Name a common practice to reduce evaporation loss in irrigation.

Mulching the soil surface is an effective practice to reduce evaporation loss in irrigation. Mulch serves as a protective layer over the soil, helping to retain moisture by blocking the sun's rays and creating a barrier that reduces wind exposure. This regulation of temperature and moisture minimizes the evaporation rate from the soil, allowing water to remain available to plants for a longer period.

Additionally, mulch can contribute to soil health, suppress weeds, and improve soil structure over time. By retaining moisture in the soil, plants are less stressed during dry periods, leading to better growth and crop yield. This practice is particularly beneficial in arid and semi-arid regions where water conservation is crucial for sustainable agriculture.