Abstract
Salt-affected (saline) soils in Thailand cover an area of 2.302 million hectares of which management of inland saline soils are often problematic. Appropriate agronomic management is typically prescribed for slightly to moderately salt-affected lands used for rice cultivation. Application of green manure, specifically the leguminous Sesbania rostrata has been identified as having active potential in salt-affected soils for rainfed lowland rice systems. However, for severely salt-affected soils, rehabilitation is often necessitated, requiring high investment and changes in cropping pattern. Halophytes have a role in revegetation of such areas and contribute to environmental remediation. In addition, reforestation of the recharge uplands (the potential salt source area) can also lower the water table in some situations and reduce the discharge to lowland areas, offering an additional approach for salinity control.
