Record Details

Producing more rice with less water from irrigated systems

CGSpace

View Archive Info
 
 
Field Value
 
Title Producing more rice with less water from irrigated systems
 
Creator Guerra, L.C.
Bhuiyan, S.I.
To Phuc Tuong
Barker, Randolph
 
Subject irrigation management
water use efficiency
crop production
water requirements
water balance
rice
water distribution
irrigated farming
productivity
on-farm research
irrigation scheduling
groundwater
conjunctive use
rehabilitation
modernization
farmer participation
farming systems
irrigation systems
crop-based irrigation
 
Description Over the past decade, we have witnessed a growing scarcity of and competition for water around the world. As the demand for water for domestic, municipal, industrial, and environmental purposes rises in the future, less water will be available for agriculture. But the potentials for new water resource development projects and expanding irrigated area are limited. We must therefore find ways to increase the productivity of water used for irrigation. This paper reviews the literature on irrigation efficiency and on the potential for increasing the productivity of water in rice-based systems. It stresses the continuing confusion over the concepts of irrigation efficiency and water productivity. It identifies the reasons for the wide gap between water requirement and actual water input (both irrigation diversions and rainfall) in irrigated rice production systems and discusses potential opportunities for increasing water productivity both on-farm and at the system level. Based on the reported low farm and system level irrigation efficiencies, the potentials for water savings in rice production appear to be very large. But we do not know the degree to which various farm and system interventions will lead to sustainable water savings in the water basin until we can quantify the downstream impact of the interventions. Studies on the economic benefits and costs, and environmental aspects of alternative interventions are also lacking. This paper emphasizes the need to measure the productivity of water at farm, system, and basin levels, and to understand how the productivity at one level relates to the productivity at another. Without water balance studies to measure productivity at these different scales, it is not possible to identify the potential economic benefits of alternative interventions and the most appropriate strategies for increasing irrigation water p
roductivity in rice-based systems.
 
Date 1998
2014-06-12T13:48:57Z
2014-06-12T13:48:57Z
 
Type Book
 
Identifier Guerra, L. C.; Bhuiyan, S. I.; Tuong, T. P.; Barker, R. 1998. Producing more rice with less water from irrigated systems. Colombo, Sri Lanka: International Water Management Institute (IWMI). v, 24p. (SWIM paper 5) doi: http://dx.doi.org/10.3910/2009.370
92-9090-369-4
1028-6705
https://hdl.handle.net/10568/36526
https://www.iwmi.cgiar.org/Publications/SWIM_Papers/PDFs/SWIM05.PDF
https://doi.org/10.3910/2009.370
 
Language en
 
Relation SWIM paper 5
 
Rights Open Access
 
Publisher International Water Management Institute