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  1. Irrigation - Wikipedia

    Irrigation is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been …

  2. Irrigation | Definition, History, Systems, & Facts | Britannica

    Feb 11, 2026 · Some land requires irrigation before it is possible to use it for any agricultural production. In other places, irrigation is primarily a means to supplement rainfall and serves to increase …

  3. Irrigation - National Geographic Society

    Dec 9, 2024 · Letting water drop onto plants through holes in pipes, known as drip irrigation, is considered one of the most efficient methods of irrigation. Drip irrigation focuses the water onto the …

  4. Irrigation Methods: A Quick Look | U.S. Geological Survey

    Jun 11, 2018 · Irrigation is the controlled application of water for agricultural purposes through manmade systems to supply water requirements not satisfied by rainfall. Crop irrigation is vital throughout the …

  5. Irrigation & Water Use | Economic Research Service

    Jan 27, 2026 · Irrigated agriculture relies on both surface water and groundwater to support crop production. According to the 2023 Irrigation and Water Management Survey, about 45 percent of all …

  6. What is an Irrigation System? Types, Design, and Innovations ...

    Irrigation water can come from groundwater, springs or wells, surface water, rivers, lakes, or reservoirs, or even other sources, such as treated wastewater or desalinated water. It is critical that farmers …

  7. How Irrigation Works - HowStuffWorks

    ­Irrigation helps take care of one of these needs by providing water. While the basic concept of irrigation is a simple one, there are many fascinating and remarkable systems in use today.