What is the primary purpose of mulching in irrigation practices?

Mulching is primarily used in irrigation practices to retain soil moisture and suppress weed growth. By applying a layer of mulch—whether organic materials like wood chips or straw, or inorganic materials like landscape fabric—water evaporation from the soil surface is significantly reduced. This moisture retention is especially beneficial in hot and dry conditions, ensuring that plants have a continuous supply of water.

Additionally, mulch serves as a barrier that inhibits the growth of weeds by blocking sunlight from reaching the soil surface, thus preventing weed seeds from germinating. This dual function of moisture retention and weed suppression makes mulching a valuable practice in effective irrigation management, promoting healthier plant growth and reducing the need for chemical herbicides.