Which of the following statements regarding laterite soils of India are correct?
- They are generally red in colour.
- They are rich in nitrogen and potash.
- They are well-developed in Rajasthan and UP.
- Tapioca and cashew nuts grow well on these soils.
Select the correct answer using the codes given below.
Smart Elimination
Understand that majority of soils in India is not nutrient rich, that is why we depend heavily on fertilizers and have a huge portion of budget dedicated to it every year. If you take this context to be true then statement 2 is wrong.
Statement 3 says that the laterite soil is well developed in Rajasthan (dry and arid) and UP (Ganga river - Alluvial Plains), so both don't add to the context of laterite soil.
Potential Trap
Associating 'Red' colour only with Red Soil. Laterite is also red. Thinking it's fertile (Statement 2).
Answer Key & Explanation
Answer: CThe correct answer is Option C.
Analysis:
- Red Colour: Yes, due to the presence of Iron Oxide. (Correct)
- Rich in N and K: No. Laterite soils are formed by intense leaching in high rainfall areas. This washes away lime, silica, Nitrogen, Potash, and organic matter. They are poor in nutrients. (Incorrect)
- Rajasthan and UP: No. These states have dry/alluvial climates. Laterite soils are found in high rainfall/temperature areas like Western Ghats, Meghalaya, and parts of Odisha. (Incorrect)
- Crops: They are suitable for plantation crops like Cashew, Tapioca, Coffee, and Rubber (with manure). (Correct)
Value Addition
- Brick: The word Laterite comes from Latin 'Later' meaning brick. It hardens when exposed to air.
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Foundational question based on core concepts.