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Effects of Sewage Effluent Irrigation on Paddy

by S. Krishnamoorthi,
K. Shyamala,
P. Govindan,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

Paddy, the staple food of South India, occupies about an area of 38 million hectares in India [1, 1987]. Being a semi-aquatic plant, its water requirements are many times more than most of the other food crops, thus requiring careful water management. The commonly used irrigation method for paddy is the pondin system, in which the quantity of water used is greater and hence, water use efficiency is less. In order to increase the water use efficiency, it was contemplated to irrigate paddy based on the moisture content of the soil (non-ponding) thus overruling the need for continuous ponding system. A large volume of domestic sewage is generated from the campus and laboratories of Regional Engineering College, Tiruchirappalli, Tamil Nadu. This sewage is treated in an oxidation pond and the treated effluent is allowed to flow into a neighbouring village. In order to find a reuse for the treated effluent it was envisaged that treated effluent could be used for irrigating paddy.

Subject Headings: Irrigation | Effluents | Water conservation | Sewage | Developing countries | Water use | Water management | India | Asia

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