Geographical distribution and mineral profile
- Geographical spread: Covers large tracts across Tamil Nadu, Karnataka, Andhra Pradesh, Telangana, Odisha, and parts of Madhya Pradesh and Jharkhand.
- Parent rock: Derived from ancient granites, gneisses, and crystalline rocks in low-rainfall plateau zones.
- Chemical composition: Rich in iron and potash, but inherently deficient in nitrogen, phosphorus, humus, and lime.
- Texture: Ranges from porous sandy loams on uplands to fertile, deeper clayey loams in river valleys and depressions.
Crop suitability and agronomic performance
- Oilseeds and pulses: Highly suited for groundnut, red gram (arhar), black gram, green gram, and castor.
- Cereals and millets: Ideal for finger millet (ragi), pearl millet (bajra), sorghum (jowar), and maize under rainfed conditions.
- Horticulture and cash crops: Responds exceptionally well to irrigation for growing cotton, tobacco, tomato, mango, and mulberry for sericulture.
Fertility management and soil conservation
- Organic amendments: Incorporate farmyard manure (FYM), vermicompost, and green manures to enhance organic carbon and water-holding capacity.
- Balanced fertilization: Apply phosphatic and nitrogenous fertilizers based on Soil Health Card lab reports to correct native deficiencies.
- Moisture management: Adopt contour bunding, mulching, and micro-irrigation to maximize crop water availability in porous topsoil.
Official source
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Soil Health Card Portal (Govt of India) ↗Related on KisanPe
Common questions
Why is red soil red in color?
The reddish color is due to the wide diffusion of iron (ferric oxides) in crystalline and metamorphic parent rocks.
Which states have large areas of red soil in India?
Tamil Nadu, Karnataka, Andhra Pradesh, Telangana, Odisha, and Jharkhand contain extensive red soil tracts.
Which major crops grow well in red soil?
Groundnut, ragi (finger millet), pulses, cotton, tobacco, maize, and horticultural fruit crops.
What nutrients are deficient in red soil?
Red soils are generally deficient in nitrogen, phosphorus, organic humus, and calcium lime.
General guidance, not personal advice. For your farm, ask your local Krishi Vigyan Kendra or agriculture officer.
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