4. Laterite soils (Oxisols)
- Laterite soils are mostly the end products of weathering, formed under high temperatures and high rainfall with alternate wet and dry periods.
- Laterite soils are red in color due to little clay and more gravel of red sand-stones.
- Lime and Silica are leached away in heavy rainfall, but the soil is rich in oxides of Iron and Aluminium compounds.
- They are very poor in lime, Magnesium, Potash and Nitrogen.
- Sometimes, the Phosphate content may be high in the form of Iron Phosphate.
- Laterite soils lack fertility due to intensive leaching.
- When manured and irrigated, some laterites are suitable for growing plantation crops like Tea, Coffee, Rubber, Cinchona, Coconut, Arecanut, etc.