Journal of FARM SCIENCES, Vol 30, No 1 (2017)

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Saline soil reclamation through subsurface drainage in Karnataka - An economic impact analysis

R. RAJU, K. THIMMAPPA, A. L. PATHAN, SIDDAYYA *

Abstract


Soil salinity is a major problem in canal command areas which affects the fertility of the land. The village UgarBudruk in Athani taluk of Belgaum district in Karnataka faced a major challenge of soil salinity and waterlogging since25-30 years. Approximately 70 per cent of cultivable area of the village was affected by soil salinity and the land which washighly productive once, was partially cultivated or left barren for many years. With the effort of progressive farmers of thevillage about 925 ha saline land has been reclaimed through installation of subsurface drainage technology. The per hectarecost of land reclamation was estimated to ` 52000. The post reclamation study implied that about 77 per cent of the landwas non-saline. The mean soil salinity was reduced from 6.6 to 2.52 dS/m during post-SSD showing 163 per cent reductionin soil salinity. The improved land productivity contributed to a significant increase in crop yield lead to increase in farmersincome to a maximum extent. The pre-SSD benefit-cost ratio of 0.56 and 0.51 were increased to 1.24 and 1.19 during post-SSD, respectively for planted and ratoon sugarcane production. The increase in benefit-cost ratio for planted and ratoonsugarcane production were about 120 and 134 per cent respectively. Though the installation of saline soil reclamationtechnology requires high cost, the effectiveness of the technology made the Karnataka farmers to install the technology ontheir own cost.

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