What does the term "ebb and flow" refer to in irrigation practices?

The term "ebb and flow" specifically refers to a method of irrigation in which water is periodically added to and drained from the growing area. This technique allows plants to be watered while also ensuring that excess water is removed, preventing waterlogging and ensuring that oxygen reaches the roots. The cycle of flooding and draining promotes healthy root growth and helps maintain the appropriate moisture levels for plant development.

In this system, trays or containers are typically flooded with nutrient-rich water, allowing the roots to absorb the needed moisture and nutrients. Once sufficient time has passed, the water is drained away, allowing for air exchange around the roots. This ebb and flow cycle mimics natural processes, improving plant health and growth rates.