Question

Which of the following statements are correct?

1. Black soils are rich in nitrogen and organic matter.

2. Black soils are formed due to weathering of igneous rocks.

3. Black soils are unsuitable for cotton cultivation.

• A. 1 & 2
• B. 2 only
• C. 2 & 3
• D. All are correct

Answer 1

Answer:

B. 2 only

• Correct Answer: Option B) 2 only

• Black soils (also known as regur soils or cotton soils) have the following characteristics:

• Statement 1 is incorrect: Black soils are NOT rich in nitrogen and organic matter. In fact, they are generally poor in nitrogen, phosphorus, and organic content. They are, however, rich in bases such as calcium, magnesium, and potassium.

• Statement 2 is correct: Black soils are indeed formed due to the weathering of igneous rocks, particularly basaltic lava. The Deccan Trap region in India, which is composed of basaltic lava, is where these soils are predominantly found.

• Statement 3 is incorrect: Black soils are actually highly suitable for cotton cultivation, which is why they are often called cotton soils. They have high moisture retention capacity and are rich in calcium carbonate, magnesium carbonate, and potash, making them ideal for cotton, sugarcane, jowar, wheat, linseed, and tobacco cultivation.