Soil salinity control relates to controlling the problem of soil salinity and reclaiming salinized agricultural land.
The aim of soil salinity control is to prevent soil degradation by salinization and reclaim already salty (saline) soils. Soil reclamation is also called soil improvement, rehabilitation, remediation, recuperation, or amelioration.
The primary man-made cause of salinization is irrigation. River water or groundwater used in irrigation contains salts, which remain behind in the soil after the water has evaporated.
The primary method of controlling soil salinity is to permit 10-20% of the irrigation water to leach the soil, be drained and discharged through an appropriate drainage system. The salt concentration of the drainage water is normally 5 to 10 times higher than that of the irrigation water, thus salt export matches salt import and it will not accumulate.
Read more about Soil Salinity Control: The Soil Salinity Problem, Principles of Salinity Control, Drainage Systems, Soil Leaching, Strip Cropping: An Alternative, Soil Salinity Models, See Also
Famous quotes containing the words soil and/or control:
“But men labor under a mistake. The better part of the man is soon ploughed into the soil for compost. By a seeming fate, commonly called necessity, they are employed, as it says in an old book, laying up treasures which moth and rust will corrupt and thieves break through and steal. It is a fool’s life, as they will find when they get to the end of it, if not before.”
—Henry David Thoreau (1817–1862)
“Culture means control over nature.”
—Johan Huizinga (1872–1945)