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World Resources Institute. 2006. Earthtrends - Trade in Goods and Services: Exports of goods and services. http://earthtrends.wri.org/searchable_db/index.php?theme=5 (accessed October 3, 2006)
Uploaded on Tuesday 21 Feb 2012
Water, irrigated cropland percentage by region
Hugo Ahlenius, UNEP/GRID-Arendal
Irrigated land currently produces 40% of the world’s food on 17% of the world’s land. A broadening of irrigation and more effective rain fed agriculture will be necessary to meet the need for increasing agricultural outputs – for domestic use and exports.