Yield Gap Analysis: Implications for Research and Policy

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IRRIGATED AREA (Mha) Global Irrigated Area and as a % of Total Cultivated Land Area, 1966-2004 300 250 200 150 100 Irrigated Area 1965 1975 1985 1995 2005 YEAR % of total cultivated area Irrigated systems occupied 18% of cultivated land area but produced 40% of human food supply 20.0 17.5 15.0 12.5 10.0
Decreasing water supply in all major irrigated areas Yet, irrigated agriculture produces 40% of global food supply on just 18% of the cropped area.
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