Revitalizing Irrigation


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Revitalizing Irrigation
Adapted from IWMI Issue Brief #9

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  • ADAM to MARTINA: Have made them the same red as slide 8.Martina to Adam: bullet points should be in a brighter colour I think.
  • Revitalizing Irrigation

    1. 1. Revitalizing Irrigation<br />Adapted from IWMI Issue Brief #9<br /> <br /> <br />
    2. 2. More than9 billion people will inhabit the Earth by 2050<br /> <br />Asia and Africa are the two most populous continents on the planet: 60% of the world’s people live in Asia; 12% live in Africa<br />How will we feed ourselves?<br />
    3. 3. We will need to grow more food <br />...and we will need to grow it more efficiently<br />
    4. 4. With non-farm water requirements growing and little land left on which to expand agriculture…<br />...boosting productivity from existing irrigated lands is crucial<br />
    5. 5. In the 1970s and 1980s, increased investments in irrigation helped lower food prices<br />
    6. 6. But today, irrigation is stagnating... <br /> is declining across Asia and is absent in much of Africa<br />
    7. 7. IWMI’s position on revitalizing irrigation <br />In 2007, IWMI reported on the world’s future water needs in Water for food, water for life: A comprehensive assessment of water management in agriculture <br />
    8. 8. What were the main conclusions?<br /><ul><li>Sub-Saharan Africa needs investments in infrastructure and institutions, and greater success with those investments</li></ul> <br /><ul><li>in Asia, greater yields can be extracted from existing irrigation</li></li></ul><li>So...<br />Revitalizing irrigation across these continents is the key to ensuring future food security<br />
    9. 9. What needs to be done?<br />ASIA<br />
    10. 10. Asia’s irrigation infrastructure has stagnated in recent decades <br />
    11. 11. Farmers are growing a wider range of crops than the old staples of rice and wheat<br />Millions of farmers are pumping groundwater when and where they choose<br />
    12. 12. In 2009, IWMI scientists looked at how Asia– home to 70% of the world’s 277 million hectares of irrigated land – could boost its agricultural productivity<br />
    13. 13. ?<br />Using a computer model named WATERSIM (, the researchers investigated how food production, water use and irrigation requirements might change, given certain economic and environmental conditions<br />
    14. 14. The result?<br />Three quartersof the additional food supply required in Asia could be met by boosting performance from existing irrigated areas<br /> <br />
    15. 15. The result?<br />The study was published in 2009 in Revitalizing Asia’s Irrigation: To sustainably meet tomorrow’s food needs, which proposes investment strategies designed to reinvigorate irrigation across Asia<br />
    16. 16. The new farming requires demand-driven water supplies…<br />…not the supply-driven allocations of the old systems <br />
    17. 17. The strategies<br /><ul><li>Modernizing irrigation schemes for tomorrow’s needs
    18. 18. Supporting farmers’ self-installed irrigation schemes
    19. 19. Expanding capacity and knowledge</li></li></ul><li>What needs to be done?<br />AFRICA<br />
    20. 20. In sub-Saharan Africa, irrigation covers only 5%of the total cultivated area of 183 million hectares – the lowest proportion of any region in the world<br />
    21. 21. In 2007, Investment in Agricultural Water for Poverty Reduction and Economic Growth in Sub-Saharan Africa* made recommendationsto funding agencies<br />* A collaborative program of the African Development Bank, the Food and Agriculture Organization of the United Nations, the International Fund for Agricultural Development, IWMI and the World Bank<br />
    22. 22. Recommendations for Sub-Saharan Africa <br /><ul><li>Increase investment in irrigation and other agricultural water-management methods, from large- to small-scale infrastructure
    23. 23. Ensure that benefits from new initiatives reach the poor, especially women</li></li></ul><li>Currently in West Africa...<br />IWMI is leading a project to diagnose underperformance of irrigation schemes in Burkina Faso and Niger<br />The United States Agency for International Development, governments and other stakeholders will use the results to boost production of the schemes by up to 50%<br />
    24. 24. There are other ways to producemore crop per drop in Asia and Africa:<br /><ul><li>Land rehabilitation
    25. 25. Integrated approaches at the farm scale
    26. 26. Integrated approaches at the landscape scale</li></li></ul><li><ul><li>Land rehabilitation</li></ul>Waterlogging and salinization can be managed through on-farm remediation<br />This is more affordable than conventional salinity control measures, and also use less water<br />
    27. 27. <ul><li>Land rehabilitation</li></ul>Bright Spots, a project undertaken by IWMI and partners, assessed the vegetative bioremediation of saline and sodic soils and the rehabilitation of abandoned lands in Central Asia<br />The project promoted useful plant species to lower saline water tables and rehabilitate salt-affected soils<br />See<br />
    28. 28. <ul><li>Land rehabilitation</li></ul>Bright Spots also evaluated the use of marginal quality drainage waters for crop production and promoted techniques for managing soil salinity<br />
    29. 29. <ul><li>Integrated approaches at the farm scale…</li></ul>Allocating water supplies for multiple uses – such as drinking water, livestock rearing, crop irrigation and fisheries – can increase efficiency… <br />
    30. 30. <ul><li>Integrated approaches at the farm scale…</li></ul>For example: storage ponds for controlling water deliveries can be used to farm fish, boosting family nutrition and providing extra income<br />
    31. 31. <ul><li>Integrated approaches at the landscape scale…</li></ul>Maintaining vital ecosystem services by managing non-farmed land – such as wastelands, rivers and wetlands – maximizes productivity through smarter application of technology and an emphasis on ecosystem-wide sustainability<br />
    32. 32. Where to from here?<br />“More than anything, irrigation must respond to changing requirements, serving an increasingly productive agriculture”<br />From Water for food water for life: a comprehensive assessment of water management in agriculture, 2007<br />
    33. 33. Water Issue Briefs highlight issues of concern to professionals working in water and land resources management and related fields<br />For more information:<br /><br />Improving the management of land and water resources for food, livelihoods and the environment<br />