which of the following had been used for controlling sugarcane leaf hopper ?

Options

A. predator bug
B. Bollworm
C. Predator mantis
D. lady lug

Answer

To solve the question of which organism has been used for controlling the sugarcane leafhopper, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Pest**: The question mentions the sugarcane leafhopper, scientifically known as *Pyrella securida*. Understanding the pest is crucial for determining its control methods.

2. **Research Control Methods**: Various methods can be used to control pests, including chemical pesticides and biological control agents (biocontrol agents). In this case, we focus on biocontrol methods.

3. **List the Options**: The options provided are:
- Predator bug
- Ballworm
- Predator mantis
- Ladybug

4. **Analyze Each Option**:
- **Predator Bug**: This term generally refers to various insects that prey on other pests. It can be a suitable option.
- **Ballworm**: This is typically a pest itself and not a control agent, so it is not a correct choice.
- **Predator Mantis**: While mantises are predators, they are not specifically known for controlling sugarcane leafhoppers.
- **Ladybug**: Ladybugs are known to be effective biocontrol agents as they feed on aphids and other small insects, including some leafhoppers.

5. **Determine the Best Answer**: Based on the analysis, the best option for controlling the sugarcane leafhopper is the **Predator Bug**, which includes ladybugs as a type of predator bug.

### Final Answer:
The correct answer is **Predator Bug**.