How is red soil formed ? Mention its three characteristics. -SST 10th

How is red soil formed ? Mention its three characteristics. -SST 10th
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Formation : Most of the red soils have come into existence due to weathering of ancient crystalline igneous rocks. Characteristics / Features : (i) Soils are loamy in deep depressions and in uplands. They consist of loose gravels and highly coarse materials. (ii) The colour of these soils is generally red, often grading into brown, chocolate or yellow. The red colour is due to wide diffusion rather than high percentage of iron content. It looks yellow when it occurs in a hydrated form. (iii) Soils are deficient in phosphoric acid, organic matter and nitrogenous materials but are fairly rich in potash. But crops are cultivated with the use of fertilizers.
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