WLRA125

Cropped undulating plains		Site Code	WLRA125	Hypercalcic, Mesonatric, Red SODOSOL
		Location	Borung Highway, Areegra, western Victoria
		Landform	Plain
		Geology	Quaternary Woorinen Formation: aeolian dune sand, calcareous clay
		Element	Upper slope
		Slope	1%
		Aspect	North-north-east


Horizon	Depth (cm)	Description
Ap	0–8	Very dark greyish brown (10YR3/2); sandy clay loam; weak medium to fine subangular blocky structure; rough ped-fabric; weak consistence when dry; many fine to very fine roots; pH 7.0; smooth and sharp boundary to:
A2	8–15	Very dark greyish brown (10YR3/2), sporadically bleached (7.5YR5/3 dry); heavy sandy clay loam; massive structure; earthy ped fabric; strong consistence when dry; fine roots common; many fine and medium pores; pH 6.5; wavy and sharp boundary to:
B21	15–45	Reddish brown (5YR4/4); medium heavy clay; strong very coarse to coarse prismatic, parting to medium to coarse angular blocky structure; smooth ped fabric; very firm consistence when dry; very few (<2 mm) mangans; common distinct slickenside cutans; fine roots common; pH 8.5; wavy and clear boundary to:
B22k	45–80	Yellowish red (5YR4/6); light medium clay; moderate medium prismatic, parting to medium to fine polyhedral structure; smooth ped fabric; very firm consistence when moderately moist; many soft calcareous segregations (6–60 mm); moderately calcareous; few fine roots; pH 9.5; wavy distinct boundary to:
B3	80–105	Yellowish red (5YR5/6) with very few medium to coarse (2.5YR4/6, 5YR4/4) distinct mottles; medium clay (sandy); weak coarse polyhedral structure; rough ped fabric; firm consistence when moderately moist; very few calcareous nodules (<2 mm); moderately calcareous; very few fine roots; pH 9.5; smooth clear boundary to:
D	105–135	Reddish yellowish (7.5YR6/6) with a few fine faint red mottles; medium clay; massive structure; earthy fabric; firm consistence when moderately moist; few medium soft calcareous segregations and other coarse tubules; very highly calcareous; pH 9.5.
Management Considerations
Moderate susceptibility to wind erosion Clay subsoil tends to be subplastic Alkaline subsoils with calcareous nodules and soft segregations Subsoil constraint >80 cm as mottling indicating imperfect drainage Possible plough pan (8-15 cm) Weakly structured surface, vulnerable to wind erosion without stubble and trash retention Rooting depth observed to 105 cm Moderate susceptibility to soil structure decline due to slaking and some dispersion

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Exchangeable Cations cmol-/kg				Coarse Sand %	Fine Sand %	Silt %	Clay %
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	Ca	Mg	K	Na	Coarse Sand %	Fine Sand %	Silt %	Clay %
Ap	0–8	6.7	6.4	0.23	12	2.5	2.1	0.17	39.9	25.8	7.5	22
A2	8–15	6.5	6	0.18	8.6	2.6	0.97	0.47
B21	15–45	8.6	7.7	0.26	11	10	1.1	4.6	34.6	11.7	13	38
B22k	45–80	9.6	9.1	0.66	5.5	14	1.5	8.2	32.8	11.6	13	39.5
B3	80–105	9.7	9.2	0.78	3.5	8.4	1.3	7.5	50	11.9	13	21.5
D	105–135	9.6	8.8	1.3	5.7	12	1.7	10	20.5	12.6	6	42.5

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