Using gypsum is a common chemical amendment to reclaim alkali or sodic soils by facilitating the removal of excess sodium.
The solution of the problem of soil sanity and alkalinity is:
Asked in RPSC RAS Prelims 1996 · Topic: Environment and Sustainable Development (Deforestation, Desertification, and Land Degradation)
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Answer: B. Use of gypsum in the fields
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