Achieving sustainable irrigation requires effective management of salts, soil salinity, and shallow groundwater

Salinity and waterlogging have impacted agricultural production in arid areas for more than 2000 years. The causes of the problems are well known, as are the methods and investments required to manage salt-affected soils and shallow water tables. Yet the problems persist in many regions where farmers apply excessive irrigation water, and where farmers and irrigation departments fail to invest in adequate drainage solutions. Long ago, Professor …