Salinity effects on irrigated soil chemical and biological properties in the Aral Sea basin of Uzbekistan

Accelerated secondary salinization of irrigated soil is recognized as the major agricultural problem in Uzbekistan. The history of irrigation development in Central Asia has more than 2500 years in the deltas of the Amu Darya and SyrDarya. The Amu Darya basin in the south covers about 86.5% and the Syr Darya basin in the north about 13.5% of Uzbekistan.