Coping with drought in irrigated South India: Farmers' adjustments in Nagarjuna Sagar
AbstractContinuous upstream water development in the South Indian Krishna Basin has resulted in declining water availability downstream. Upstream water use is not adjusted to reflect rainfall fluctuations, and downstream farmers of the Nagarjuna Sagar irrigation project in the state of Andhra Pradesh are increasingly vulnerable to water supply shocks. Understanding the adaptive capacity of irrigated command areas to fluctuating water conditions is critical. This paper documents the wide range of adjustments adopted by managers and farmers in Nagarjuna Sagar during a period of fluctuating water availability (2000-2007). Primary and secondary data indicate managerial adjustments such as rotational and timely water supplies to meet critical water demands of standing crops. Farmers responded to changing conditions through: (a) crop diversification, (b) shifting calendars, (c) conjunctive use, (d) suspending cultivation, (e) sale of livestock, (f) out-migration, and (g) tampering with the irrigation system. Adaptive strategies are more diverse in the tail-end than in the head-end of the canal network and local adjustments are often uncoordinated and may degrade the resource base. A better understanding of the practices induced by changes in water availability is needed to refine current water allocation and management in large surface irrigation projects. Crop diversification, deficit irrigation in low-flow years, and conjunctive use are some of the practices to be promoted in a conducive agricultural environment.
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Bibliographic InfoArticle provided by Elsevier in its journal Agricultural Water Management.
Volume (Year): 97 (2010)
Issue (Month): 10 (October)
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Web page: http://www.elsevier.com/locate/agwat
Water availability Large-scale irrigation Adaptability Water allocation;
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- Perry, C. J. & Narayanamurthy, S. G., 1998. "Farmer response to rationed and uncertain irrigation supplies," IWMI Books, Reports H022447, International Water Management Institute.
- Venot, Jean-Philippe & Turral, Hugh & Samad, Madar & Molle, Francois, 2007. "Shifting waterscapes: explaining basin closure in the Lower Krishna Basin, South India," IWMI Books, Reports H040963, International Water Management Institute.
- Perry, C. J. & Narayanamurthy, S. G., 1998. "Farmer response to rationed and uncertain irrigation supplies," IWMI Research Reports H022447, International Water Management Institute.
- Pereira, Luis Santos & Oweis, Theib & Zairi, Abdelaziz, 2002. "Irrigation management under water scarcity," Agricultural Water Management, Elsevier, vol. 57(3), pages 175-206, December.
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