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How does irrigation allow farmers to grow more than one crop in a year?

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Large wheeled irrigation sprinkler sprays water over green crops in a field, with mountains and cloudy sky in the background. — Irrigation Specialized irrigation equipment watering crops in a field.

Irrigation allows farmers to grow more than one crop in a year by providing a consistent, reliable supply of water that is independent of the timing or variability of natural rainfall.12

In many agricultural regions, the growing season is limited by the availability of soil moisture. By using irrigation—the artificial application of water to land—farmers can maintain the precise balance of soil moisture required for plant growth throughout the year. This control enables producers to plant and harvest crops during periods that would otherwise be too dry for agricultural production.3214

Furthermore, irrigation facilitates the full use of modern agricultural technology, such as the application of fertilizers and the selection of more productive crop varieties, which can support intensive farming cycles. By ensuring that sufficient water is available at the proper time, farmers can maximize the productivity of their land, effectively extending the growing season and allowing for multiple harvests within a single year.2