Location: Niranda South | Australian Soil Classification: Vertic, Mottled-Subnatric, Brown SODOSOL |
Site DU56 Landscape. |
O | 0-4 cm | Organic mat: | Site DU56 profile. |
A1 | 4-12 cm | Very dark greyish brown (10YR3/2) with rusty root channel mottling; sandy clay loam (spongy); weak coarse to medium blocky structure; firm consistence (dry); pH 5.9; clear change to: | |
A2 | 12-20 cm | Light yellowish brown (10YR6/4) with dark greyish brown (10YR4/2) mottles; sandy clay loam; weak coarse blocky parting to medium blocky structure; firm consistence (dry); pH 6.6; sharp change to: | |
Subsoil | |||
B21 | 20-30 cm | Dusky red (2.5YR4/2) with 10% yellowish brown (10YR5/8) mottles; medium heavy clay; moderate to strong coarse prismatic, parting to moderate to strong coarse blocky structure; strong consistence (dry); pH 7.1; clear change to: NOTE: gilgai variability where B21 can also be LCfs, 10YR3/2. | |
B22 | 30-60 cm | Dark greyish brown (2.5Y4/2) with 30% yellowish brown (10YR5/6) mottles; light medium clay; strong consistence (dry); few (5-10%) manganese staining in patches; pH 7.4; clear change to: | |
B23 | 60-100 cm | Olive brown (2.5Y4/4) with 40% yellowish brown (10YR5/6) mottles; heavy clay; strong medium to fine lenticular structure; weak consistence (dry); pH 7.2; clear change to: | |
B24 | 100-140 cm | Yellowish brown (10YR5/6) with 40% greyish brown (2.5Y5/2) and 5% red (2.5YR5/6) mottles; medium heavy clay; strong coarse lenticular, parting to strong fine lenticular structure; weak consistence (dry); many (80%) ferruginous sub-rounded nodules (2-15 mm); pH 7.8. |
pH | Salinity Rating | ||
Surface (A1 horizon) | Slightly Acid | Low | Sodic |
Subsoil (B21 horizon) | Slightly Acid | Low | Sodic |
Deeper subsoil (at 110-140 cm) | Slightly Alkaline | Low | - |
Horizon | Horizon Depth (cm) | pH (water) | pH CaCl2 | EC 1:5 | NaCl % | Exchangeable Cations | |||
Ca | Mg | K | Na | ||||||
meq/100g | |||||||||
O | 0-4 | ||||||||
A1 | 4-12 | 5.9 | 5.3 | 0.17 | 6.7 | 1.6 | 0.54 | 0.99 | |
A2 | 12-20 | 6.6 | 5.8 | 0.09 | 5.6 | 1.3 | 0.37 | 0.65 | |
B21 | 20-30 | 7.1 | 6.5 | 0.16 | <0.01 | 6.7 | 1.9 | 0.7 | 1.4 |
B22 | 30-60 | 7.4 | 6.8 | 0.28 | 0.02 | 7.8 | 2.2 | 0.6 | 2.1 |
B23 | 60-100 | 7.2 | 6.9 | 0.45 | 0.05 | ||||
B24 | 100-140 | 7.8 | 7.3 | 0.22 | 0.02 | ||||
B25 | 140+ | 8 | 7.5 | 0.43 | 0.05 |
Horizon | Horizon Depth (cm) | Exchangeable Acidity meq/100g |
O | 0-4 | |
A1 | 4-12 | 13 |
A2 | 12-20 | 6.6 |
B21 | 20-30 | |
B22 | 30-60 | |
B23 | 60-100 | |
B24 | 100-140 | |
B25 | 140+ |