Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: In potato cultivation, the dehaulming is done to produce quality seed tubers.
Reason R: Dehaulming in potato seed crop is done 10-15 days before harvesting of the crop.
In light of the above statements, choose the correct answer from the options given below:

• A. Both A and R are true.
• B. Both A and R are false.
• C. A is true but R is false.
• D. A is false but R is true.

Hint:

Dehaulming can be performed manually, mechanically, or using contact herbicides. It is essential for producing disease-free seed potatoes with tough skins.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Dehaulming refers to the physical or chemical cutting or destruction of the above-ground vegetative parts (haulms) of potato plants. This is a crucial management practice, especially in seed potato production.

Step 2: Detailed Explanation:
Assertion A Analysis: In seed potato crops, dehaulming is performed to ensure high-quality seed tubers. Cutting off the foliage stops the transmission of aphid-borne viral diseases to the underground tubers. It also helps restrict the size of the tubers to the optimal commercial seed-size range (usually 30–45 mm). Thus, Assertion A is correct.
Reason R Analysis: Dehaulming is typically performed 10-15 days before the planned harvesting date. This interval allows the tuber skins to mature and harden (suberize) in the soil. Harder skins prevent skinning, bruising, and mechanical injuries during harvest, which drastically reduces post-harvest fungal and bacterial infections in storage. Thus, Reason R is correct.
Both statements are true.

Step 3: Final Answer:
Hence, both A and R are true.