Question

Maleic hydrazide is used to

• A. Enhance ripening
• B. Control sprouting
• C. Enhance maturity
• D. Value addition

Hint:

Associate specific growth regulators with their primary functions. Ethylene/Ethephon for ripening, Auxins (IBA, NAA) for rooting, Gibberellins (GA3) for breaking dormancy and fruit size, and Maleic Hydrazide (MH) for sprout inhibition.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
The question asks for the primary use of Maleic hydrazide (MH) in agriculture, particularly in post-harvest management.

Step 2: Detailed Explanation:
Maleic hydrazide is a plant growth regulator. Its main function is to inhibit cell division. When sprayed on crops like potatoes and onions in the field before harvest, it is absorbed by the plant and translocated to the storage organs (tubers or bulbs). During storage, it effectively inhibits cell division in the dormant buds, thereby preventing sprouting. Sprouting reduces the quality and storage life of these commodities. MH does not enhance ripening (ethylene does) or maturity. While controlling sprouting is a form of value addition, its specific physiological function is sprout control.

Step 3: Final Answer:
Maleic hydrazide is used to control sprouting, especially in potatoes and onions.