Question

Match List - I with List - II.

List - I (Crops)	List - II (Moisture sensitive period)
A. Wheat B. Sunflower C. Soybean D. Onion	I. Bulb formation to maturity II. Flowering and seed formation III. Flowerbud initiation, head initiation, flowering and milky stage IV. Crown root initiation, shooting and heading

• A. A-IV, B-II, C-III, D-I
• B. А-ІІ, В-ІII, C-I, D-IV
• C. А-ІІІ, В-I, C-IV, D-II
• D. A-IV, B-III, C-II, D-I

Hint:

Wheat CRI stage occurs approximately 21 days after sowing. If a farmer has only one irrigation available for wheat, it must be applied at CRI to avoid drastic yield loss.

Answer 1

The Correct Option is D

Concept: Moisture-sensitive periods are specific physiological stages in a crop's life cycle when water deficiency causes the greatest reduction in yield. Efficient irrigation management requires prioritizing these stages.

Step 1: Identify the critical stages for Wheat (A).
In Wheat, the Crown Root Initiation (CRI) is the most critical stage, followed by shooting (jointing) and heading. Thus, A matches with IV.

Step 2: Match Oilseeds (B and C).
1. Sunflower (B): Water is critical from flower bud initiation through the head initiation and flowering stages until the milky stage. Thus, B matches with III.
2. Soybean (C): Like most legumes, the most sensitive stages are flowering and the subsequent pod/seed formation. Thus, C matches with II.

Step 3: Identify the critical stage for Onion (D).
For bulb crops like Onion, the most sensitive period is during the active expansion of the bulb (bulb formation) until maturity. Thus, D matches with I.

Step 4: Conclusion.
The resulting sequence is A-IV, B-III, C-II, D-I, which is Option (4).