Premium
Calculating the cost of irrigation induced soil salinization in the tungabhadra project
Author(s) -
Janmaat John
Publication year - 2004
Publication title -
agricultural economics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.29
H-Index - 82
eISSN - 1574-0862
pISSN - 0169-5150
DOI - 10.1111/j.1574-0862.2004.tb00223.x
Subject(s) - soil salinity , irrigation , environmental science , soil retrogression and degradation , production (economics) , natural resource economics , range (aeronautics) , water resource management , soil water , distribution (mathematics) , economics , agricultural engineering , soil science , mathematics , microeconomics , ecology , engineering , mathematical analysis , biology , aerospace engineering
Irrigation projects in developing countries have a history of poor performance. Inefficiencies result as water applications deviate from plans and induce greater than projected rates of soil degradation through water logging and salt accumulation. Over time, the collective impact of these forces will converge to an equilibrium with a level of output that may be far below the system's potential. The Tungabhadra Project in south west India is experiencing all of these problems. Integrating geographic, hydrologic, biologic and economic features, the lost production value is estimated for a range of equilibria to which this system may converge. For the lower left bank main canal of the Tungabhadra project, the total economic cost of soil degradation are approximately 14.5% of the system's productive potential while sub‐optimal distribution losses may approach 37.1%