Question

Match List-I with List-II

Choose the correct answer from the options given below:

• A. (A)-(I), (B)-(II), (C)-(III), (D)-(IV)
• B. (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
• C. (A)-(III), (B)-(IV), (C)-(II), (D)-(I)
• D. (A)-(IV), (B)-(III), (C)-(I), (D)-(II)

Hint:

Atrazine is the signature herbicide for maize and sorghum (B-IV).
Quizalofop-p-ethyl is a grass-killer used in broadleaf crops like soybean (C-I).
These matches immediately lead to the correct option (B).

Answer 1

The Correct Option is B

Step 1: Understanding the Concept:
Chemical weed control depends on the selectivity of herbicides, allowing the target crop to tolerate the chemical while weeds are controlled.

Step 3: Detailed Explanation:
- Wheat (A): Matches with Sulfosulfuron (III), a selective post-emergence sulfonylurea herbicide widely used to control Phalaris minor and broadleaf weeds in wheat.
- Sorghum (B): Matches with Atrazine (IV), a selective pre-emergence triazine herbicide tolerated by sorghum and maize due to their ability to rapidly metabolize the compound.
- Soybean (C): Matches with Quizalofop-p-ethyl (I), an aryloxyphenoxypropionate ("fop") herbicide used selectively to control annual and perennial grassy weeds in broadleaf crops like soybean.
- Sugarcane (D): Matches with Halosulfuron-methyl (II), which is highly effective for controlling purple nutsedge (Cyperus rotundus) in sugarcane.

Step 4: Final Answer:
The matching sequence is (A)-(III), (B)-(IV), (C)-(I), (D)-(II), which is option (B).