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Assertion (A): Black soils are suitable for cotton cultivation
Reason (R): They are rich in humus.
Select the correct answer from the codes given below :
  • a)
    Both (A) and (R) are true, and (R) is the correct explanation of (A).
  • b)
    (A) is true, but (R) is false.
  • c)
    (A) is false, but (R) is true.
  • d)
    Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Assertion (A): Black soils are suitable for cotton cultivationReason ...
Black soil rich in iron oxide, alumina but very low in humus, phosphates and nitrogen. Also named as regur and best soil for cotton cultivation.
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Most Upvoted Answer
Assertion (A): Black soils are suitable for cotton cultivationReason ...
Assertion (A): Black soils are suitable for cotton cultivation
Reason (R): They are rich in humus.

Explanation:
• Black soil is also known as regur soil or black cotton soil.
• It is found mainly in the Deccan Plateau covering parts of Maharashtra, Gujarat, Madhya Pradesh, Karnataka, Andhra Pradesh, and Tamil Nadu.
• Black soil is formed due to the weathering of volcanic rocks, and it is rich in minerals like calcium, magnesium, and potassium.
• The soil is also rich in humus, which is an organic component that is formed from decaying plant and animal matter.
• Humus helps in retaining moisture and nutrients in the soil, which is essential for plant growth.
• Cotton is a major crop grown in black soil, as it requires a soil that is rich in nutrients and can retain moisture.
• The fibres of the cotton plant are used to make textiles, and India is one of the largest producers of cotton in the world.

Now coming to the Assertion (A) and Reason (R) given in the question:
• Assertion (A) states that black soils are suitable for cotton cultivation, which is true.
• Reason (R) states that black soils are rich in humus, which is also true.
• However, the reason given in (R) is not the correct explanation of (A), as there are other factors like nutrient content and moisture retention that also make black soil suitable for cotton cultivation.
• Therefore, the correct answer is option 'B' - (A) is true, but (R) is false.

In conclusion, black soil is suitable for cotton cultivation due to its nutrient content, moisture retention capacity, and the presence of humus, which helps in the growth of the cotton plant.
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Community Answer
Assertion (A): Black soils are suitable for cotton cultivationReason ...
Black or soli are suitable for cotton cultivation

a is true r is false
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Assertion (A): Black soils are suitable for cotton cultivationReason (R): They are rich in humus.Select the correct answer from the codes given below :a) Both (A) and (R) are true, and (R) is the correct explanation of (A).b) (A) is true, but (R) is false.c) (A) is false, but (R) is true.d) Both (A) and (R) are true, but (R) is not the correct explanation of (A).Correct answer is option 'B'. Can you explain this answer?
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Assertion (A): Black soils are suitable for cotton cultivationReason (R): They are rich in humus.Select the correct answer from the codes given below :a) Both (A) and (R) are true, and (R) is the correct explanation of (A).b) (A) is true, but (R) is false.c) (A) is false, but (R) is true.d) Both (A) and (R) are true, but (R) is not the correct explanation of (A).Correct answer is option 'B'. Can you explain this answer? for UPSC 2025 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about Assertion (A): Black soils are suitable for cotton cultivationReason (R): They are rich in humus.Select the correct answer from the codes given below :a) Both (A) and (R) are true, and (R) is the correct explanation of (A).b) (A) is true, but (R) is false.c) (A) is false, but (R) is true.d) Both (A) and (R) are true, but (R) is not the correct explanation of (A).Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for UPSC 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Assertion (A): Black soils are suitable for cotton cultivationReason (R): They are rich in humus.Select the correct answer from the codes given below :a) Both (A) and (R) are true, and (R) is the correct explanation of (A).b) (A) is true, but (R) is false.c) (A) is false, but (R) is true.d) Both (A) and (R) are true, but (R) is not the correct explanation of (A).Correct answer is option 'B'. Can you explain this answer?.
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