Discuss in brief about the Red soils

Red soils are characterised  by a rusty red colour due in most cases to the presence of various oxides of iron.  They are either formed  in situ or from the products of decomposition of rocks washed to a lower level. They include soils locally known as red loam, red sandy soil and red  alluvium.  Their main features are a light texture, porous structure, absence of lime, and low soluble salts. They are generally poor in
fertility constituents such as nitrogen, phosphorus, potash and lime, and are highly deficient in organic matter.  They are neutral in reaction, pH ranging from 7.0 to 7.5.  The dominant clay mineral in these soils is kaolinite.