Why do vegetables often require irrigation in arid and semi-arid regions?

In arid and semi-arid regions, irrigation is essential for vegetable production because these areas typically experience little to no rainfall for much of the year, creating a deficit that prevents crops from growing naturally. While these regions often possess soils rich in nutrients and abundant solar energy, they lack the consistent moisture required for plant development.12

Modern vegetable farming requires a precise, year-round balance of soil moisture to meet market demands for high-quality produce. Because vegetable crops have specific needs regarding root depth, growth stages, and drought tolerance, growers must use irrigation to maintain optimal soil conditions. In arid zones, this practice is not merely an insurance policy against drought—as it is in more humid climates—but a fundamental requirement to sustain agriculture where natural precipitation is insufficient to support crop life.314