Once they have been identified and mapped, the ecotope codes should be presented on an ecotope map. Ecotope codes Symbols: G - Grey B - Brown R - Red a - Apedal st - Structured r - Rocky S - steel (12 - 40%) x - Very steep (>40%) Soil profiles Some...
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SOIL SCIENCE (OLD)
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Crop ecotope classification system
An ecotope is an area of land within which the variation in natural resources is limited to the degree that the production and palatability will be uniform, and will differ from adjoining ecotopes. Crop ecotopes should be defined. Where for instance a Hutton,...
Soil survey interpretation
To identify soils accurately, it is necessary to undertake a soil survey, according to particular standard procedures. The aim is to provide an accurate record of the soil resources of land on a farm. With the soil boundaries drawn on a base map, the map is used to...
A general assessment of some selected soil forms
South Africa has 73 different soil form that has been derived from 30 soil horizons. Below are the soil ranking laid in a decreasing potential and increasing hazards. Humic Soils Inkstand Ia Humic/red apedal B Krasnoyarsk...
Subsoil horizons
a) Well-drained sub-soils Red apedal B horizon This horizon has a red colour and weak, cheese-like structure and underlies a topsoil horizon or a yellow-brown apedal B horizon. It is suitable for intensive utilisation. Yellow-brown apedal B horizon This horizon...