Estimating the potential of rain-fed agriculture
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International Water Management Institute
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A global estimate of the potential for rain-fed agriculture could provide an answer to the question "How much irrigation is required?" Global studies done to date have relied on course resolution climate data (0.5-1 degree arc). In this study a high-resolution climate dataset (10-minute arc) was combined with a soil water storage capacity map and a dynamic water and crop model to estimate the potential for rain-fed agriculture. The methodology applied here, based ona high-resolution climate dataset, allows analyses on a global scale without losing the smaller regional-scale issues.
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irrigation management, water management, irrigated farming, rain-fed farming, crop production, food production, irrigation effects, climate, models, soil-water-plant relationships, crop yield, evapotranspiration