CFTT3

Soil Profile Morphology:

Surface Soil

A1	0 – 20 cm	Dark greyish brown (10YR4/2); clay loam; moderate medium polyhedral structure; very weak consistence moist; pH 4.8; gradual and smooth transition to:
Subsoil
B21	20 - 40 cm	Brown (10YR5/3); clay loam; moderate coarse polyhedral structure; weak consistence moist; pH 4.9; diffuse and smooth transition to:
B22	40 – 80 cm	Greyish brown (10YR5/2), with few, fine, faint yellowish brown (10YR5/6) mottles; light clay; weak coarse polyhedral structure; weak consistence moist; pH 4.8; diffuse and smooth transition to:
B23	80 – 120 cm	Grey (10YR5/1), with common, medium, distinct yellowish brown (10YR5/4) mottles, medium clay; weak coarse polyhedral structure; firm consistence moist; pH 4.7; gradual transition to:
B24	120 – 160 cm	Grey (10YR5/1), with many, medium, distinct yellowish brown (10YR5/4 and 10YR5/6) mottles; medium clay; weak very coarse to coarse polyhedral structure; firm consistence moist; pH 4.7.

Key Profile Features:

• Lack of strong texture contrast between surface (A) horizon and subsoil (B) horizons.

	pH	Salinity Rating	Sodicity	Dispersion
Surface (A1 horizon)	Very strongly acid	Very low	Non-sodic	none
Subsoil (B21 horizon)	Very strongly acid	Very low	Non-sodic	none
Deeper subsoil (at 1.2 m)	Very strongly acid	Very low	Non-sodic	none

The soil profile is very strongly acid throughout

The salinity rating is very low throughout the profile.

The level of exchangeable aluminium is high throughout most of the strongly acid soil profile (apart from the upper subsoil).

The clay percentage increases gradually with depth down the soil profile.

Horizon	Horizon Depth	pH (water)	pH CaCl2	EC 1:5	NaCl	Exchangeable Cations
						Ca	Mg	K	Na
						Meq/100g
A1	0-20	4.8	4.2	0.09		2.4	1.7	0.55	0.19
B21	20-45	4.9	4.2	0.07		1.6	1.4	0.38	0.17
B22	45-80	4.8	4.1	0.09		1.7	2.2	0.5	0.19
B23	80-120	4.7	4	0.09		2	4.8	0.54	0.27
B24	120-160	4.7	3.9	0.09		2.1	5.1	0.61	0.28

• Levels of exchangeable Potassium (K) relative to the other basic cations (ie. Na, Ca, Mg) are quite high (although not as high as for site CFTT1).
• The high levels of exchangeable aluminium in much of the very strongly acid soil profile may restrict the growth of aluminium sensitive species.
• The very strongly acid soil profile indicates that some trace elements (eg. copper, molybdenum) may be poorly available to plants.
• The clayey surface soil is liable to compaction from heavy trafficking or overstocking when in a moist to wet condition.
• The upper metre of the soil profile has a weak consistence when moist – indicating that root movement should not be significantly restricted.