Laboratory number: | 0981 | Profile Description | |||
Site number: | 555 | All | 0 - 20 cm | Dark reddish brown (5YR 2/2) organic loam; strong crumb structure; rough-ped fabric; friable when moist; pH 5.0; clear boundary | |
Classification: | Northcote (1979) - Um6.21 Stace et al. (1972) - Alpine Humus Soil | Al2 | 20 - 30 cm | Dark reddish brown (5YR 2/2) organic loam; strong fine (5 mm) subangular blocky structure; rough-ped fabric; hard when dry; 1% basalt fragments up to 10 mm; pH 5.0; clear boundary | |
Location: | Dargo 8323, grid ref. 162908 Gow Plain 4 km SE of Dargo High Plains | AC | 30 - 40 cm | Dark reddish brown (5YR 3/2) stony loam; apedal; earthy fabric; soft when dry; 30% basalt fragments up to 60 mm, some soft black inclusions (reacting with H202) up to 5 mm; pH 5.5; clear boundary | |
Land system, component: | Nunniong, 2 | C | 40 - 88+ cm | Reddish brown (5YR 4/4) stony clay loam; abundant distinct dark reddish brown (<5 mm) mottles; apedal; friable when moist; 20% basalt fragments up to 10 mm; pH 5.5 - 6.0 | |
Topography: | 4% slope facing S on plateau, hummocky microrelief near water- course | ||||
Elevation: | 1500 m | ||||
Drainage: | Moderate | ||||
Parent material: | Tertiary basalt | ||||
Vegetation: | Grassland of predominantly Poa sp. | ||||
LABORATORY ANALYSES 981 | |||||||||||||||||||
Sample Depth cm | Lab. texture | Particle size distribution | Atterberg limits | 1:5 soil water suspension | Clay mineralogy by x-ray diffraction | ||||||||||||||
Gravel % | Coarse sand % f.e. | fine sand % f.e. | Silt % f.e. | Clay % f.e. | liquid limit % | plastic limit % | plasticity index % | linear shrinkage % | pH | EC 25°C µS/cm | Cl- % | Depth cm | Composition % | ||||||
0 - 10 20 - 30 30 - 40 40 - 60 60 - 88 | SiL SiL SiL - SiL | 2 12 39 30 34 | 5 12 17 - 16 | 28 38 32 - 27 | 37 31 34 - 30 | 24 17 17 - 24 | 65 | 39 | 26 | 14 | 5.2 5.4 5.6 - 5.9 | 56 28 23 - 16 | 0.004 0.002 0.002 - 0.002 | 20 - 30 | allophane mainly; some kaolinite | ||||
Sample Depth cm | Org. C % | Total N % | 1.3C N | Free Fe2O3 % | Available | HCl extract | Exchangeable cations | ||||||||||||
P ppm | K ppm | P % | K % | Ca | Mg | K | Na | CEC | Ca % of CEC | Mg | K | Na | H | ||||||
Milliequivalents/100g | |||||||||||||||||||
0 - 10 | 9.7 | 0.92 | 14 | 4.9 | 81 | 280 | 0.13 | 0.15 | 0.9 | 0.6 | 0.9 | 0.03 | 82.3 | 1 | 1 | 1 | <1 | 97 | |
20 - 30 | 6.2 | 0.61 | 13 | 4.4 | 95 | 100 | 0.11 | 0.12 | 0.6 | 0.3 | 0.5 | 0.01 | 78.8 | 1 | <1 | 1 | <1 | 98 | |
30 - 40 | 3.6 | 0.39 | 12 | 5.2 | 0.11 | 0.17 | 0.6 | 0.3 | 0.4 | 0.02 | 62.5 | 1 | 1 | 1 | <1 | 97 | |||
40-60 | |||||||||||||||||||
60 - 88 | 6.6 | 0.15 | 0.11 | 4.1 | 2.3 | 0.3 | 0.05 | 43.0 | 10 | 5 | 1 | <1 | 84 |