Abstract
The total area of salt-affected soils in Thailand are 2.302 million hectares, of which the inland saline soils are 1.904 million hectares and the rest are in the coastal areas. Slightly to moderately salt-affected inlands are generally used for rice cultivation or other cash crops. Appropriate agronomic practices include selection of salt tolerant species, use of organic amendments and green manure. Management of severely salt-affected soils requires rehabilitation, leaching and drainage, mulching and change in cropping pattern. Halophytes have a role in revegetation and contribute to environmental remediation. In addition, reforestation on the recharge uplands has been recommended to lower groundwater hence, control salination in the discharge zone. Engineering and agronomic on-farm management practices for coastal salt-affected soils must be tailored to cope with the specific agro-ecosystem. More integrated research of various fields are needed.
