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Irrigation dates back to roughly 6000 BC, when the waters of the Nile and Tigris-Euphrates were first diverted to feed farmers’ fields. Today, agriculture consumes 70 percent of the world’s freshwater resources, and irrigation is essential for 40 percent of the world’s food production. Because pumping and distributing water requires large quantities of energy, irrigation is a source of carbon emissions.

Irrigation technologies have evolved to help farmers use water more precisely and efficiently. Both drip and sprinkler methods make water application more exact, delivering as precisely as possible the amount crops need to thrive. With 70 to 90 percent application efficiency, they reduce overall water and energy consumption.