Question

Gypsum, or calcium sulphate, is widely recommended for reclamation of certain problematic soils in India. For which type of soil is gypsum particularly useful?

A Acid soils with very low pH
B Sodic soils with high exchangeable sodium percentage
C Peaty soils with very high organic matter
D Lateritic soils with iron and aluminium oxides
E Saline soils with only soluble salts and no sodium issue
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