We know a major challenge to irrigated agriculture is the hazard of salt-affected soils and waters. Exhibit your viewpoint about overview of salinity.
Why do salt affected soils continue to pose potential threats to food ...
https://www.researchgate.net/.../Why_do_salt_affected_soils_continue_to_pose_poten...
Why do salt affected soils continue to pose potential threats to food security? Salt affected soils globally cover over 800 million ha (8-10% of of world land area), with a significant proportion of cultivated land is salt affected . Such soils are characterized by salinity and sodicity of various demensions , the origin of which can ...
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Well both Tarafdar and Srivastava have given very comprehensive and detailed information.
Please find attached link to over view.
https://googleweblight.com/i?u=https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/salt-affected-soils&hl=en-IN&geid=1023
PFA
https://www.researchgate.net/.../285164384_Salinity_Research_in_India_an_overview
www.tandfonline.com/doi/abs/10.../J144v07n01_09
https://www.researchgate.net/file.PostFileLoader.htm... for your information
Due to uncontrolled lifting of underground water, the cities situated near sea coast (like Karachi, Kolkata etc.) are getting salty underground water!
This is due to salt water intrusion from the sea.
Problems are increasing day by day.
We are so conversent with the salinity in arid and semiarid areas , and to a lesser extent salinity of humid areas. Literature is flooded with genesis and management of such salt affected soils. Lets have some discussion on genesis of salinity in cold deserts...
Dr. Srivastava, in the cold desert we have mainly sulphate, chloride, sodium and calcium salts. Salts containing chloride and sodium ions become less common away from the sea. Sulphate salts are more regularly distributed. Salts containing magnesium ion tend to exist mainly on substrates composed of basic igneous rocks, where as calcium and carbonate salts are present on all rock types in the cold desert areas.
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