How the future of US corn, soybean and wheat production depends on sustainable groundwater use

In the U.S., 52% of irrigated land is used for corn, soybean and winter wheat production. Corn and soybean are two of the country's most important crops, with 17% of corn production and 12% of soybean production coming from irrigated areas. However, the water used for this irrigation is often unsustainably pumped groundwater.  According to a recent Dartmouth-led study published in Earth's Future, using groundwater sustainably for agriculture in the U.S. could dramatically reduce the production of corn, soybean and winter wheat. 

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