Property: LP50 Mitiamo | Group: Pine Grove Farm Advance |
Australian Soil Classification: Epicalcareous-Endohypersodic, Epipedal, Red VERTOSOL, intermixed with a Black VERTOSOL | Northcote Factual Key: Ug 5.3 |
Great Soil Group: brown clay | |
General Landscape Description: Edge of an old alluvial plain (treeless) near Mount Terrick Terrick. This site occurs in a slight depression. Gilgai microrelief existed prior to clearing. |
LP50 Landscape |
A1 | 0-10 cm | Dark reddish brown (5YR3/3); light medium clay; surface flake; moderate fine to medium polyhedral structure; very firm consistence dry, friable moist; pH 8.3; sharp change to: | LP50 profile |
Subsoil | |||
B21 | 10-35 cm | Yellowish red (5YR5/6); medium clay; cracking occurs to the base of this horizon; weak coarse blocky structure; strong consistence dry; pH 8.5; gradual and wavy change to: | |
B22k | 35-100 cm | Reddish brown (5YR4/4); medium heavy clay; moderate prismatic, parting to coarse blocky structure (with smooth-faced peds); very strong consistence dry; fine-earth carbonate common (10-15 %); pH 9.3; gradual change to: | |
B23 | 100 cm+ | Yellowish red (5YR5/6); heavy clay; moderate coarse blocky structure; strong consistence moist; pH 9.5. | |
NOTE: The subsoil (B21 horizon) colour varies at this site. It can also be greyish brown (10YR3/2) and extend to a depth of about 80 cm. |
pH | Salinity Rating | |||
Surface (A1 horizon) | moderately alkaline | very low | non-sodic | none |
Subsoil (B21 horizon) | moderately alkaline | very low | non-sodic | none |
Deeper subsoil (at 1 m) | extremely alkaline | low-medium | strongly sodic | moderate |
Horizon | Horizon Depth | pH (water) | EC 1:5 | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||
meq/100g | ||||||||
A1 | 0-10 | 8.3 | 0.15 | 28 | 3.9 | 2.2 | 0.2 | |
B21 | 10-35 | 8.5 | 0.12 | 24 | 7.4 | 1.2 | 0.9 | |
B22k | 35-100 | 9.3 | 0.29 | <0.05 | 14 | 15 | 0.9 | 4.1 |
B23 | 100+ | 9.5 | 0.78 | 0.09 | 6.2 | 18 | 1.3 | 10 |
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 | 33.5 | 25.4 | 7 | 22 | 10 | 52 | ||
B21 | 10-35 | 42.3 | 32.2 | 7 | 17 | 7 | 61 | ||
B22k | 35-100 | 49.1 | 37 | 5 | 12 | 6 | 57 | ||
B23 | 100+ |
Horizon | Horizon Depth | pH (water) | EC dS/m | NaCl | Exchangeable Cations | |||
Ca | Mg | K | Na | |||||
Meq/100g | ||||||||
B21 | 10-40 | 8.6 | 0.12 | 26 | 5.9 | 1 | 0.7 | |
B22 | 40-80 | 9.2 | 0.3 | <0.05 | 18 | 10 | 0.8 | 5.1 |
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) |
B21 | 10-40 | 40.5 | 30.7 | ||||||
B22 | 40-80 |