An Economic Evaluation of Water Productivity in Upper Krishna Project (UKP) and Malaprabha Ghataprabha Project (MGP) Command Areas in Karnataka
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Date
2016-06
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University of Agricultural Science, Dharwad
Abstract
Water resources around the world are threatened by scarcity, degradation and overuse, and food demands are projected to increase, it is important to improve our ability to produce more food with less water. The present study was taken up to evaluate the economic water productivity of selected crops in UKP and MGP command areas, Karnataka. The study made use of both primary and secondary data. Tabular analysis, Markov chain analysis and Garrett ranking were used to analyze the data. Net economic water productivities (NEWP) for sugarcane, cotton, maize and groundnut were computed as a ratio of net returns earned to the total water applied. In case of ALBC sugarcane had a productivity of Rs 6.00 per m3 in Head region while it was Rs 6.83 per m3 in Tail region. In case of IBC, productivity of sugarcane was Rs 5.72 per m3 in Head region while it was Rs. 7.50 per m3 in Tail region. In GRBC, sugarcane had a productivity of Rs.13.17 per m3 in head region and Rs.16.72 per m3 in tail region. Similarly in MLBC, cotton had a productivity of Rs.14.47 per m3 in Head region while it was Rs.18.6 per m3. Maize had a productivity of Rs. 32.64 per m3 in Head region while it was Rs. 36.3 per m3 in Tail region of MGP command areas. Groundnut had a productivity of Rs.52.85 per m3 and Rs.68.15 per m3, respectively in MGP command areas. It was observed that there was a huge disparity in the productivity levels at Head and Tail regions in canal command areas which was mainly due to unequal distribution of water and unscientific irrigation management practices.
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