performance of large irrigation schemes using the example of the gezira scheme in sudan
TRANSCRIPT
SOURCES1 WWDR6 (2015)2 WWAP (2016)3 WWDR4 (2012)
WE HAVE A GLOBAL FOOD SECURITY PROBLEM
IRRIGATED AGRICULTURE has a higher potential than RAINFED AGRICULTURE
WE NEED TO INCREASE AGRICULTURAL OUTPUT
by 2050 food demand will increase by100% due to: 1
This leaves us with two options:
WHY?
OR
population growth
use more land
irrigated land has 2.7 times higher productivity than rainfed agriculture 3
irrigated agriculture is less vulnerable to rainfed-shortages and climate variabliity
irrigation agriculture helps farmers gain more income due to larger harvest and lower risk of crop failure
improve productivity of available land
better markets and trade meaning plenty of accesable food
changing lifestyles with higher income: people eat more
you can produce more with less land
irrig
ated
rain
fed
irrigation agriculture is more resilient than rain-fed
agricultureof cultivated land from irrigation produces
! 20%
40% of global food 2
IRRIGATION IS THE
SOLUTION
1
SOURCES1 FAO (2012)2 Siebert et al. (2013)
Global Economy
over 1 billion people are employed in world agriculture
1 in 3 of all workers
Agriculture is very important for least developed countries
in Sub-saharan Africa over 60% of the entire workforce are involved in agriculture
Developing Countries
Least Developed CountriesCentral African Republic
ChadEthiopia
Kenya
AGRICULTURE IS IMPORTANT FOR DEVELOPMENT AND EMPLOYMENT
While agriculture is not so significant for developed countries, it contributes a great deal to the economy of the least developed countries: 1
3%10%
60%53%
42%30%
!
200,000,000
150,000,000
100,000,000
50,000,000
AFRICA AMERICA ASIA EUROPE OCEANIA
AREAS EQUIPPED WITH AGRICULTURE BY CONTINENT 2
total area equipped for irrigation
with ground water
with surface water
area actually irrigated
2
WHERE AND HOW IS IRRIGATION IMPORTANT
The map below shows major river-based irrigation schemes around the world
NILE DELTA, Egypt3.4 million ha of cropped land85% is irrigatedWheat, rice, clover, maizeMain agricultural area of Egypt
EUPHRATES-TIGRIS, IraqCovers 879,790 km2
Wheat, Barley, other Feed Grains6.5–7 million ha equipped for irrigation
MISSISSIPPI, USACovers 3.225 million km2
Rice, Corn, Soybeans, Cotton, FishAbout 2% of cropped acres are irrigated in the Upper Mississipi River Basi
ACONCAGUA RIVER, Central ChileThe Basin covers 7.200 km2
Grapes, Avocado, Horticulture, PasturePrecipitation has decreased in the last century; rainfall is predicted to decline 25%-35% by 2040–2070
INDUS Irrigation System, Pakistan15 million ha Wheat, Cotton, Rice, FruitsContributes to a large portion of employment and export earnings
GANGES, India, Nepal, BangladeshCovers 1,087,300 km2 Sugarcane, cotton and oilseeds 34.1 million ha are irrigated
HUANG HE (Yellow River), China5,463 km long (2nd longest in China) Grains, Cotton, Oil4,5 million ha of irrigated annual crops5 million ha of irrigated land
MISSOURI, USACovers 820,700 km2 Corn, Soybeans, Wheat and other small Grain CropAbout 14 % of cropped acres are irrigated
PO RIVER, Italy652 km long1.1 million ha of irrigated area2.7 mil ha UAA Forage & arboreal cropsThe predominant irrigation system is surface irrigation (almost 50%)
YANGTZE RIVER, ChinaCover1.5 million km2 & 6,380 km long13,5 million ha of irrigated land
DANUBE RIVER BASIN, EuropeCovers 800,000 km2 & flows 2,850 kmAgricultural uses vary with the climate & different topology The main irrigated areas are in Slovakia, Hungary, Serbia, and Bulgaria
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Based on FAO (1985)
WHAT IS AN IRRIGATION SCHEME?
WATER CONTROL
CONVEYANCE SYSTEM
DIVERSION AND DISTRIBUTION
DRAINAGE SYSTEM
FIELD APPLICATION SYSTEM
Weir schemesPump schemesResevoir schemes
Dam
Major Canal
Minor Canal
Minor Canal
PERFORMANCE MONITORING IN IRRIGATION SCHEMES
INFRASTRUCTURE PROCESS OUTPUTMaintainance, Status of structure and Control effectiveness
Cropping area,Water use, Scheme developement
Productivity,Yield
The three dimensions of performance monitoring in irrigation schemes are::
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SOURCEGovernment statistics
THE GEZIRA IRRIGATION SCHEME
0 100 km
Main crops include cotton, wheat, groundnuts, sorghun and vegtables
The scheme is managed by the Sudan Gezira Board Around 7000 government employees support the scheme
The scheme comsumes 35% of Nile‘s water in Sudan and produces half of the country‘s agricultural output
In 2005, participatory irrigation management was introduced by the Gezira Act, introducing Water User Associations and the freedom to choose crops
There are four different types of farmers: Landowners, sharecroppers, renters and croppers
144000 tennant families
0.5 - 1 million causal workers
With 1 million hectare, the Gezira Scheme is the largest irrigation scheme under one management in the world
!
Roseires Dam
Sennar Dam
White Nile
Rahad River
Gunaid Scheme
GEZIRA SCHEME
Rahad Scheme
Essuki Scheme
Dinder River
Blue Nile
River Nile
GEZIRA TIMELINE
Construction of the Gezira scheme by the British
Expansion of the Gezira scheme under the independent Sudan
Gezira scheme contributes to one third of the economy and much of foreign exports
Continuous deteoriation of the Gezira scheme
Gezira Reform Act
Water User Associations abolished
Open future of the scheme
1914 - 1925 late 60s and early 70s 2005 Today
1958 - 1966 late 70s until early 2000s 2014
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SOURCE1,2,3 Al Zayed et al. (2015)4 Bushara (2010)PERFORMANCE OF THE GEZIRA SCHEME
INFRASTRUCTURE
PROCESS
OUTPUT
The performance of the scheme has been deteroriating in all three categories:
Reasons why: Result:
Increased sedimentation in the canals is a major problem
Relative Irrigation Supply (RIS)
1.4 is the highest level in surface irrigation allowed
*The same for Relative Water Supply (how much water altogether, irrigation and precipitation is allocated to the crops)
(RWS) has deteriorated from 1.7 to 2.6 in the same period.
Water Use Efficiency (WUE) is much less than the global average 2
Increased erosion in the Blue Nile catchment in Ethopia
Use of water during the rainy season (July - August)
Diversion of too much water
Reduced trapping of the Roseires and Sennar resevoirs
Between 1970 and 1994, the RIS in Gezira was 1.4
Between 1994 and 2010 the RIS was 2.23
The quantity of silt removed from the canals has been declining since the mid 1990s
Land productivity Productivity of Cotton
Max RIS 1.4
The average yield of main crops Gezira is much less than the attainable yield internationally 3
The productivity of cotton at country level is no exception. It is only... 4
Too much water is applied!* 1
0.6 to 1.7 kg/m3
3.3 - 4.1 t/ha 35 % of
Australian47 % of China
53 % of Egypt
61 % of Pakistan
Gezira scheme
Mean yield of Gezira scheme
Global WUE
Attainable yields
0.26 kg/m3
1.3 t/ha
0.4 kg/m3
1.6 t/ha
wheat
wheat
sorghum
sorghum
0.3 to 2.2 kg/m3
3.8 - 5.7 t/ha
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Al Zayed , I. S., Elagib , N. A. , Ribbe, L. , Heinrich, J. (2015). Spatio-temporal performance of large-scale Gezira Irrigation Scheme, Sudan, Agricultural Systems, Vol. 133, pp. 131–142.
Bushara, M.O., Barakat, H.E., (2010). Decomposing total factor productivity change of cotton cultivars in the Gezira Scheme (1991– 2007) Sudan, in 2010 AAAE Third Conference/AEASA 48th Conference, September 19–23, 2010, South Africa, African Association of Agricultural Economists (AAAE) & Agricultural Economics Association of South Africa (AEASA).
Food and Agriculture Organisation of the United Nations (FAO) (2012), Statistical Year Book 2012, Food and Agricultural Organisation document repository, FAO.
Food and Agriculture Organisation of the United Nations (FAO) (1985), Irrigation Water Management: Training Manual No. 1 - Introduction to Irrigation, FAO.
Siebert, S., Henrich, V., Frenken, K., Burke, J. (2013): Update of the Global Map of Irrigation Areas to version 5. Project report. Food and Agriculture Organization (FAO), University of Bonn.
World Water Development Report (WWDR6) (2015). Water for a Sustainable World, UN Water, United Nations (UN).
World Water Development Report (WWDR4) (2012). Managing Water under Uncertainty and Risk, UN Water, United Nations (UN).
World Water Assessment Programme (WWAP) (2016). Facts and Figures 24: Irrigated Land, UNESCO, United Nations (UN).
COPYRIGHTS AND ACKNOWLDEGEMENTS
Design and implementation by Antonia Fedlmeier | [email protected]
Scientific development by Dr. Mohammad Al-Saidi | [email protected]
For third-party contents, sources are indicated.
Citation Format for the Info-graphics:Al-Saidi, Mohammad, Fedlmeier, Antonia (2016): Info-graphics on Performance
Management of Large-Scales Irrigation Schemes in Developing Countries with the Example of the Gezira Scheme, Nexus Research Focus, TH Köln – University of Applied Sciences.
Thanks for the contributions and the support of the following people: Anna Goelnizt, Farah Taleb, Amna Omar, Mohammad Ibrahim, Dr. Nadir Elagib, Aline Bussmann, Dr. Islam Al Zayed, Claudia Raquel Aguilera Verga
Special thanks to the support of the Water Research Center of the Khartoum University, Director Prof. Dr. Gamaleldin Mortada Abdo Abdrabo
Contact and Project Leader: Prof. Dr. Lars Ribbe | [email protected] Institute for Technology in the Tropics and Subtropics (ITT), TH-Köln (University of Applied Sciences) Betzdorfer Straße 2, 50679 Köln
TechnologyArts SciencesTH Köln
CHALLENGES OF IRRIGATION MANAGEMENT
REFERENCES
LOW PERFORMANCE TRAP
IRRIGATION GOVERNANCE AND REGULATION
HIGH PERFORMANCE PATHWAY
Low irrigation productivity and
efficiency
Design equitable land ownership
regulations
Achieve farmers‘ and civil society‘s
participation
Make sustainable irrigation management
a political priority
Increase transparency and law enforcement
Ensure coordination & collaboration among
different state and private institutions
Promote access to local and international food
markets
Low cost production &
high yield
Poor livelihoods
of farmers & stakeholder
(conflict)
Regional growth & income
generation
Low collection rate & scheme
income
Lack of investment & maintenance
Poor irrigation infrastructure
& scheme management
Optimal cropping & water use
system
Investment in irrigation
infrastructure & monitoring
system
Technology transfers, modern
infrastructure, good data
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The performance of large-scale irrigation schemes like the Gezira scheme is determined by many interdependent factors. A comprehensive approach of performance management is essential while irrigation governance and regulation reforms determine performance success.