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Location: Lexton
Aust. Soil Class.: Magnesic, Mottled-Mesonatric, Brown SODOSOL (thick, sandy surface horizon)
General Site Description: Remnant low-level terrace between scald and creek, with some aeolian influence
Site Description: Grazing paddock
Geology: Quaternary alluvial sediments
CRC16 Landscape |
Surface Soil | CRC16 Profile | ||
A1 | 0-20 cm | Very dark grey (10YR3/1); light fine sandy loam; weak medium subangular blocky, parting to weak fine subangular blocky structure; very weak consistence (dry); very few (<2%) fine angular quartz fragments; rough ped faces; moderately hydrophobic; pH 6.1; clear and smooth change to: | |
A21 | 20-35 cm | Light yellowish brown (10YR6/4) conspicuously bleached (10YR7/3 dry); light fine sandy loam; massive; weak consistence (dry); earthy fabric; pH 4.9; sharp and wavy change to: | |
A22 | 35-45 cm | Pale brown (10YR6/3) conspicuously bleached (10YR8/2 dry); light fine sandy loam; massive; firm consistence (dry); very few (<2%) fine angular quartz fragments; earthy fabric; capping on prism tops; pH 5.1; sharp and wavy change to: | |
Subsoil | |||
B1 | 45-60 cm | Strong brown (7.5YR5/6) with many medium faint pale brown (10YR6/3) and brown (7.5YR4/4) mottles; light sandy clay loam; moderate very coarse columnar structure; strong consistence (dry); very few (<2%) fine subangular quartz fragments; rough-ped fabric; pH 6.3; clear and smooth change to: | |
B21 | 60-80 cm | Brown (7.5YR4/4) with many (40%) medium distinct light yellowish brown (10YR6/4) mottles; light clay (fine sandy); moderate very coarse prismatic, parting to moderate coarse angular blocky structure; strong consistence (dry); very few (<2%) fine subangular quartz fragments; rough-ped fabric; pH 6.5; clear and smooth change to: | |
B22 | 80-105 cm | Light yellowish brown (10YR6/4) with many medium distinct brown (7.5YR4/4), light brownish grey (10YR6/2) and reddish yellow (7.5YR6/6) mottles; fine sandy clay loam; weak very coarse subangular blocky structure; strong consistence (dry); rough-faced peds; many very fine macropores present; pH 6.6; gradual and smooth change to: | |
B23 | 105-135 cm | Pale brown (10YR6/3) with many (40%) medium faint strong brown (7.5YR5/6) mottles; fine sandy clay loam; weak very coarse subangular blocky structure; very firm consistence (dry); rough-faced peds; many very fine macropores present; pH 7.2; clear and smooth change to: | |
2B21 | 135-160 cm | Grey (10YR6/1) with many (30%) medium distinct brown (7.5YR5/4) mottles; medium clay; weak very coarse subangular blocky, parting to weak medium subangular blocky structure; firm consistence (moderately moist); rough-faced peds; many very fine macropores present; pH 7.6; gradual and smooth change to: | |
2B22 | 160-180 cm | Light brownish grey (10YR6/1) with many (30%) coarse distinct reddish yellow (7.5YR6/6) mottles; silty clay loam; weak medium subangular blocky structure; weak consistence (moderately moist); smooth-faced peds; pH 7.5. |
pH | Salinity Rating | |||
Surface (A1 horizon) | Slightly Acid | Very Low | Non-Sodic | None |
Subsoil (B21 horizon) | Slightly Acid | Very Low | Strongly Sodic | Strong-Complete |
Deeper subsoil (at 160-180 cm) | Slightly Alkaline | Low-Medium | Strongly Sodic | Strong |
Horizon | Horizon Depth | pH (water) | pH CaCl2 | EC dS/m | NaCl % | Exchangeable Cations | 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) | |||
Ca | Mg | K | Na | ||||||||||||||
meq/100g | |||||||||||||||||
A1 | 0-20 | 6.4 | 5.3 | 0.09 | 4.2 | 0.57 | 0.30 | 0.25 | <10 | 8.7 | 18.0 | 6.5 | 14 | 67 | 12 | 2 | |
A21 | 20-35 | 4.9 | 4.2 | 0.09 | 0.30 | 0.20 | 0.09 | 0.32 | 69 | 4.3 | 21.5 | 1.9 | 13 | 70 | 12 | 3 | |
A22 | 35-45 | 5.1 | 4.3 | 0.06 | 0.11 | 0.12 | 0.05 | 0.23 | 43 | 1.9 | 19.0 | 5.3 | 12 | 71 | 13 | 3 | |
B1 | 45-60 | 6.3 | 4.9 | 0.13 | 0.19 | 1.9 | 0.11 | 1.1 | 13 | 2.7 | 16.0 | 5.7 | 9 | 57 | 18 | 15 | |
B21 | 60-80 | 6.5 | 4.9 | 0.23 | 0.33 | 7.0 | 0.26 | 3.4 | 13 | 6.3 | 28.5 | 1.9 | 4 | 39 | 17 | 38 | |
B22 | 80-105 | 6.6 | 5.3 | 0.22 | 0.13 | 5.2 | 0.17 | 3.1 | <10 | 3.7 | 24.0 | 9.8 | 3 | 58 | 16 | 22 | |
B23 | 105-135 | 7.2 | 6.0 | 0.25 | 0.18 | 5.1 | 0.17 | 3.3 | 2.4 | 2 | 65 | 15 | 18 | ||||
2B21 | 135-160 | 7.6 | 6.4 | 0.26 | 0.04 | 0.3 | 7.2 | 0.2 | 3.4 | 1 | 42 | 26 | 29 | ||||
2B22 | 160-180 | 7.5 | 6.4 | 0.31 | 0.05 | 0.2 | 4.9 | 0.2 | 2.5 | 1 | 39 | 39 | 19 |