Red and Yellow Soil in India

Red and Yellow soil covers about 18.5% of India's landmass, making it the second most abundant soil type after alluvial soil. It is a key topic in Class 10 Geography (Resources and Development).

Question (Click to Flip)

What is the difference between Red soil and Laterite soil?

Answer

While both are red due to iron oxide, Laterite soil is formed in areas with high temperature and extremely high rainfall (which washes away nutrients through leaching), whereas Red soil is formed in areas of low rainfall.

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Key Facts

In Tamil Nadu, Kerala, and Karnataka, specific types of red laterite soils are extremely well-suited for growing plantation crops like tea, coffee, and cashew nuts.

Why is it Red and Yellow?

Red Colour: The soil gets its reddish colour due to the widespread diffusion of iron (iron oxide) in crystalline and metamorphic rocks.
Yellow Colour: It looks yellow when it occurs in a hydrated form (meaning when it absorbs moisture/water).

Characteristics

Texture: Generally sandy to loamy.
Fertility: It is generally poor in nitrogen, phosphorus, and humus (organic matter), making it naturally less fertile than alluvial soil.
Improvement: However, it responds very well to fertilizers and irrigation, after which it can yield excellent crops.

Where is it found in India?

It develops on crystalline igneous rocks in areas of low rainfall in the eastern and southern parts of the Deccan Plateau.

States: Large parts of Odisha, Chhattisgarh, southern parts of the middle Ganga plain, Tamil Nadu, Karnataka, and parts of Maharashtra.

Crops Grown

With proper use of fertilizers and irrigation, this soil is highly suitable for growing:

Cotton, Wheat, Rice, Pulses, Millets, Tobacco, and Oilseeds.

Questions and Answers

What is the difference between Red soil and Laterite soil?+

While both are red due to iron oxide, Laterite soil is formed in areas with *high temperature and extremely high rainfall* (which washes away nutrients through leaching), whereas Red soil is formed in areas of *low rainfall*.

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