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This report relies on fi ndings from several national surveys and current literature to assess water resource use and conservation measures within the U.S. irrigated crop sector. U.S. agriculture accounts for 80-90 percent of the Nation’s consumptive water use (water lost to the environment by evaporation, crop transpiration, or incorporation into products. Expanding water demands to support population and economic growth, environmental flows (water within wetlands, rivers, and groundwater systems needed to maintain naturalecosystems), and energy-sector growth, combined with Native American water-right claims and supply/demand shifts expected with climate change, will present new challenges for agricultural water use and conservation, particularly for the 17 Western States that account for nearly three-quarters of U.S. irrigated agriculture. Despite technological innovations, atleast half of U.S. irrigated cropland acreage is still irrigated with less effi-cient, traditional irrigation application systems. Sustainability of irrigated agriculture will depend partly on whether producers adopt more effi cient irrigation production systems that integrate improved onfarm water management practices with effi-cient irrigation application systems.

Keywords: agricultural water conservation ; irrigated agriculture ; irrigation effi ciency ; water supply and demand ; irrigation technologies ; water management practices ; water conservation policy

Subject(s): Environmental Economics and Policy

Resource /Energy Economics and Policy

Issue Date: Sep 27 2012

Publication Type: Report

PURL Identifier: http://purl.umn.edu/134692

Total Pages: 67

Series Statement: Economic Information Bulletin

Number 99

Record appears in: United States Department of Agriculture (USDA) > Economic Research Service > Economic Information Bulletin

Autor: Schaible, Glenn D. ; Aillery, Marcel P.

Fuente: http://ageconsearch.umn.edu/record/134692?ln=en

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