Flexible Irrigation Supply Pilot Projects—Part II: Sri Lanka, Pakistan, India, Egypt

by John L. Merriam, California Polytechnic State Univ, San Luis Obispo, United States,



Document Type: Proceeding Paper

Part of: Irrigation and Drainage

Abstract:

The Sri Lanka project covers about 150 one hectare farms on the lower half of a unit served by one distributary. The upper part, because of delays in construction, was left as an earth ditch rotation schedule area similar to the rest of the Mahaweli Development Board Area H project. Pilot projects on tertiary supply channels delivering water to the farmers can demonstratee the great value of a flexible demand or arranged schedule. The values to the farmer from permitting control of frequency, rate and duration are many and valuable. Some are: improve irrigation and farm management; save labor and make it convenient; save water and rainfall; reduce drainage and salinity problems from over-irrigtion; increase crop production; and enhance social welfare.



Subject Headings: Developing countries | Water supply | Irrigation | Agriculture | Resource management | Water resources | Case studies | Scheduling | Asia | Sri Lanka | Egypt | Africa | Middle East | India | Pakistan

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