Why is excessive irrigation harmful to the crops?

Explanation

### Step-by-Step Solution:

1. **Understanding Irrigation**: Irrigation is the process of supplying water to crops to help them grow. Plants require water to carry out essential functions such as photosynthesis and nutrient absorption.

2. **Optimum Water Level**: Each crop has an optimum water requirement. This is the ideal amount of water that allows the plants to thrive and yield maximum produce.

3. **Excessive Irrigation Defined**: Excessive irrigation occurs when more water is supplied to the crops than they need. This can lead to various problems in the soil and the plants.

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