What is the advantage of using subsurface irrigation?

Using subsurface irrigation offers significant advantages, particularly in terms of reducing water loss due to evaporation. Since subsurface systems deliver water directly to the root zone of plants, they minimize water exposure to the atmosphere. This design allows for more efficient water usage, as only the necessary amount of water is available to the plants, limiting the amount that evaporates before it can be absorbed.

This method is especially beneficial in arid and semi-arid regions, where evaporation rates are high and water conservation is crucial. By keeping water below the surface, subsurface irrigation also helps maintain higher humidity levels around the soil surface, further decreasing evaporation losses. It supports healthier plant growth by providing consistent moisture and nutrients directly to the roots, leading to greater efficiency and potentially higher crop yields while conserving precious water resources.

While less labor-intensive options may exist and moisture retention might improve soil health, the primary and most impactful benefit remains the dramatic reduction in water loss through evaporation.