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Soil salinity. Soil salinity is the salt content in the soil; the process of increasing the salt content is known as salinization. Salts occur naturally within soils and water. Salination can be caused by natural processes such as mineral weathering or by the gradual withdrawal of an ocean. It can also come about through artificial processes such as irrigation
Analyze the salt content of well water before using it as an irrigation water source. It is also possible to induce a salinity problem through very heavy additions of soil amendments that have high salt content, e.g., manure, gypsum. Salts are a permanent constituent of soil. Once the salts have accumulated in a soil, there is no chemical treatment that will remove or counteract their adverse effects on plant growth. Special management practices become necessary in order to successfully grow plants on soils with high salt content.