Agricultural Drainage Water as an Alternate Source for Irrigation Water
E. Parameswari*
Dept. of Environmental Sciences, Tamil Nadu Agricultural University, Tamil Nadu (641 003), India
V. Davamani
Dept. of Environmental Sciences, Tamil Nadu Agricultural University, Tamil Nadu (641 003), India
T. Ilakiya
Dept. of Vegetable Sciences, Tamil Nadu Agricultural University, Tamil Nadu (641 003), India
S. Paul Sebastian
Dept. of Environmental Sciences, Tamil Nadu Agricultural University, Tamil Nadu (641 003), India
P. Kalaiselvi
Dept. of Environmental Sciences, Tamil Nadu Agricultural University, Tamil Nadu (641 003), India
DOI: NIL
Keywords: Agricultural drainage water, Irrigation, Salinity, Salt tolerant crops
Abstract
Intensive irrigation practices dramatically enhanced the agricultural productivity. However, these practices have also resulted in enhanced drainage water production and the ground water chemical contamination. It is generally acknowledged that the long term agricultural production in the irrigated areas depends upon the adequate system of drainage outflow and various management strategies are being currently considered for reducing the drainage volume that ultimately requires treatment or disposal. Several ways are found to be effective however; none of these could be used alone for complete disposal of agricultural drainage water. The new concept of SBC (Sequential Biological Concentration) system integrates these concepts into a system that is capable of meeting the objective of drainage water disposal. The system is one of the successive uses of the drainage water for irrigation of progressively higher salt tolerant crops to concentrate the salt and reduce the total volume of water for disposal.
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Reference
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