Question

Given below are two statements, one is labeled as Assertion (A), and other one labeled as Reason (R).
Assertion (A): The break of monsoon at critical stages for soil moisture stress leads to a reduction in yield.
Reason (R): Only when the break of monsoon exceeds 15 days duration or more.
In light of the above statements, choose the most appropriate answer from the options given below.

• A. Both (A) and (R) are correct and (R) is the correct explanation of (A).
• B. Both (A) and (R) are correct but (R) is NOT the correct explanation of (A).
• C. (A) is correct but (R) is not correct.
• D. (A) is not correct but (R) is correct.

Hint:

Critical crop stages (such as crown root initiation in wheat or silking in maize) are highly sensitive to water stress. Even short-duration dry spells during these periods can reduce yields.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Rainfed crops rely on consistent monsoon rainfall. Dry spells or "breaks" in the monsoon during critical growth periods can cause moisture stress that reduces yields.

Step 2: Detailed Explanation:
- Assertion (A) is correct: If a break in the monsoon occurs during critical crop growth stages (such as flowering, pegging, or grain filling), the resulting soil moisture stress can cause substantial yield losses.
- Reason (R) is incorrect: Saying that yield reduction occurs only when the break in the monsoon exceeds 15 days is incorrect. In sandy soils or soils with low water-holding capacity, a dry spell of even 7 to 10 days during a critical stage can cause severe moisture stress and significantly reduce yields.
Thus, Assertion (A) is correct but Reason (R) is incorrect.

Step 3: Final Answer:
The combination corresponds to Option (C).