Question:
Which of the following is used as growth regulator against mites?
Which of the following is used as growth regulator against mites?
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Hexythiazox is a classic acaricide belonging to the thiazolidine class. Keep in mind that it is an egg-and-nymph developmental inhibitor (mite growth regulator).
Updated On: Aug 18, 2026
- Bifenazate
- Propargite
- Hexythiazox
- Diafenthiuron
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Chemical compounds that specifically target developmental stages (eggs, larvae, nymphs) of pests by inhibiting normal molting, chitin synthesis, or metamorphosis are classified as growth regulators.
Step 2: Detailed Explanation:
Hexythiazox is a highly effective, narrow-spectrum acaricide that functions primarily as a mite growth regulator (MGR).
It inhibits the synthesis of chitin, thereby preventing the development of eggs, larvae, and nymphs of phytophagous mites.
While it is highly ovicidal and larvicidal, it does not directly kill adult mites, but it sterilizes adult female mites.
- Bifenazate and Propargite are neurotoxic contact acaricides.
- Diafenthiuron is an inhibitor of mitochondrial ATPase.
Step 3: Final Answer:
The growth regulator against mites is Hexythiazox, which is option (C).
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