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Home Books Agriculture Agronomy The Use of Saline Waters for Crop Production

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Blurb

The conclusion of the Expert Panel was that there is good potential for the safe use of saline-water for crop production. It recommended the integrated management of water of different qualities at the levels of the farm, irrigation system and drainage basin, with the explicit goals of increasing agricultural productivity, achieving optimal efficiency of water use, preventing on-site and off-site degradation and pollution and sustaining long-term production potential of land and water resources. In this publication the experts have drawn heavily on the papers presented in the Expert Consultation as well as on the recommendations that came out of the Consultation. It is hoped that this publication will provide guidelines to many developing as well as developed countries in order that they may manage their saline waters for productive purposes in a sustainable manner.

Introduction
Saline Waters as Resources
Quality Characteristics of Saline Waters
Definitions and indices of salinity related parameters
Classification of saline waters
Sources and Availability of Saline Waters
Examples of Use of Saline Waters for Irrigation
United States of America
Israel
Tunisia
India
Egypt
Water Quality Assessment
Concerns and Limitations
Effects of salts on soils
Effects of salts on plants
Effects of salts on crop quality
Criteria, Standards and Considerations in the Assessment of the Suitability of Saline Water for Irrigation and Crop Production
Criteria and standards for assessing suitability of saline water for irrigation
Considerations in assessing permeability and tilth hazards
Considerations in assessing salinity and toxicity hazards
Methods and Models for Assessing the Suitability of Saline Water for Irrigation and Crop Production
Use of the Watsuit computer model
Use of a non-computer version of Watsuit model
Use of a production-function model
Environmental and Ecological Aspects
Nature and Causes of Environmental Problems
Soil Degradation (Salinization and waterlogging)
Water pollution
Ecosystem disturbances
Water-borne diseases
Impects of Blending on Water Usability and Pollution
Management Principles and Practices for Safe Use of Saline Water
Management Guiding Principles
Management for Crop Production
Growing suitably tolerant crops
Managing seedbeds and grading fields to minimize localaccumulations of salinity
Managing soils under saline water irrigation
Operating delivery systems efficiently
Irrigating efficiently
Monitoring soil water and salinity and assessing adequacy of leaching and drainage
Management for Environmental Protection
Practices to control salinity in water resources
Integrated strategy to facilitate the use of saline waters for irrigation, to minimize drainage disposal problems and to miximize the beneficial use of multiple water sources
References