Bạculoviruses (Nucleopolyhedrovirus) does not show

Options

A. Host specify
B. Narrow spectrum applications
C. Effects on non-target pathogens
D. Utility in IPM programme

Answer

### Step-by-Step Solution:

1. **Understanding Baculoviruses**: Baculoviruses, specifically Nucleopolyhedrovirus, are a group of viruses that primarily infect insects. They are known for their specificity and narrow host range.

2. **Analyzing the Options**: The question asks what Baculoviruses do not show. The options provided include:
- Host-specified narrow-spectrum applications
- Effects on non-target pathogens
- Utility in Integrated Pest Management (IPM) programs

3. **Evaluating Host-Specificity**: Baculoviruses are indeed known for their host-specificity, meaning they target specific insect hosts rather than a broad range of organisms. Therefore, they do show host-specified narrow-spectrum applications.

4. **Evaluating Effects on Non-Target Pathogens**: Baculoviruses are designed to target specific insect pests and generally have minimal to no impact on non-target pathogens. This means they do not show significant effects on non-target pathogens.

5. **Evaluating Utility in IPM Programs**: Baculoviruses are utilized in Integrated Pest Management (IPM) programs due to their specificity and effectiveness against certain pests. Therefore, they do show utility in IPM programs.

6. **Conclusion**: Based on the analysis, Baculoviruses do not show effects on non-target pathogens.

### Final Answer:
Baculoviruses (Nucleopolyhedrovirus) do not show effects on non-target pathogens.