough-ped fabric; loose dry consistence; pH 7.0; abrupt and irregular boundary to:
A12	4–18	Dark grey (10YR4/1); medium heavy clay; strong coarse platy parting, to coarse angular blocky structure; rough-ped fabric; firm dry consistence; common very fine roots; pH 6.5; gradual and irregular boundary to:
B21	18–40	Dark grey (10YR4/1); heavy clay; strong medium prismatic parting, to coarse angular blocky structure; rough-ped fabric; strong dry consistence; common very fine roots; pH 8.75; clear and irregular boundary to:
B22	40–60	Dark grey (10YR4/1); light clay; strong medium prismatic parting, to coarse angular blocky structure; rough and smooth–ped fabric; strong dry consistence; few coarse calcareous soft segregations; many faint slickensides; common very fine roots; pH 9.0; clear and irregular boundary to:
B23k	60–77	Greyish brown (10YR5/2); light medium clay; strong medium prismatic, parting to coarse angular blocky structure; rough–ped fabric; firm moderately moist consistence; many coarse calcareous soft segregations; many faint slickensides; few very fine roots; pH 9.0; clear and irregular boundary to:
B24	77–145+	Pale brown (10YR6/3); light medium clay; strong very coarse lenticular, parting to coarse polyhedral structure; smooth-ped fabric; firm moderately moist consistence; very many gypseous veins; many faint slickensides; no roots (except in biopores); pH 8.5.
Management considerations
Cracking clay soil Friable (self mulching) surface Alkaline subsoil with gypseous veins at depth Subsoil calcareous and strongly sodic Boron levels higher in subsoil, more significant at depth

Site WLRA134	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 %
A11	0–4	7.3	6.9	0.26	0.08	25	6.2	3	0.7	2.9	NR	32.5	21.8	16	10.8	15.3	52.8
A12	4–18	7.5	6.9	0.43	0.13	25	9.2	1.5	3.1	5.6	NR	40.9	27.1	17.9	11.7	15.5	51
B21	18–40	8.8	8.1	0.67	0.2	21	10	1.2	8.8	9.4	130	49.6	24.9	17.8	12.1	15	51.5
B22	40–60	8.9	8.3	1.2	0.36	16	10	1.3	12	20	190	50.3	23	18.1	12.1	18	50.5
B23k	60–80	8.8	8.4	1.7	0.51	13	9.7	1.4	13	27	370	51.4	25	17.4	12	12	52
B24	80–100	8.1	8	3.9	1.2	16	9.6	1.3	14	26	920	46.2	23.1	21.1	10.3	11.5	50
B24	100–120	8.4	8.1	2.7	0.81	15	10	1.4	16	25	900	50.3	25.5	18.8	10	11	54.5

Note: NA=not assessed

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