Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R:
Assertion A: The irrigation efficiency in India is only about 35% to 40%.
Reason R: Performance evaluation of irrigation system is useful to examine the efficiency of each component of the system and helps to take necessary measures for improvement in efficiency.
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:

To test this relationship, connect the statements using "because":
"Indian irrigation efficiency is 35%-40% *because* performance evaluations help identify losses."
This shows the two statements are independent facts, making Option B the correct choice.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Irrigation efficiency is a measure of how effectively water is conveyed and applied to crops.
Evaluating the performance of irrigation systems is an important management practice used to identify where water is lost and implement improvements.

Step 2: Detailed Explanation:
Let us evaluate both statements:
1. Assertion A: The irrigation efficiency in India is only about 35% to 40%.
This statement is correct.
In India, the overall efficiency of major and medium canal irrigation systems is low, typically ranging from $35\%$ to $40\%$.
This low efficiency is due to several factors:
- High seepage losses in unlined canals.
- Poor maintenance of the delivery network.
- Inefficient traditional surface flooding methods used by farmers.
Therefore, Assertion A is true.
2. Reason R: Performance evaluation of irrigation system is useful to examine the efficiency of each component of the system and helps to take necessary measures for improvement in efficiency.
This statement is correct.
Systematic performance evaluations measure conveyance efficiency, field application efficiency, and distribution uniformity.
These measurements help identify where the largest water losses occur (such as canal leaks or over-irrigation), allowing managers to implement targeted improvements like canal lining or scheduling changes.
Therefore, Reason R is true.
However, the fact that performance evaluations are useful (Reason R) does not explain *why* the actual irrigation efficiency in India is currently so low ($35\%$ to $40\%$).
The low efficiency is caused by physical losses and traditional management practices, not by the practice of evaluating performance.
Therefore, Reason R is not the correct explanation of Assertion A.

Step 3: Final Answer:
Both Assertion A and Reason R are true, but Reason R is not the correct explanation of Assertion A.
Hence, the correct option is (B).