ALRA064

Jallukar Forest		Site Code	ALRA064
		Location	Jallukar Forest, Jallukar
		Landform	Gentle plain
		Geology	White Hills Gravel: sediments
		Element	Footslope
		Slope	3%
		Aspect	South-west
		Description
Horizon	Depth (cm)	Description
A1	0–10	Greyish brown (10YR5/2); sandy loam; massive (structureless); very weak consistence when moderately moist; few medium sized quartz coarse fragments; pH 6.0; clear boundary to:		Vertilc, Mottled-Subnatric, Brown SODOSOL
A2	10–25	Light yellowish brown (2.5Y6/3); conspicuously bleached (10YR8/1 dry); sand; massive (structureless); very weak consistence when dry; pH 6.5; abrupt boundary to:
B21	25–55	Brown (10YR5/3) with many medium distinct dark yellowish brown (10YR4/6) mottles; medium heavy clay; moderate coarse columnar, parting to moderate medium prismatic structure; smooth ped-fabric; strong consistence when moderately moist; pH 7.0; gradual boundary to:
B22	55–85	Brownish yellow (10YR6/6) with few fine faint orange mottles; medium heavy clay; moderate coarse prismatic structure; smooth fabric; very firm consistence when moderately moist; very few subangular quartz coarse fragments; very few fine manganiferous nodules; few distinct mangans and slickensides; pH 7.0; distinct boundary to:
B23	85–100+	Olive yellow (2.5Y6/6) with few fine faint orange mottles; medium heavy clay; weak coarse polyhedral structure; smooth ped-fabric; very firm consistence when moderately moist; very few subangular quartz coarse fragments; common distinct slickensides; pH 7.0.
Management Considerations:
Surface soil is strongly acidic becoming slightly alkaline with depth Strong texture contrast profile, with cemented capping on top of subsoil Surface soil susceptible to sheet erosion due to apedal nature of topsoil, high sand content and likely low organic carbon levels Roots are common to B21 horizon but few beneath that due to extremely dense (71.5% clay) and sodic nature Sodic subsoil liable to dispersion, very highly dispersive, low nutrient potential and higher salinity than A1 and A2 horizons Presence of mottles and pale clayey subsoils indicates restricted drainage

Chemical Analysis:

Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	Exchangeable Cations cmol-/kg				Field Capacity (pF2.5)	Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
Horizon	Depth (cm)	pH (water)	pH (CaCl₂)	EC dS/m	NaCl %	Ca	Mg	K	Na	Field Capacity (pF2.5)	Wilting Point (pF4.2)	Coarse Sand %	Fine Sand %	Silt %	Clay %
A1	0–10	5.4	4.9	<0.05		1.4	0.41	0.28	0.11	9.5	2.7	29.8	53.0	9.0	3.0
A2	10–25	6.3	6.0	0.05		0.44	0.36	0.1	0.18	7.3	1.3	29.8	54.2	12.0	2.0
B21	25-55	6.9	6.4	0.56		1.5	7.4	0.4	1.9	28.7	22.6	6.2	13.7	6.0	71.5
B22	55-85	7.4	6.8	0.58		0.7	8.9	0.4	3.9	27.1	16.4	11.8	23.9	7.5	53.5
B23	85--100+	7.5	6.9	0.62	0.14	0.7	8.9	0.3	4.3	10.5	15.2	13.2	23.0	13.5	49.0

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