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Alluvial
(Entisols) |
These soils are transported and found in the deltaic or in coastal areas. Sandy coastal alluvium soils occur along the sea coast as a narrow belt in the districts of Kancheepuram, Cuddalore, Thanjavur, Ramnad, Tnv., Tuticorin & KKI distts. while the river alluvium soils are transported soils found on river banks and indeltaic areas in districts of kancheepuram, Cuddalore, Tiruchi, Thanjavur, Tnv. & Ramnad. Major portionof Cauvery alluvium lies in Thanjavur distt. |
River alluvium- 21 lakh ha
(16.2%)- The soils are
characterized by alternate
layers of fine and coarse
sand. Coastal alluvium- 9.8 ha (7.6%)- (they are formed by the rivers and are overlain with sand blown from sea beaches)
As these soils occur on
mostly flat lands with 0-1 % slope, erosion is min. |
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Red
(Inceptisols,
Alfisols) |
Kancheepuram, Vellore, TV Malai, Cuddalore, Villupuram, Salem &
parts of Tiruchi distt. Red sterile- Tiruchi, Pudukottai, Madurai &
Ramanathapuram distts. Red sandy- Madurai, Ramanathapuram &
Tnv. Distts. Deep red- KKI., Tnv.,
Ramnad, Mdu distts. Shallow red- Cbe. & Mdu distts. |
Soils are cultivated
with a wide variety
of crops incl.
groundnut,
sorghum, maize,
cumbu, pulses,
banana, coconut,
sugarcane (Not
suitable for rice as
water will percolate) |
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