Agricultural Land Drainage in India

Agricultural Land Drainage in India
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Agricultural Land Drainage in India

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Publisher: Agrotech Publications
ISBN: 9788183213349
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PREFACE Irrigated agriculture has played a key role in ensuring food security of the nation. In times to come, it would be able to take care of the national nutritional security as well. While it has been a matter of great satisfaction, lower than anticipated increase in production and productivity of canal irrigated lands has worried the scientific community and the planners. The environmental degradation brought in its wake especially the development of water logging and soil salinity has also caused major concerns. So much so that even the sustainability of irrigated agriculture is now being questioned at many forums. It is now known that environmental degradation often associated with irrigation is directly linked to inadequacy of land drainage in irrigation projects. Although several drainage technologies such as surface drainage, subsurface drainage, vertical drainage and bio-drainage are in vogue but find little application in irrigation commands. The issue becomes still more complex when a cost effective and efficient solution is sought through integration of surface and subsurface drainage technologies. According to a recent publication of the Indian National Academy of Engineering, India would need to invest about 4000 billion on subsurface drainage. If it has to happen in an effective way, besides government support, it should ensure participation of private entrepreneurs and the stakeholders. Drainage being knowledge based technology, appropriate literature highlighting various issues involved in investigations, design, construction and monitoring needs to be prepared and should be available easily. The literature has also to be clientele specific so that all the stakeholders have access to it on aspects that are most relevant to them. The current book addresses to a specific group of clientele that is the agricultural scientists, engineers, students of agriculture and engineering, the officers of the line departments NGOs and private entrepreneurs. The book contains 11 chapters written by experts. The first chapter is a state of the art on problems of water logging and soil salinity. The next five chapters address to all major technological issues related to surface and subsurface drainage to reclaim waterlogged salt affected lands. The next two chapters deal with case studies so that readers have glimpses of successful experiences under various agro-climatic conditions. These case studies clearly establish that the subsurface drainage technology is technically feasible, economically viable and socially acceptable. A chapter is included to describe location specific subsurface drainage technologies such as
vertical drainage and bio-drainage. To make the book a complete treatise on land drainage, a chapter is included on technologies for reuse and disposal of drainage effluents. The book ends with a chapter on socio-economic evaluation of drainage projects. All these chapters are updated versions of the lectures delivered by the authors in training programmes or papers published by them in reputed journals. All the chapters have been so arranged so as to provide a logical sequence to design and assemble effective surface and subsurface drainage systems.