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How does irrigation cause salt to accumulate in the soil?

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Saltification or salinization in soil occurs when water in the water table is so full of mineral salts that plants cannot grow in soil that is irrigated by that water. read more

If salts accumulate in soil due to irrigation, then it’s because the salts are IN THE IRRIGATION water. Most of the irrigation water evaporates, or is taken up by the crop, with some penetrating deep into the soil in some cases. When the water evaporates, the salts are left behind. And when the crop takes up water, it leaves the salt behind as well. read more

Salt Problems in Irrigated Soils More than one-fourth of the irri- gated farmland in the United States does not penetrationproduce abundantly because the soil Saltis salt-affected. Salt-affected soil may contain too much salt, too much sodium, moreor both. An accumulation of gatedsalt in the soil may ilarretard plant growth. read more

rainfall and irrigation. This causes potentially very high salinisation rates. Watertables within two metres of the soil surface indicate the potential for salts to accumulate at the soil surface. Inefficient irrigation and drainage systems are a major cause of excess leakage and increase the risk of salinity and waterlogging in irrigation areas. read more

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Making the case for reusing saline water and restoring ...
Source: wle.cgiar.org

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