Name the technique of watering plants which minimises the wastage of water.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a technique of watering plants that reduces water wastage.

2. **Identifying the Technique**: The technique that is specifically designed to minimize water wastage while watering plants is known as "drip irrigation."

3. **Explaining Drip Irrigation**: Drip irrigation is a method where water is delivered directly to the roots of the plants in a controlled manner. This is done through a system of tubes, pipes, and emitters that allow water to drip slowly to the roots.

4. **Benefits of Drip Irrigation**: This technique ensures that only the necessary amount of water is provided to the plants, which helps in reducing water wastage significantly. It also allows for better absorption of water by the soil and plants.

5. **Conclusion**: Therefore, the answer to the question is "drip irrigation."