How binomial soil classification systems in South Africa is used by defining what procedure is followed when : identifying amd classifying
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Answer:
The first soil classification system specifically for South Africa was published in 1977.
It was based on many years of survey information from several sources and was called “Soil Classification - a Binomial System for South Africa”, known as the “red book”.
It uses unique combinations of topsoil and subsoil horizons (layers) to place a soil into a specific soil form.
Certain other characteristics within the soil form are then applied to define the soil series.
The full background is given in the introduction to the Binomial System.
This classification system was refined in 1991 and published as: “Soil Classification – a Taxonomic System for South Africa” (known as the “blue book”).
The 1991 system has a greater number of possibilities and is generally useid in South Africa today. The main application of the 1977 system is the national Land Type Survey at 1:250 000 scale.
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