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1. Coastal alluvium soils occur on gently sloping to nearly level plains as a narrow strip along the western coast in the districts of Uttara Kannada, Udupi and Mangalore.
2. They are deposited soils consisting of washed down materials from the western ghats and by the action of the Arabian sea.
3. These are deep to very deep, light grey, pale yellow or brown, sand loamy sand to sandy loam on the surface, with loamy sand, gravelly sandy loam to clay loam in the subsurface horizons.
4. These are acidic in reaction, low in CEC base saturation and water holding capacity and deficient in the major nutrients.
5. The water table in the low lying areas in usually within 1.0 to 1.5 metres for most parts of the year. These soils are classified under order Entisols with sub-orders Aquents, Fluvents and Psamments.
6. The soils are saline due to low lying and inundation by the sea water. Adoption of package of practices with salt resistant varieties of crops is recommended.