1. is fine-grained soil of volcanic origin
2. has high water retaining capacity
3. is suitable for cash crops such as cotton and sugarcane
4. is black because of presence of Phosphorus
Which among the above is / are correct?
The regur soil or black soil is rich in iron, lime, calcium, potash, aluminium and magnesium but deficient in nitrogen, phosphorous and organic matter. It has high water retaining capacity, extremely compact when wet and readily develops cracks when dry. This soil is highly productive and suitable for various crops such as cotton, sugarcane, pulses, millets, linseed, castor, tobacco etc.
This question is a part of GKToday's Integrated IAS General Studies Module