Question

NPV is mostly used to control-

• A. Lepidopteran larvae
• B. Dipteran larvae
• C. Locust
• D. Mosquitoes

Hint:

NPV = Biological control agent against caterpillars (Helicoverpa, Spodoptera, etc.).

Answer 1

The Correct Option is A

Step 1: Understanding NPV.
NPV stands for Nuclear Polyhedrosis Virus, which is a type of Baculovirus. It specifically infects and kills insects, particularly at their larval stages.
Step 2: Target group.
NPV is highly effective against Lepidopteran larvae, such as Helicoverpa armigera, Spodoptera litura, and other caterpillars. These larvae cause severe damage to crops like cotton, pigeon pea, and vegetables.
Step 3: Checking options.
- Lepidopteran larvae → Correct, this is the main use of NPV.
- Dipteran larvae → Controlled by other biological agents, not NPV.
- Locust → Controlled using fungal pathogens, not NPV.
- Mosquitoes → Controlled using Bti (Bacillus thuringiensis israelensis), not NPV.
Step 4: Conclusion.
Thus, NPV is primarily used to control Lepidopteran larvae.