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World Water Day: Global efforts to conserve our most precious food resource

Christian Science Monitor: This Saturday, March 22nd, the world celebrates World Water Day. Water and agriculture are inextricably interlinked and interdependent. Agriculture is a major user of both ground and surface water for irrigation--accounting for about 70 percent of water withdrawal worldwide. Modern irrigation practices, including center pivot irrigation systems, can help improve crop productivity and yields. Unfortunately, irrigation is also the source of excessive water depletion from aquifers, erosion, and soil...