VIT6

Location: Upton	Australian Soil Classification: Reticulate, Magnesic, Yellow CHROMOSOL
General Landscape Description: Low slope and rises

VIT6 Landscape

VIT6 Landscape

Soil Profile Morphology

Surface Soil

A1	0-13 cm	Very dark greyish brown (10YR3/2); loam; weak strong blocky structure; moderate fine to very fine granular structure near surface; weak to firm consistence (dry); few (5%) medium (2-5 mm) quartz fragments; pH 5.9; clear change to:	VIT 6 Profile
A21	13-25 cm	Yellowish brown (10YR5/4); conspicuously bleached (10YR7/2 dry); sandy clay loam; apedal; firm consistence (moist); few (5%) medium (2-8 mm) subangular quartz fragments; fine to medium macropores common; pH 5.8; clear change to:
A22	25-45 cm	Light yellowish brown (10YR6/4); conspicuously bleached; heavy sandy clay loam; apedal; weak to firm consistence (moist); few (5%) medium (2-6 mm) subangular quartz fragments; fine to medium macropores common; pH 5.7; abrupt change to:
Subsoil
B21	45-65 cm	Brownish yellow (10YR6/6); medium clay; moderate medium subangular blocky, parting to strong fine subangular blocky structure; weak to firm consistence (moist); few (2%) ferruginous and clay nodules; few (5%) quartz fragments; pH 5.6; clear change to:
B22	65-90 cm	Brownish yellow (10YR6/6) with many (20%) faint strong brown (7.5YR5/6) mottles; light medium clay; strong coarse subangular blocky, parting to strong medium to fine polyhedral structure; firm consistence (moist); few (5-10%) medium sized (5-15 mm) ferruginous and clay nodules; quartz fragments; pH 4.9; clear change to:
B3	90-120 cm	Light grey (5R7/1) with many (50%) dark red (2.5YR4/6) and strong brown (7.5YR5/6) mottles (“tiger mottling”); clay loam (gritty); strong medium to fine subangular blocky structure; firm to very firm consistence (moist); few (5%) medium (4-8 mm) ferruginous and clay nodules; medium (4-8 mm) quartz fragments common 10-15%); pH 4.8; gradual change to:

Key Profile Features

Strong texture contrast between surface (A) horizons and upper subsoil (B21) horizon.
Reticulate mottling (“tiger mottles”) in deep subsoil.

Key Profile Characteristics

	pH	Salinity Rating	Sodicity	Dispersion
Surface (A1 horizon)	Moderately Acid	Very Low	Non-Sodic	None
Subsoil (B21 horizon)	Moderately Acid	Very Low	Non-Sodic	None
Deeper subsoil (at 90-120 cm)	Very Strongly Acid	Very Low	Non-Sodic	None


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Horizon	Horizon Depth	pH (water)	pH CaCl₂	EC 1:5	Exchangeable Cations
					Ca	Mg	K	Na
					meq/100g
A1	0-10	5.9	4.9	0.06	2.6	1.0	0.47	0.24
A21	10-25	5.8	4.8	<0.05	0.56	0.26	0.14	0.10
A22	25-45	5.7	4.7	<0.05	0.53	0.25	0.11	0.11
B21	45-65	5.6	4.5	0.06	1.7	2.0	0.26	0.43
B22	65-90	4.9	4.5	0.17	0.15	4.7	0.67	0.78
B3	90-120	4.8	4.3	0.10	<0.05	2.5	0.36	0.44

Horizon	Horizon Depth	Ex Al mg/kg	Ex Ac meq/100g	Field pF2.5	Wilting Point pF4.2	Coarse Sand (0.2-2.0mm)	Fine Sand (0.02-0.2mm)	Silt (0.002-0.02mm)	Clay (<0.002mm)


A1	0-10	26	9.2	57.7	7.0	46	25	15	9
A21	10-25	38	3.2	14.8	2.9	46	31	10	8
A22	25-45	43	3.1	13.8	3.7	46	29	12	8
B21	45-65	120	7.2	27.2	14.9	25	16	10	48
B22	65-90	210	11	36.6	22.8	10	14	12	63
B3	90-120	410	6.7	32.6	17.9	19	17	12	50

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