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Increasing Water Productivity in the Agricultural Sector

The world population is expected to increase to more than 9 billion by 2050 (FAO, 2011).‎ Demand for food and fiber will also increase as incomes and standards of nutrition rise and as people consume more land- and water-intensive diets (i.e.‎, consumption of more meat and dairy products).‎ Current estimates suggest that by 2050 annual cereal production will rise to about three billion tonnes and meat production to more than 200 million tonnes (FAO, 2006).‎ To produce this amount of food, irrigated land must increase by 35%, and 20% more water must be diverted to agriculture.‎ However, due to increasing inter-sectoral competition for water and decreasing investment in irrigation development, expansion of irrigated lands will be no more than 5%, and water diversions for irrigation are projected to decrease by 8% because of climate change and other management issues.‎ Thus in the future irrigation's con-tribution to food security will have to come from improving existing systems and increasing the productivity of available water resources.‎ Under the "business as usual" scenario (i.e.‎, continuing with the current agricultural practices and water productivity levels), 4500 km 3 yr more water will be needed to feed the world's population by 2050 (Falkenmark et al.‎, 2009).‎ This is roughly twice the amount of water presently used in irriga-tion ‪(Kijne et al.‎, 2009)‬.‎ 

Authors: 
Asad Sarvar Qureshi
Year: 
۲۰۱۹
Publication type: 
Scientific Paper
Publication Source: 
Indus River Basin
Volume/Chapter/Issue: 
۱۰
Page Number: 
۲۲۹ - ۲٤٤